Does the amount of light affect the time that a banana spoils?|||the control is what stays the same; bananas
the independent variable is what you change; amount of light.
the dependent variable is what changes as a result of what the IV that you changed; the time it takes (or has taken) for the bananas to spoil.
if you're doing this for an science project, be sure to figure out a way to measure the amount of spoil on the bananas|||IV - amount of light
because that will change
DV - time
you're measuring time
Saturday, December 17, 2011
Control variable in biology ?
i've got a boilogy exam/test and there is a graph and underneath it says "Give 2 control variables that were used in this study"
WHAT IS A CONTROL VARIABLE? please !|||Controlled variables are quantities that a scientist wants to remain constant, and he must observe them as carefully as the dependent variables. For example, if we want to measure how much water flow increases when we open a faucet, it is important to make sure that the water pressure (the controlled variable) is held constant. That's because both the water pressure and the opening of a faucet have an impact on how much water flows. If we change both of them at the same time, we can't be sure how much of the change in water flow is because of the faucet opening and how much because of the water pressure. In other words, it would not be a fair test. Most experiments have more than one controlled variable. Some people refer to controlled variables as "constant variables."
WHAT IS A CONTROL VARIABLE? please !|||Controlled variables are quantities that a scientist wants to remain constant, and he must observe them as carefully as the dependent variables. For example, if we want to measure how much water flow increases when we open a faucet, it is important to make sure that the water pressure (the controlled variable) is held constant. That's because both the water pressure and the opening of a faucet have an impact on how much water flows. If we change both of them at the same time, we can't be sure how much of the change in water flow is because of the faucet opening and how much because of the water pressure. In other words, it would not be a fair test. Most experiments have more than one controlled variable. Some people refer to controlled variables as "constant variables."
Biology Homework Help: Why is it necessary to have more than one control variable?
it is more important to have more than one, to more accurately prove your hypothesis.|||for more consistency of the experiment and higher accuracy of the results as related to the subject|||To confirm the result is correct, the more control variables the better.|||To make sure that the experiment remains constant in different stages of the experiment.
Control variable in scientific experiment?
i'm doing a science project where we have to compare consumer products. i chose batteries. i've already done my experiment with three different companies and that turned out fine, but in my bar graphs and data, do i need to include a control variable? if so, would it just be no batteries at all? thank you|||This is what I would do:
1) Research on the Internet to find out which battery-producing company has been considered standard / popular / unchallenged / traditional / largest. This company / battery would be the control.
2) The other companies / batteries would be your dependent / independent variables.
Hope this helped.
1) Research on the Internet to find out which battery-producing company has been considered standard / popular / unchallenged / traditional / largest. This company / battery would be the control.
2) The other companies / batteries would be your dependent / independent variables.
Hope this helped.
Which is the dependent/independent variable? Which is the control/experimental group?
I am doing a lab on lifesavers, sugar ones versus sugar-free ones.
We dissolved each lifesaver in a heated beaker of water at 37 degrees celsius. We stirred the water with a stirring rod every fifteen seconds, switching direction each time.
What are the independent variables? Dependent variables?
What is the control group? Experimental group?
I wrote up the whole lab already if you need to see that, just message me. :) I want to make sure I get this right though before I turn it in. Thanks!|||Your independent variables are anything that you were able to control: ie the temperature, the type of lifesaver, the number of times you stirred. Your dependent variables will be the results of your experimentation, such as how dissolved each lifesaver was. You have no control group/experimental group in this situation because you don't know the outcome for either type of lifesaver before you perform the experiment.
We dissolved each lifesaver in a heated beaker of water at 37 degrees celsius. We stirred the water with a stirring rod every fifteen seconds, switching direction each time.
What are the independent variables? Dependent variables?
What is the control group? Experimental group?
I wrote up the whole lab already if you need to see that, just message me. :) I want to make sure I get this right though before I turn it in. Thanks!|||Your independent variables are anything that you were able to control: ie the temperature, the type of lifesaver, the number of times you stirred. Your dependent variables will be the results of your experimentation, such as how dissolved each lifesaver was. You have no control group/experimental group in this situation because you don't know the outcome for either type of lifesaver before you perform the experiment.
Control variable in hypothesis?
I'm wondering if the control variable/group are stated in the hypothesis. If so, then do you state it after the "then" in the "if..then %26amp; because" format?|||Nope, the format of the hypothesis is If...(what you are changing), then...(what your expected result is).|||The hypothesis has to do with forming a proposal to whatever question you are trying to answer. The control var. is not a requirement/has nothing to do with the hypothesis but is essential in the actual experiment.
example hypothesis: If you lower the water temp. slowly in a fish bowl, then the fish's respirations and body will slow down.
example hypothesis: If you lower the water temp. slowly in a fish bowl, then the fish's respirations and body will slow down.
What is the control group, independent, dependent variable, or constants? (look below)?
How do different rocks affect how the rock absorbs water? What is the control group, independent, dependent variable, or constants, for this experiment|||independent variable- different types of rocks
control rocks- a normal rock
dependent variable- how much water the rock absorbs
constants- how much water each rock gets, time the rock get the water, where the rock is placed etc.|||The control group is the basic rock. The independent variable is the different types of rocks. The constant is the amount of water you submerge them in and the size of the rocks.|||control would be the amount of water you use for each rock, dependent is the amount of water it absorbs, and independent is the types of rocks, i think.
control rocks- a normal rock
dependent variable- how much water the rock absorbs
constants- how much water each rock gets, time the rock get the water, where the rock is placed etc.|||The control group is the basic rock. The independent variable is the different types of rocks. The constant is the amount of water you submerge them in and the size of the rocks.|||control would be the amount of water you use for each rock, dependent is the amount of water it absorbs, and independent is the types of rocks, i think.
Can someone identify the independent variable, dependent variable, and control group of this experiment?
Rachel divides 100 people into two groups based upon their self-esteem scores from a previous psychological test. She administers a math test to the two groups and compares their scores.|||Independent variable is the self esteem score value of interest. Certain scores place people in the test group while other scores place them in the control group. The control are people who undergo the math test but do not have the self esteem quality being examined as impacting the test results. One is the test group one is the paired control group.
dependent variable are the resulting scores
dependent variable are the resulting scores
What is the dependent variable and control of this experiment?
i am testing between two pieces of chalk, one is brown and one is white, and the question is which one will last longer on a board.|||The independent variable is the type of chalk, the dependent variable can be either the total length of the line produced on the blackboard or the amount of time it takes to use up the chalk given equal usage. It depends upon how you set up your experiment.
Honestly I haven't a clue as to how one would set up a control for this.
Honestly I haven't a clue as to how one would set up a control for this.
What is the control, experimental variable, responding variable, experimental error, and a conclusion?
a randomly selected group of 1, 092 students were chosen taste a new and improved formulation of sour cream and onion potato chips. Each student ate 15ounces of potato chips. Of the 563 students that were given a new formulation of sour cream and onion potato chips, 89 developed cramps from gas. Of the 529 students that ate the old formulation of sour cream and onion potato chips, 111 developed cramps?|||a randomly selected group of 1, 092 students were chosen
taste a new and improved formulation of sour cream and onion potato chips.
Each student ate 15ounces of potato chips.----control
Of the 563 students that were given a new formulation of sour cream and onion potato chips--experimental variable
89 developed cramps from gas. responding variable
Of the 529 students that ate the old formulation of sour cream and onion potato chips---control
111 developed cramps---responding variable
taste a new and improved formulation of sour cream and onion potato chips.
Each student ate 15ounces of potato chips.----control
Of the 563 students that were given a new formulation of sour cream and onion potato chips--experimental variable
89 developed cramps from gas. responding variable
Of the 529 students that ate the old formulation of sour cream and onion potato chips---control
111 developed cramps---responding variable
Control and constant variable for a science project?
My problem statement is how accurate are eyewitnesses testimonies?
I basically played out three scenarios and gave them a test on what they remember
my independent variable- The three scenarios
Dependent- How accurate their observations were.
what the he!! are my control and constant?
|||It sounds cool but the problem you are having is because it wasn't really an experiment. There was no hypothesis. It was just an observation.
To make an experiment out of it, you have to have two or more groups observing different things, the characteristics of which, you control. You can be testing anything, but whatever the factor you are testing, that will be your dependent variable. The conditions you set would be the independent variables. I'll give you an example.
Let's say you're testing the accuracy of a person's responses on the basis of stress. You have two scenarios; one which is pleasant and non-stressful and one which is frightening or disturbing. Then you ask two groups of observers the same kinds of questions about each. This can be tricky to set up because of the number of factors you might overlook. But at least now it is an experiment. The control, or independent variable would be stress. Notice, in your present observation, you have no such variable that you are testing.
So you would look at the scores. The more participants, the better. If you tested 20 people and they scored on average, 30% better on the pleasant observation test, then you might have demonstrated a clear relationship.
I mention this example because this very experiment has been clinically conducted many times and it has been shown that there is a clear correlation between the stress level of the observer and the inaccuracy of their answers to questions about it. This has become a precedent in many court cases.
Good luck and have fun. A warning about ethics: do not make your stressful scenario too disturbing. Have it just be an argument or something: no fake gore or anything like that, (even though bloodshed is a SURE FIRE way to blow people's memories all to hell. Don't do it.)
Edit: another thing. Your subjects should not know or even suspect what your experiment is really about. If they know, then the experiment becomes invalid because that would have been a necessary control.
E-mail me if you would like to impress you teacher by double-blinding your experiment. I'll tell you how to do it. That's an important control, too.
I basically played out three scenarios and gave them a test on what they remember
my independent variable- The three scenarios
Dependent- How accurate their observations were.
what the he!! are my control and constant?
|||It sounds cool but the problem you are having is because it wasn't really an experiment. There was no hypothesis. It was just an observation.
To make an experiment out of it, you have to have two or more groups observing different things, the characteristics of which, you control. You can be testing anything, but whatever the factor you are testing, that will be your dependent variable. The conditions you set would be the independent variables. I'll give you an example.
Let's say you're testing the accuracy of a person's responses on the basis of stress. You have two scenarios; one which is pleasant and non-stressful and one which is frightening or disturbing. Then you ask two groups of observers the same kinds of questions about each. This can be tricky to set up because of the number of factors you might overlook. But at least now it is an experiment. The control, or independent variable would be stress. Notice, in your present observation, you have no such variable that you are testing.
So you would look at the scores. The more participants, the better. If you tested 20 people and they scored on average, 30% better on the pleasant observation test, then you might have demonstrated a clear relationship.
I mention this example because this very experiment has been clinically conducted many times and it has been shown that there is a clear correlation between the stress level of the observer and the inaccuracy of their answers to questions about it. This has become a precedent in many court cases.
Good luck and have fun. A warning about ethics: do not make your stressful scenario too disturbing. Have it just be an argument or something: no fake gore or anything like that, (even though bloodshed is a SURE FIRE way to blow people's memories all to hell. Don't do it.)
Edit: another thing. Your subjects should not know or even suspect what your experiment is really about. If they know, then the experiment becomes invalid because that would have been a necessary control.
E-mail me if you would like to impress you teacher by double-blinding your experiment. I'll tell you how to do it. That's an important control, too.
What is the difference between an independant variable, dependant variable and control?
You are asking about a closed-loop control system, for those terms to be applicable.
The independent variable is the input to the control system, basically, a setpoint change, or a load change, aka, disturbance.
The dependent variable is any output of the control system, i.e. flow, temperature, pressure, level, etc.
The control variable is the dependent variable right after the controller, into the control element, ie, flow control valve, heater, etc.|||indpent varible: this one is x: the varible you can change (ie: amount of sunlight)
depent varible: this one is y: the varbile you can't change (ie: time)
control, aka constent: stays the same throught out the expirment
example: say you want to seee if different colour light a/effects the way ablino corn grows.
control: corn
d. v.: time it takes to grow
i. v.: colour light
*you compare the iv to the constant!*
*you can't change the dv by laws of science*
HOPE THIS HELPED!|||The independent variable is the one you are changing. The dependent variable is the one that you don't change.
For example, you are testing the growth of a plant based on the amount of water.
The dependent variable would be the growth (you're not physically changing it) and the amount of water would be the independent variable (you are going to put a different amount of water in each pot).
A way to remember it is: DRY MIX. (dependent, responding, y), (manipulative, independent, x)
The control is one that is neutral to ensure that there are no hidden variables.|||ok, I know nothing about control but I do know about Independant and dependant variable.
Dependant Variable.
when two variables are dependant, it means that the change of one affects the other.
The variables affect each other. The variables are related to each other.
what happens to one variable depends on the other and vice versa
Independant variables.
variables are Not related to each other.
It doesn't matter what happens to one variable because it will not affect the other variable.|||Independent is always on the X axis
Dependant is always on the Y axis
The dependent changes due to the independent, so when the independent is altered the dependant changes
Control is like if you have a graph that shows like you had 10 plants and each plant u gave a certain amount of water and you wrote down how much each grew, the control group would be the plant that didnt get any water.|||independant variable- (normally x) does not depend on the other variable
dependant variable- (normally y) is the way it is b/c of the other variable
control- no idea
The independent variable is the input to the control system, basically, a setpoint change, or a load change, aka, disturbance.
The dependent variable is any output of the control system, i.e. flow, temperature, pressure, level, etc.
The control variable is the dependent variable right after the controller, into the control element, ie, flow control valve, heater, etc.|||indpent varible: this one is x: the varible you can change (ie: amount of sunlight)
depent varible: this one is y: the varbile you can't change (ie: time)
control, aka constent: stays the same throught out the expirment
example: say you want to seee if different colour light a/effects the way ablino corn grows.
control: corn
d. v.: time it takes to grow
i. v.: colour light
*you compare the iv to the constant!*
*you can't change the dv by laws of science*
HOPE THIS HELPED!|||The independent variable is the one you are changing. The dependent variable is the one that you don't change.
For example, you are testing the growth of a plant based on the amount of water.
The dependent variable would be the growth (you're not physically changing it) and the amount of water would be the independent variable (you are going to put a different amount of water in each pot).
A way to remember it is: DRY MIX. (dependent, responding, y), (manipulative, independent, x)
The control is one that is neutral to ensure that there are no hidden variables.|||ok, I know nothing about control but I do know about Independant and dependant variable.
Dependant Variable.
when two variables are dependant, it means that the change of one affects the other.
The variables affect each other. The variables are related to each other.
what happens to one variable depends on the other and vice versa
Independant variables.
variables are Not related to each other.
It doesn't matter what happens to one variable because it will not affect the other variable.|||Independent is always on the X axis
Dependant is always on the Y axis
The dependent changes due to the independent, so when the independent is altered the dependant changes
Control is like if you have a graph that shows like you had 10 plants and each plant u gave a certain amount of water and you wrote down how much each grew, the control group would be the plant that didnt get any water.|||independant variable- (normally x) does not depend on the other variable
dependant variable- (normally y) is the way it is b/c of the other variable
control- no idea
Whats a variable and a control?
am doing this science project where i planted marigolds and then put different types of water.whats the variable and the control?|||a control stays the same
and a variable you do something different too
ex- the control gets regular water and the variable gets water w. sugar or water w. miracle grow.
and a variable you do something different too
ex- the control gets regular water and the variable gets water w. sugar or water w. miracle grow.
Science Experiments that involve variable and control?!?!?
I need a science experiment for highschool students that involves a variable and control. I need to write a method paper on it so I want something creative. I searched everywhere and I just can't find anything! Please help! Thanks.|||Hi,
My daughter had to do one like this, and since it is Spring, she did plant seeds.
She planted bean plants in several cups. The variables were (1) amount of water, (2) amount of fertilizer, (3) amount of light. Then she measured the growth of the plants over time, carefully controlling different variables in each cup.
Just a thought. :-) Good luck!|||These sites have or point to lots of science fair project ideas:
http://www.sciencebuddies.org/
http://www.all-science-fair-projects.com鈥?/a>
http://www.ipl.org/div/projectguide/
http://school.discoveryeducation.com/sci鈥?/a>
http://www.picadome.fcps.net/lab/sci_fai鈥?/a>
http://www.scienceproject.com/
http://www.energyquest.ca.gov/projects/i鈥?/a>
http://www.freesciencefairproject.com/
http://www.hometrainingtools.com/article鈥?/a>
http://www.usc.edu/CSSF/Resources/Gettin鈥?/a>
My daughter had to do one like this, and since it is Spring, she did plant seeds.
She planted bean plants in several cups. The variables were (1) amount of water, (2) amount of fertilizer, (3) amount of light. Then she measured the growth of the plants over time, carefully controlling different variables in each cup.
Just a thought. :-) Good luck!|||These sites have or point to lots of science fair project ideas:
http://www.sciencebuddies.org/
http://www.all-science-fair-projects.com鈥?/a>
http://www.ipl.org/div/projectguide/
http://school.discoveryeducation.com/sci鈥?/a>
http://www.picadome.fcps.net/lab/sci_fai鈥?/a>
http://www.scienceproject.com/
http://www.energyquest.ca.gov/projects/i鈥?/a>
http://www.freesciencefairproject.com/
http://www.hometrainingtools.com/article鈥?/a>
http://www.usc.edu/CSSF/Resources/Gettin鈥?/a>
Identify the manipulated variable and the responding varible. list the other vairbles you would control.?
you are planning an experiment to find out whether the rate at which water freezes depends on the shape of its container. identify the manipulated variable and the responding varible. list the other vairbles you would control.|||manipulated variable is the shape of the container.
the response is freezing time.
the other variables that should be controlled is the type of water, (tap, bottled, distilled,...), temperature and pressure.
the response is freezing time.
the other variables that should be controlled is the type of water, (tap, bottled, distilled,...), temperature and pressure.
What does the control variable mean in a graph?
plzz give examples and tell me what it means!
fankss :)|||The control variable is also known as the independent variable. This is the variable that you change in order to produce a result. The independent variable is graphed on the x axis of the graph.
The dependent variable, also known as the reaction variable, is the reaction to a change in the control variable. The dependent variable depends on the independent variable, which is independent of anything... get it? The dependent variable is always graphed on the y axis.|||The variable which stays the same..
it is used to compare results to
so.. lets say you were testing drugs on animals..
if we had the exact same monkey for each test.. this would be the control variable, because it stays the same throughout the test
fankss :)|||The control variable is also known as the independent variable. This is the variable that you change in order to produce a result. The independent variable is graphed on the x axis of the graph.
The dependent variable, also known as the reaction variable, is the reaction to a change in the control variable. The dependent variable depends on the independent variable, which is independent of anything... get it? The dependent variable is always graphed on the y axis.|||The variable which stays the same..
it is used to compare results to
so.. lets say you were testing drugs on animals..
if we had the exact same monkey for each test.. this would be the control variable, because it stays the same throughout the test
What is the independent and dependent variable for my project, also the control group?
i'm doing a science project...... which flavor of haagen daz ice-cream melts the fastest, vanilla, chocolate, or strawberry?
independent variable=
dependent variable=
control group=|||independent variable = temperature of room or air.
dependent variable = ice cream brand.
control group = get a diffrent brand.|||You're trying to measure melting times, so the dependent variable is melting time. That's because melting time *depends* upon the flavor of the ice cream.
Next, the independent variable is the flavor of ice cream. This is because the flavor of ice cream doesn't *depend* on anything as it's just chosen to be observed.
Finally the control group isn't obvious. You need to pick one of the flavors to use as a control. I'd suggest using vanilla because it's usually considered a "plain" flavor.
For your science project, I'd recommend taking several different samples of your ice cream.
I'd do 10 samples of 1 ounce of each flavor. This would be a total of 30 samples. Then record how long it takes for each 1 ounce sample of each flavor to melt.
Then I'd do 10 samples of 2 ounces of each flavor. This is another total of 30 samples.
This adds up to a somewhat large quantity of ice cream, but you can compare and contrast the different flavors. You can write about whether a 2 ounce sample melts faster than a 1 ounce sample or at the same rate.
You should try to predict what will happen before hand.
Also, try to keep the shape of the samples the same. Differing amounts of surface area will cause the ice cream to melt at different rates. You may want to write about this as well.|||independent variables- type of ice cream, because it's different for each, but you control it
dependent variable- amount melted, because you have no direct control over it.
control- time to melt, because you control it and it stays the same for all of them, controling it.|||independent variable = type of ice cream
dependent variable = time to melt
control group = ground ice?|||independent: Flavor of ice cream
dependent: Melting time
There would be no control group|||independent=temperature, flavor
dependent=how much it melts in the given time
control=idk
independent variable=
dependent variable=
control group=|||independent variable = temperature of room or air.
dependent variable = ice cream brand.
control group = get a diffrent brand.|||You're trying to measure melting times, so the dependent variable is melting time. That's because melting time *depends* upon the flavor of the ice cream.
Next, the independent variable is the flavor of ice cream. This is because the flavor of ice cream doesn't *depend* on anything as it's just chosen to be observed.
Finally the control group isn't obvious. You need to pick one of the flavors to use as a control. I'd suggest using vanilla because it's usually considered a "plain" flavor.
For your science project, I'd recommend taking several different samples of your ice cream.
I'd do 10 samples of 1 ounce of each flavor. This would be a total of 30 samples. Then record how long it takes for each 1 ounce sample of each flavor to melt.
Then I'd do 10 samples of 2 ounces of each flavor. This is another total of 30 samples.
This adds up to a somewhat large quantity of ice cream, but you can compare and contrast the different flavors. You can write about whether a 2 ounce sample melts faster than a 1 ounce sample or at the same rate.
You should try to predict what will happen before hand.
Also, try to keep the shape of the samples the same. Differing amounts of surface area will cause the ice cream to melt at different rates. You may want to write about this as well.|||independent variables- type of ice cream, because it's different for each, but you control it
dependent variable- amount melted, because you have no direct control over it.
control- time to melt, because you control it and it stays the same for all of them, controling it.|||independent variable = type of ice cream
dependent variable = time to melt
control group = ground ice?|||independent: Flavor of ice cream
dependent: Melting time
There would be no control group|||independent=temperature, flavor
dependent=how much it melts in the given time
control=idk
What is the independent variable, dependent variable and control?
can ice melt faster with hot water or cold water?|||The independent variable is something that isn't dependent on another variable, such as time.
The dependent variable is something that depends on the other, so say in a distance vs. time graph, the dependent variable is the distance while the independent is time.
The controlled variables are the ones you control, such as the speed of the object that's moving, whether it stays the same speed or accelerates/deaccelerates.
Hope this helped.
=]|||The independent variable would be what is not changing throught the experiment, your hot and cold water. The dependent variable would be what is changing, you are trying to melt your ice, so it is the dependent variable. Your control would be how fast your ice is melting without changing anything with the water.
I hope this helps. :o)|||the independent is the thing that gets changed (temp of water)
the dependent is the result (speed of melting)
control is the ice (amount, etc)|||Lori has the variables right but the control would be the experimental procedure that is not treated. You could do this experiment without a control or you could have a block of ice that is not exposed to water at all as your control.|||The I.V. is the H2O temp.
The D.V. is the time it takes the ice to melt.
Two examples of a Control Variable are:
- testing the time it takes ice to melt WITHOUT water
-testing the time it takes the ice to melt with LUKE-WARM water.
'Control' (verb) ensures that each process of the experiment is performed exactly the same and can be replicated:
the same ice type is used,
the original temp. of the ice is the same
the amount of ice %26amp; water are the same,
the containers are the same size and made of the same material, etc.
D
R
Y
M I X
This is a neat way to remember variables, their meaning, and their position on a graph. A teacher showed me this. I am not sure of the origin.
D=Dependent or 'Depends on other factors'
R=Responding variable (This can also stand for result or effect*).
Y=Always plotted on the Y-axis (This is the vertical / up and down axis just like the letter 'Y' reaches up).
M=Manipulated variable (This word means 'man' purposely set up this variable).
I=Independent variable is the CAUSE* (this variable is set up to determine its effect* on the Dependendent variable/the ways things turn out).
X=Always plotted on the X-axis (this axis, like the letter 'x' goes across and is the horizontal axis).
Every Hypothesis statement must have an I.V. and a D.V. (Note: Not every hypothesis statement will be proven correct but that doesn't matter. The more causes you eliminate the closer you get to the solution).
I.V. D.V.
Ex. The more concentrated the light source - the higher the temperature of the object beneath.
The 'concentration of light' is the cause, manipulated, or I.V.
'How high the object's temperature rises' is the effect, result or D.V.
(Note: The I.V. doesn't always come first).
Ex.
D.V. I.V.
The more bountiful and beautiful Gardenia blossoms - the healthier the bushes' leaves are.
[Gardenia blossoms are affected(effect / D.V.) by the leaves. If the leaves have Aphids or any other disease(cause / I.V.), the blooms are scarce and limp. Aphids are common on Gardinias].
The dependent variable is something that depends on the other, so say in a distance vs. time graph, the dependent variable is the distance while the independent is time.
The controlled variables are the ones you control, such as the speed of the object that's moving, whether it stays the same speed or accelerates/deaccelerates.
Hope this helped.
=]|||The independent variable would be what is not changing throught the experiment, your hot and cold water. The dependent variable would be what is changing, you are trying to melt your ice, so it is the dependent variable. Your control would be how fast your ice is melting without changing anything with the water.
I hope this helps. :o)|||the independent is the thing that gets changed (temp of water)
the dependent is the result (speed of melting)
control is the ice (amount, etc)|||Lori has the variables right but the control would be the experimental procedure that is not treated. You could do this experiment without a control or you could have a block of ice that is not exposed to water at all as your control.|||The I.V. is the H2O temp.
The D.V. is the time it takes the ice to melt.
Two examples of a Control Variable are:
- testing the time it takes ice to melt WITHOUT water
-testing the time it takes the ice to melt with LUKE-WARM water.
'Control' (verb) ensures that each process of the experiment is performed exactly the same and can be replicated:
the same ice type is used,
the original temp. of the ice is the same
the amount of ice %26amp; water are the same,
the containers are the same size and made of the same material, etc.
D
R
Y
M I X
This is a neat way to remember variables, their meaning, and their position on a graph. A teacher showed me this. I am not sure of the origin.
D=Dependent or 'Depends on other factors'
R=Responding variable (This can also stand for result or effect*).
Y=Always plotted on the Y-axis (This is the vertical / up and down axis just like the letter 'Y' reaches up).
M=Manipulated variable (This word means 'man' purposely set up this variable).
I=Independent variable is the CAUSE* (this variable is set up to determine its effect* on the Dependendent variable/the ways things turn out).
X=Always plotted on the X-axis (this axis, like the letter 'x' goes across and is the horizontal axis).
Every Hypothesis statement must have an I.V. and a D.V. (Note: Not every hypothesis statement will be proven correct but that doesn't matter. The more causes you eliminate the closer you get to the solution).
I.V. D.V.
Ex. The more concentrated the light source - the higher the temperature of the object beneath.
The 'concentration of light' is the cause, manipulated, or I.V.
'How high the object's temperature rises' is the effect, result or D.V.
(Note: The I.V. doesn't always come first).
Ex.
D.V. I.V.
The more bountiful and beautiful Gardenia blossoms - the healthier the bushes' leaves are.
[Gardenia blossoms are affected(effect / D.V.) by the leaves. If the leaves have Aphids or any other disease(cause / I.V.), the blooms are scarce and limp. Aphids are common on Gardinias].
Independent variable, dependent variable, and control in my experiment?
I am doing a project were my question is " how does the shape of a paper airplane affect its flight? "
I have two airplanes, one a classic 'dart' and the other a 'glider', both I am studying how far they go and how long they stay in the air. But, I am completely confused on how to label the independent, dependent, and control in my experiment.|||the independent variable is what you are changing on purpose to see the result of something. you are changing the design of the plane, so the design would be the independent variable.
the dependent variable is what will be changed due to the independent variable changing. the dependent variable is the time and speed.
controlled variables are part of the experiment that is supposed to help keep the results accurate. you want the wind, material of plane, gravity, and force to remain the same.there are the controlled variables.
good luck on your project! :D|||Your independent variable is the paper airplane shape because that is what you are changing.
Your dependent variable is how far they go and how long they stay in the air because that is what changes when the independent variable is changed.
Your control would be what your comparing your results to.
I have two airplanes, one a classic 'dart' and the other a 'glider', both I am studying how far they go and how long they stay in the air. But, I am completely confused on how to label the independent, dependent, and control in my experiment.|||the independent variable is what you are changing on purpose to see the result of something. you are changing the design of the plane, so the design would be the independent variable.
the dependent variable is what will be changed due to the independent variable changing. the dependent variable is the time and speed.
controlled variables are part of the experiment that is supposed to help keep the results accurate. you want the wind, material of plane, gravity, and force to remain the same.there are the controlled variables.
good luck on your project! :D|||Your independent variable is the paper airplane shape because that is what you are changing.
Your dependent variable is how far they go and how long they stay in the air because that is what changes when the independent variable is changed.
Your control would be what your comparing your results to.
Why is a control variable of importance?
I need help for my quiz tomorrow! Thank you!!!!!! :)|||In some experiments, you need a control group to establish a baseline for performance and minimize the effect of confounding variables.
For example, someone wants to test a new drug treatment for cancer. They get a sample of patients with cancer, test tumor size, and divide them (randomly) into two groups. They give one group the new drug and the second group a placebo. Two months later they test tumor size again and find that the tumors in the treatment group have stayed the same size. Without a control group, they would probably assume that the treatment was ineffective and scrap the drug. However, checking the control group, they find that their tumors have tripled in size without treatment. Lo and behold, the drug has an effect after all!|||Because if you didn't have a control, then you would never know how the reaction would occur normally.
For example, someone wants to test a new drug treatment for cancer. They get a sample of patients with cancer, test tumor size, and divide them (randomly) into two groups. They give one group the new drug and the second group a placebo. Two months later they test tumor size again and find that the tumors in the treatment group have stayed the same size. Without a control group, they would probably assume that the treatment was ineffective and scrap the drug. However, checking the control group, they find that their tumors have tripled in size without treatment. Lo and behold, the drug has an effect after all!|||Because if you didn't have a control, then you would never know how the reaction would occur normally.
What is the control, experimental variable, and responding variable?
A randomly selected group of 1,092 students were chosen to taste a new and improved formulation of sour cream and onion potato chips. Each student ate 15 ounces of potato chips. Of the 563 students that were given a new formulation of sour cream and onion potato chips, 89 developed cramps from gas. Of the 529 students that ate the old formulation of sour cream and onion potato chips, 111 developed cramps?|||control: none described. need some students who do everything but eat chips.
experimental variable: new or old formula
responding variable: cramps or not
鈾ｂ櫐
experimental variable: new or old formula
responding variable: cramps or not
鈾ｂ櫐
Why do i need to control the volume variable in my science investigation? See details.?
In my science investigation, I was to investigate how the concentration of hydrochloric acid affects the rate of reaction with calcium carbonate. Why do I need to control the amount of volume of the solution? Help asap, explain in detail why? Thankyou.|||because the amount of volume could change how the chemicals react. each test needs to have the same volume so that the volume does not affect the results and your only testing the variable you want to test.
Why do i need to control the volume variable in my science investigation? See details.?
In my science investigation, I was to investigate how the concentration of hydrochloric acid affects the rate of reaction with calcium carbonate. Why do I need to control the amount of volume of the solution? Help asap, explain in detail why? Thankyou.|||ok
Why is it important to have only one control variable on a scientific experiment? * 10 POINTS.?
Help. science.
homework. :l|||You can actually have one variable because other would just not fit in anywhere!
homework. :l|||You can actually have one variable because other would just not fit in anywhere!
How do you control an Silicon controlled rectifier with a potentiometer in a variable high amperage circuit?
Hi! I'm trying to build a constant voltage variable high amperage circuit. I know that you can use a silicon controlled rectifier in inverse parallel to conduct the full waveform in AC. How can you use a potentiometer send the signal to the SCR without blowing up the small potentiometers available (circuit will be up to 200 amps.) Thanks to anybody who can shed some light on this!|||One approach is to use pulse transformers to transmit the gate pulses from the triggering circuit to the SCRs. Another approach is to build a separate transformer-isolated power supply for each gate driver circuit and use optical couplers to transmit signals to the gate drivers. A third approach would be to use light-triggered SCRs, but I don鈥檛 know about the availability of those devices. With any approach, you could reduce the complexity by using triacs instead of SCRs.
What is my Control, Depented Variable,Independent variable,and constants?
My problem statement is : how does the diffrent types of tunning forks affect the vibration the styrofom makes?
The Materials is :
-Ring Stand w/ String tied to styrofom
-Tunning Forks
-Mallet / Large Cork Topper
-Block of Wood (3)
-Bowl Of Water
-Sponge
-Book|||You will need to be more specific. All you did was listed the materials. What did you do with the materials?
Also, tuning forks don't have a "type". Tuning forks have a frequency.
The Materials is :
-Ring Stand w/ String tied to styrofom
-Tunning Forks
-Mallet / Large Cork Topper
-Block of Wood (3)
-Bowl Of Water
-Sponge
-Book|||You will need to be more specific. All you did was listed the materials. What did you do with the materials?
Also, tuning forks don't have a "type". Tuning forks have a frequency.
What does control variable and manipulated varible mean?
also, what does observation and conclusion? (you dont have to answer this)|||A control variable stays constant, it does not change. A manipulated variable can be changed or adjusted by the person doing the experiment. An observation is a change recordable and provable. It has to be fact-based, not just a judgement. Conclusion is the result of your testing and observations, or "What I learned..."
Good luck!|||They mean you should pay attention during class!
Control stays the same
Manipulated is changed by the observer
Difference between control and manipulated is called Response variable.
(the result of the interference)
Observation is what the experimenter saw (in minute detail)
Conclusion is what the experiment proved.|||The control variable is the one that is not given some experimental condition, the manipulated one is the variable in an experiment that is given some condition or test to see if their is a response to the experiment that is different from the controls.
Good luck!|||They mean you should pay attention during class!
Control stays the same
Manipulated is changed by the observer
Difference between control and manipulated is called Response variable.
(the result of the interference)
Observation is what the experimenter saw (in minute detail)
Conclusion is what the experiment proved.|||The control variable is the one that is not given some experimental condition, the manipulated one is the variable in an experiment that is given some condition or test to see if their is a response to the experiment that is different from the controls.
What is the control group, independent variable, and dependent variable in this problem?
Smithers thinks that a special juice will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task(in this case, they're supposed to staple a set of papers.) Group A is given the special juice to drink while they work. Group B is not given the special juice. After an hour, Smithers counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks.|||Control Group:
Group B, which has no juice.
Independent Variable:
Groups A and B
Dependent Variable:
The number of stacks of paper
Group B, which has no juice.
Independent Variable:
Groups A and B
Dependent Variable:
The number of stacks of paper
What is an control variable and give examples.?
Experimental design and data analysis
In the design of experiments and data analysis, control variables are those variables that are not changed throughout the trials in an experiment because the experimenter is not interested in the effect of that variable being changed for that particular experiment. (In other words, control variables are extraneous factors, possibly affecting the experiment, that are kept constant so as to minimize their effects on the outcome.) An example of a control variable in an experiment might be keeping the pressure constant in an experiment designed to test the effects of temperature on bacterial growth.
In a scientific experiment, the controlled variable never changes; it is the same for every setup. For example, in an evaporation experiment, the area must be the same.
Control theory
In control theory, control variables are variables that are input to the control system.
Programming
In programming, a control variable is a program variable that is used to regulate the flow of control of the program. For example, a loop control variable is used to regulate the number of times the body of a program loop is executed; it is incremented (or decremented when counting down) each time the loop body is executed.|||Hi. When you design an experiment a control variable is one or more in which you have no interest in changing. Like coolant on or off in a machining process. http://en.wikipedia.org/wiki/Control_var鈥?/a>
In the design of experiments and data analysis, control variables are those variables that are not changed throughout the trials in an experiment because the experimenter is not interested in the effect of that variable being changed for that particular experiment. (In other words, control variables are extraneous factors, possibly affecting the experiment, that are kept constant so as to minimize their effects on the outcome.) An example of a control variable in an experiment might be keeping the pressure constant in an experiment designed to test the effects of temperature on bacterial growth.
In a scientific experiment, the controlled variable never changes; it is the same for every setup. For example, in an evaporation experiment, the area must be the same.
Control theory
In control theory, control variables are variables that are input to the control system.
Programming
In programming, a control variable is a program variable that is used to regulate the flow of control of the program. For example, a loop control variable is used to regulate the number of times the body of a program loop is executed; it is incremented (or decremented when counting down) each time the loop body is executed.|||Hi. When you design an experiment a control variable is one or more in which you have no interest in changing. Like coolant on or off in a machining process. http://en.wikipedia.org/wiki/Control_var鈥?/a>
In an experiment that has a control and experimental group, the dependent variable is:?
a. observed in the experimental group.
b. not observed in the control group.
c. the result of the independent variable.
d. All of these statements are true.|||the dependent variable is the one you're measuring and the independent variable is the one you're manipulating
eg rate of photosynthesis (dependent) and different light intensities (independent)|||d.
the dependent variable depends on the independent variable
(the independent variable affects / causes a change in the dependent variable)
you control the independent variables.
the dependent variables are the effects you are looking for in your experimental group.
b. not observed in the control group.
c. the result of the independent variable.
d. All of these statements are true.|||the dependent variable is the one you're measuring and the independent variable is the one you're manipulating
eg rate of photosynthesis (dependent) and different light intensities (independent)|||d.
the dependent variable depends on the independent variable
(the independent variable affects / causes a change in the dependent variable)
you control the independent variables.
the dependent variables are the effects you are looking for in your experimental group.
What is my control variable?
My experiment is the effect of fabric softener on drying time.
I will be adding fabric softener to the dryer cycle of clothes and time it to see if fabric softener effects the drying time.
My idependent variable is fabric softener.
My dependent variable is drying time.
But, I dont know what my control variable is!|||Your control variable is what you put in the dryer. Each dryer load, whether with or without softener, must be pretty much the same in material, volume and dampness.
I will be adding fabric softener to the dryer cycle of clothes and time it to see if fabric softener effects the drying time.
My idependent variable is fabric softener.
My dependent variable is drying time.
But, I dont know what my control variable is!|||Your control variable is what you put in the dryer. Each dryer load, whether with or without softener, must be pretty much the same in material, volume and dampness.
I dont get the difference between a control and experimental variable?
and i dont get the difference between a independent and dependent variable, i have a test tomorrow and i still dont get the difference|||hey! So I got your question on my question about dislocating your knee. (lol sorry this is the only place I could put the answer) Definately go for the surgery! I'm fully capable of walking again and everythings fine now. I still have to be careful ad wear my braces when doing physical activity. I have no limp or lasting effects! Thanks for answering my question!|||A control is how something would be found in it's normal state, such as bread on the counter. An experimental variable is what you change to the normal state when doing an experiment.|||the control one is held constant it never changes this is the dependent variable, say you have a certain number of people in your experiment, the number of these people will not change. The independent variables do however change and you could have any number of these.|||The control is the variable that NEVER changes.
The experimental variable is what makes or does change.|||okay a control group - is a group that does NOT get the thing you're testing for...
For example if you're testing a HAPPY pill, one half gets a sugar tablet (the control group) and the other half gets the actual pill.
That way you can compare the difference..
Independent variable is something that doesn't depend on the testing methodology.
Like - if I don't pay for ice cream - then you may or may NOT get some.
You going to dairy queen is independent of my actions. However If I'm buying You're eating... that's dependent.|||Experimental = The variable in which you the researcher/experimenter is manipulaiting or changing in the hopes to make some sort of discovery. Your control is what you compare your experimental varilable against. The best example is in a drug trial, where you have a new drug (experimental variable) and as a control you use a placebo (usually a sugar pill) Controls are used to help eliminate teh possibility of other circumstances confounding the outcome of the experiment (in this case the patient might get better based solely on the fact that they believe they are getting the medicine..
Independent variables are those in which the researcher has control over changing. For the above experiment, that would be the drug vs. the placebo. The dependent variable would be the thing the drug acted on. For instance, if the drug was a cholesterol lowering drug... the measured level of cholesterol in the blood would be the depentent variable. Its level is DEPENDENT upon whether or not the person received the drug or the placebo.
The experimental variable is what makes or does change.|||okay a control group - is a group that does NOT get the thing you're testing for...
For example if you're testing a HAPPY pill, one half gets a sugar tablet (the control group) and the other half gets the actual pill.
That way you can compare the difference..
Independent variable is something that doesn't depend on the testing methodology.
Like - if I don't pay for ice cream - then you may or may NOT get some.
You going to dairy queen is independent of my actions. However If I'm buying You're eating... that's dependent.|||Experimental = The variable in which you the researcher/experimenter is manipulaiting or changing in the hopes to make some sort of discovery. Your control is what you compare your experimental varilable against. The best example is in a drug trial, where you have a new drug (experimental variable) and as a control you use a placebo (usually a sugar pill) Controls are used to help eliminate teh possibility of other circumstances confounding the outcome of the experiment (in this case the patient might get better based solely on the fact that they believe they are getting the medicine..
Independent variables are those in which the researcher has control over changing. For the above experiment, that would be the drug vs. the placebo. The dependent variable would be the thing the drug acted on. For instance, if the drug was a cholesterol lowering drug... the measured level of cholesterol in the blood would be the depentent variable. Its level is DEPENDENT upon whether or not the person received the drug or the placebo.
Where can i buy a variable speed, 12 volt speed control or rheostat for my cars a/c blower motor?
My Jeeps fan speed controler died. It's a work car and I just want to buy a variable speed dial and put the old knob back on it and re-wire it to the fan motor. The dual a/c replacement control unit is $680 from Jeep. Please help. Thanks|||Get one from salvage or off ebay. You can't use a rheostat to control a fan like that, the draw is way too high, and the speeds are all wired separately.
Science project control variable?
My science project is on whether the type of liquid affects the solubility of salt. I will put 40 grams of salt in 100 grams of water, then 40 grams of salt in 100 grams of Sprite, then 40 grams of salt in 100 grams of Coca-cola.
Do you guys think that it would be too hard to see if the salt dissolves in the Coca-cola?
Also, what would my control variable be? My independent variable is the type of liquid, and my dependent variable is the amount of salt that dissolves completely. Would my control just be the temperature? Or are there more?|||Right so it is everything that you are keeping the same for all trials of the experiment, in this case it would be the amount of salt in each trial, the amount of liquid, temperature is an important one, the size of the container, and how long you allow each mixture to sit or if you stir it an equal amount of time.
Coca Cola could be an interesting challenge, perhaps if you used a clear cup you could see on all trials if the salt has dissolved or not by looking through the bottom of the clear cup.
Best of luck to ya
Do you guys think that it would be too hard to see if the salt dissolves in the Coca-cola?
Also, what would my control variable be? My independent variable is the type of liquid, and my dependent variable is the amount of salt that dissolves completely. Would my control just be the temperature? Or are there more?|||Right so it is everything that you are keeping the same for all trials of the experiment, in this case it would be the amount of salt in each trial, the amount of liquid, temperature is an important one, the size of the container, and how long you allow each mixture to sit or if you stir it an equal amount of time.
Coca Cola could be an interesting challenge, perhaps if you used a clear cup you could see on all trials if the salt has dissolved or not by looking through the bottom of the clear cup.
Best of luck to ya
What is the independent variable, dependent variable and control group for these experiments?
Experiment 1
Females fed diets high in cholesterol produced more
eggs than those fed diets which contained low levels of
cholesterol.
Experiment 2
When cocklebur seeds were subjected to the heat
shock treatment, they germinated in 3 days. It took other seeds,
not subjected to this treatment, 45 days to germinate.
Experiment 3
Male canaries can be trained to imitate melodies
they hear. Female canaries were more likely to mate with males that
imitated heavy metal music than those who had not heard any music
at all.|||1.
independent: cholesterol level in diets
dependent: egg production
control: those who were fed a regular cholesterol diet
2.
independent= treatment vs no treatment
dependent= germination time
control = no treatment
3.
independent= music melodies
dependent= attractiveness to females
control= ones where no melodies were taught
Females fed diets high in cholesterol produced more
eggs than those fed diets which contained low levels of
cholesterol.
Experiment 2
When cocklebur seeds were subjected to the heat
shock treatment, they germinated in 3 days. It took other seeds,
not subjected to this treatment, 45 days to germinate.
Experiment 3
Male canaries can be trained to imitate melodies
they hear. Female canaries were more likely to mate with males that
imitated heavy metal music than those who had not heard any music
at all.|||1.
independent: cholesterol level in diets
dependent: egg production
control: those who were fed a regular cholesterol diet
2.
independent= treatment vs no treatment
dependent= germination time
control = no treatment
3.
independent= music melodies
dependent= attractiveness to females
control= ones where no melodies were taught
What are the variables, such as independent variable, dependent variable, and Constant and Control variables?
You know you can just type that in at google. Definitions. If you don't like the definitions then type examples. Independent variable is what's being changed. Like for example if you were to change the temperature in an experiment then it'd be the independent variable. The dependent variable is the outcome. It depends on the independent. So for example it could be the plant did not grow in cold temperatures. The controlled variables are pretty easy. That's the things that don't change. For example if you were to use the same kind of plant throughout the experiment it'd be the controlled variable. I'm pretty sure constant variable is the same as controlled.
What is the independent, dependent variable, and control group in this experiement?
Homer notices that his shower is covered in a strange green slime. His friend braney tells him that coconut juice will get rid of the green slime. Homer decides to check this out by spraying hald the shower with cocunut juice and the other with water! HELPP PLEASE!!|||dependent variable: spraying coconut juice
because is the variable that YOU control
the independent one is is what the dependent caused..
the control group is the side sprayed with water..
if u had a new medicine and u give it to only have A and not B, A is the experimental group and B the control group
hope this helps|||The independent variable, teh one you manipulate directly,
(usually the item under test), is the fluid sprayed
for cleaning the slime. - Water vs coconut juice.
The dependent variable is the amount of slime removed.
(This should be as unform as possible.
A better experiment might be to use two parts
of the same wall to get 'equal slime' for the test.)
The control group is the half sprayed with water used as a comparison.
What is missing is a calibrated measurement of the difference.
Maybe Homer could call in Ned Flanders to assign 'cleanily eenily' numbers.
because is the variable that YOU control
the independent one is is what the dependent caused..
the control group is the side sprayed with water..
if u had a new medicine and u give it to only have A and not B, A is the experimental group and B the control group
hope this helps|||The independent variable, teh one you manipulate directly,
(usually the item under test), is the fluid sprayed
for cleaning the slime. - Water vs coconut juice.
The dependent variable is the amount of slime removed.
(This should be as unform as possible.
A better experiment might be to use two parts
of the same wall to get 'equal slime' for the test.)
The control group is the half sprayed with water used as a comparison.
What is missing is a calibrated measurement of the difference.
Maybe Homer could call in Ned Flanders to assign 'cleanily eenily' numbers.
What is the independent/dependent variable and control in this experiment?
This is about enzymes.
In one test I am seeing how many pennies i can pick up with my bare hand in 10 seconds.
In another test I am seeing how many pennies i can pick up with a glove on in 10 seconds.
In another test I am seeing how many pennies i can pick up with a tennis ball taped to my palm in 10 seconds.
(this is all one experiment)|||look the indep.v is something that will not change ( time 10 secnds)
the dep. v is what change ( ex. test #1 =30 coins #2 = 10 ....)
the control in this experiment ( how many you pic with bare hands)|||The amount of pennies you can pick-up is DEPENDENT on what device you are utilizing to do the picking-up.
In one test I am seeing how many pennies i can pick up with my bare hand in 10 seconds.
In another test I am seeing how many pennies i can pick up with a glove on in 10 seconds.
In another test I am seeing how many pennies i can pick up with a tennis ball taped to my palm in 10 seconds.
(this is all one experiment)|||look the indep.v is something that will not change ( time 10 secnds)
the dep. v is what change ( ex. test #1 =30 coins #2 = 10 ....)
the control in this experiment ( how many you pic with bare hands)|||The amount of pennies you can pick-up is DEPENDENT on what device you are utilizing to do the picking-up.
What is the independent/dependent variable and control in this experiment?
This is about enzymes.
In one test I am seeing how many pennies i can pick up with my bare hand in 10 seconds.
In another test I am seeing how many pennies i can pick up with a glove on in 10 seconds.
In another test I am seeing how many pennies i can pick up with a tennis ball taped to my palm in 10 seconds.
(this is all one experiment)|||Dependent variable is the number of pennies you pick up. This depends on the independent variable (the one you change) = the state of your hands (gloved or not etc.).
In one test I am seeing how many pennies i can pick up with my bare hand in 10 seconds.
In another test I am seeing how many pennies i can pick up with a glove on in 10 seconds.
In another test I am seeing how many pennies i can pick up with a tennis ball taped to my palm in 10 seconds.
(this is all one experiment)|||Dependent variable is the number of pennies you pick up. This depends on the independent variable (the one you change) = the state of your hands (gloved or not etc.).
What is the independent variable, dependent variable, and control group?
I need to know what these are. It will be nice if you post and example.|||There are literally hundreds of web sites that already contain clear definitions and examples of these common scientific terms. Please use the WEB SEARCH at the very top of the window or go to google. You'll find reliable resources there...and it's probably where you should have started in the first place. Your science book would also be an ideal place to look...wouldn't it???|||The independent variable is the thing that you are changing. the dependent variable is a result of that change. the control is not changed at all.
In experiments, does the Control group form part of the independent variable?
Lets say there's an experiment consisting of two groups, a group of Depressed subjects and a control group of Non-Depressed subjects.. with certain drug treatments to be tested on them and measurements taken.
Would one of the independent variables be Depressed/Non-Depressed? Or does information about the control group not form part of the independent variable?|||Yes, the control group (and the experimental group) do constitute an independent variable. An independent variable is basically any differences in your sample that you explicitly manipulate (by assigning people to conditions) and/or make comparisons between.
So in the case you describe, a simple design would be
Depressed vs non-depressed, where you have 1 IV.
If you're varying the types of treatment used, you could have 2 IVs, being
IV1 = depressed vs non-depressed
IV2 = Drug type a vs drug type b vs placebo (placebos are often used as controls in drug trials)
Similarly a 3 IV design might be:
IV1 = depressed vs non-depressed
IV2 = Drug type
IV3 = Male vs female
An independent variable refers to the dimension on which they differ (e.g. their depression status, their sex status etc.), rather than what the groups you separate them into are within that (be it 2 groups, 5 groups etc.).
Would one of the independent variables be Depressed/Non-Depressed? Or does information about the control group not form part of the independent variable?|||Yes, the control group (and the experimental group) do constitute an independent variable. An independent variable is basically any differences in your sample that you explicitly manipulate (by assigning people to conditions) and/or make comparisons between.
So in the case you describe, a simple design would be
Depressed vs non-depressed, where you have 1 IV.
If you're varying the types of treatment used, you could have 2 IVs, being
IV1 = depressed vs non-depressed
IV2 = Drug type a vs drug type b vs placebo (placebos are often used as controls in drug trials)
Similarly a 3 IV design might be:
IV1 = depressed vs non-depressed
IV2 = Drug type
IV3 = Male vs female
An independent variable refers to the dimension on which they differ (e.g. their depression status, their sex status etc.), rather than what the groups you separate them into are within that (be it 2 groups, 5 groups etc.).
What is the following scenario: the control, the independent variable, the dependent variable.?
Tricia cat was being really picky on her food choice. In order to decide her cat's perference, tricia tested 3 cat foods to see which one she ate more of.
Control;
indepenent:
depenent:|||a control is something that never changes, and the dependent variable depends on the independent variable. ( For example on a graph the independent variable can be time and the depends variable can be algae growth. The algae growth depends on the time its been allowed to grow.)
I would say that the cat food is the independent variable because the amount the cat eats depends on the food type.
Control;
indepenent:
depenent:|||a control is something that never changes, and the dependent variable depends on the independent variable. ( For example on a graph the independent variable can be time and the depends variable can be algae growth. The algae growth depends on the time its been allowed to grow.)
I would say that the cat food is the independent variable because the amount the cat eats depends on the food type.
What is the variable and control in my experiment. Plz help project grade?
I am testing how 4 different fertilizer effects the growth of a tomato plant.
Check if i am right.
Independent Variable- The sunlight and water
Dependent Variable- The growth of the plant using for fertilizers I no i am wrong
Constant- The amount each plant gets|||The Independent is that thing that gets changed or manipulated.
The Dependent is the observation of that change.
The constant is the thing that never gets changed.
In your case
Ind. = fertilizer type
Dep. = rate of growth
Constants = water, sunlight, soil, temperature, air, quantity of fertilizer.
Your non-rejectable Null is probably "Adding fertilizer improves tomato growth".
Your Alternate is "One fertilizer is better than the others."
Why did I answer this question and how did I get here...???|||The independent variable is the one you are testing or more clearly the one you're changing from trial to trial. The dependent variable is the one you are measuring.
In the case of this experiment, your independent variable would be the fertilizer, our dependent would be the plant growth, and your constant would be everything else.
Check if i am right.
Independent Variable- The sunlight and water
Dependent Variable- The growth of the plant using for fertilizers I no i am wrong
Constant- The amount each plant gets|||The Independent is that thing that gets changed or manipulated.
The Dependent is the observation of that change.
The constant is the thing that never gets changed.
In your case
Ind. = fertilizer type
Dep. = rate of growth
Constants = water, sunlight, soil, temperature, air, quantity of fertilizer.
Your non-rejectable Null is probably "Adding fertilizer improves tomato growth".
Your Alternate is "One fertilizer is better than the others."
Why did I answer this question and how did I get here...???|||The independent variable is the one you are testing or more clearly the one you're changing from trial to trial. The dependent variable is the one you are measuring.
In the case of this experiment, your independent variable would be the fertilizer, our dependent would be the plant growth, and your constant would be everything else.
What is the control, experimental variable, responding variable, experimental error, and the conclusion?
A randomly selected group of 1,092 students were chosen to taste a new and improved formulation of sour cream and onion potato chips. Each students ate 15 ounces of potato chips of the 563 students that were given a new formulation of sour cream and onion potato chips, 89 developed cramps from gas. Of the 529 students that ate the old formulation of sour cream and onion potato chips, 111 developed cramps. what is the control, experimental variable, responding variable, experimental error, and the conclusion?|||The control were the students who did NOT eat the altered potato chips, the experimental variable was the altered chips, the responding variable were the cramps, the experimental error was the 111 who got cramps from the old formula and the conclusion is that the new formula causes less cramps than the old.
Explain the difference between control and variable?
Control= stays the same, nothing happens to it.
Variable= what is added to change it|||control is controls the all changes a/c to conditions..........
variables are changed
Variable= what is added to change it|||control is controls the all changes a/c to conditions..........
variables are changed
Thursday, December 15, 2011
What would be the independent, dependent variable and control for this experiment?
What effect does water warmed up in the microwave have on plants?|||Well are you putting any kind of time frame on the results? If so the time is the independent variable. The questino wasn't very clear so that's the best I can do, sorry.
Have a good day.
Have a good day.
What is the independent variable dependent variable and control group?
I am measuring sky glow at the same location on different days i use a camera to measure it and i angle the camera at the same angle|||independent variable: Different days. This is what the researcher is changing on purpose
dependent variable: sky glow (distance measured by the camera)
constants: angle of the camera, same time of day, same location, same camera
control group: I'm not sure since the definition is a group not using the independent variable, which is different days. You have to do it on a day, you can't change that aspect, so I'm not sure. I guess you can use day 1 as your control.|||I think the dependent variable would be the sky glow, since what presumably will change, the independent is the angle of the camera, since that is what doesn't change, and controlled variables would be weather that night, the type of camera you are using, and which area of the sky you will be viewing.
dependent variable: sky glow (distance measured by the camera)
constants: angle of the camera, same time of day, same location, same camera
control group: I'm not sure since the definition is a group not using the independent variable, which is different days. You have to do it on a day, you can't change that aspect, so I'm not sure. I guess you can use day 1 as your control.|||I think the dependent variable would be the sky glow, since what presumably will change, the independent is the angle of the camera, since that is what doesn't change, and controlled variables would be weather that night, the type of camera you are using, and which area of the sky you will be viewing.
What is the Independent Variable and Control in my Science Experiment?
My experiment is : Will oil affect the growth of aquatic plants?
I will have two identical setups with marine plants in each tank, but I am adding oil to one bowl and seeing how it affects it compared to the other.
Thank you!|||independent: amount of oil
dependent: growth of plants
control group: plants in tank without oil
experimental group: group that has oil in tanks.
constants: amount of water, same type of tanks, same type of plants, same amount of food, same sized plants, water is at the same temperature|||Independent variable is the amount of oil you add.
Dependent variable is whatever is affected by the oil (whatever you are testing for).
The control is the bowl that you aren't adding oil to.|||Your controlled variable are the things that are the same : smae plants, same tank, same soil same water.
Your independent is the amount of oil or lack thereof.
I will have two identical setups with marine plants in each tank, but I am adding oil to one bowl and seeing how it affects it compared to the other.
Thank you!|||independent: amount of oil
dependent: growth of plants
control group: plants in tank without oil
experimental group: group that has oil in tanks.
constants: amount of water, same type of tanks, same type of plants, same amount of food, same sized plants, water is at the same temperature|||Independent variable is the amount of oil you add.
Dependent variable is whatever is affected by the oil (whatever you are testing for).
The control is the bowl that you aren't adding oil to.|||Your controlled variable are the things that are the same : smae plants, same tank, same soil same water.
Your independent is the amount of oil or lack thereof.
What are the independent variable, dependent variable, and control in my experiment?
My hypothesis is if Dry Ice is added to a fire the fire will die. The more dry ice added the faster the fire dies.|||Independant: Ice. Dependant: Fire Control: Amount of ice added to each fire or size if the fires|||Independent: Amount (maybe weight) of ice added.
Dependent: Size of fire (maybe at a certain time after addition of ice)
You might have also have time after ice added as independent variable and size of fire as dependent. (maybe 3 dimensional data)
Dependent: Size of fire (maybe at a certain time after addition of ice)
You might have also have time after ice added as independent variable and size of fire as dependent. (maybe 3 dimensional data)
Which group is control group and variable group?
Suppose a scientist wants to test a new drug to fight the flu. The scientist injects the drug into three people with the flu. The scientist injects a harmless solution into three other people with the flu. In this experiment, what is the variable group and what is the control group?|||the Control group would be the harmless solution
the Variable group would be the Drug he injected into the three people
Hope it helps :D
the Variable group would be the Drug he injected into the three people
Hope it helps :D
What is the diffrence between variable and control?
Also, mL and cm^3 are both units of what?
And what is the diffrence between mL and cm^3?
1mL = 1cm^3 means what exactly?|||control is the thing that you pretty much know whats going to happen.
variable is the thing thats gonna come out different (most likely it should anyways) because you're doing something different.|||variable is what you change, control is everything you are leaving the same
example, what type of water is better for plants..
you might have 3 plants, one get no water, one get clean water, one get tap water..
variable will be water
control will be amount of sunlight, type of soil, type of plant, time given to grow...list goes on and on|||Variable is when the items are diff. %26amp; in a control they stay the same and don't change.
And what is the diffrence between mL and cm^3?
1mL = 1cm^3 means what exactly?|||control is the thing that you pretty much know whats going to happen.
variable is the thing thats gonna come out different (most likely it should anyways) because you're doing something different.|||variable is what you change, control is everything you are leaving the same
example, what type of water is better for plants..
you might have 3 plants, one get no water, one get clean water, one get tap water..
variable will be water
control will be amount of sunlight, type of soil, type of plant, time given to grow...list goes on and on|||Variable is when the items are diff. %26amp; in a control they stay the same and don't change.
Does control group and control variable mean the same thing?
if they dont can you explain why?|||NO
The variable is the thing in the experiment that you change.
The control group is the part that you do not change|||i say they are very related, but not the same thing. the control group is the group of test subjects in which the control variable is implemented or observed.
The variable is the thing in the experiment that you change.
The control group is the part that you do not change|||i say they are very related, but not the same thing. the control group is the group of test subjects in which the control variable is implemented or observed.
What does it mean to control a variable?
Does it mean that you set limitations? Thanks.|||It means that you design things so that the variable cannot influence experimental results. It can be inherent to the experiment, or it can be part of your analysis.
So if I control for gender during analysis, I might, for instance, only compare participants of the same gender to one another when doing statistical tests, etc.
An example of control inherent to the experiment would be testing a drug only on patients who have had a certain type of cancer for exactly 3 months - you would be controlling for diagnosis.
So if I control for gender during analysis, I might, for instance, only compare participants of the same gender to one another when doing statistical tests, etc.
An example of control inherent to the experiment would be testing a drug only on patients who have had a certain type of cancer for exactly 3 months - you would be controlling for diagnosis.
How do you find the control and variable of a science experiment?
easy the control is something that has stayed the same the whole process
the variable is something that canges throughout the pproject|||Example problem
find best fertilizer
need 2 plants with same pot, same amt of sun and water and same everything else besides fertilizer
the fertilizer is the variable everything else is a control
the variable is something that canges throughout the pproject|||Example problem
find best fertilizer
need 2 plants with same pot, same amt of sun and water and same everything else besides fertilizer
the fertilizer is the variable everything else is a control
What is another name for a control variable?
(Science] answer please and thanks :D|||independent variable is something you control if you're looking for that kind of answer|||A control system has basically three types of variables.
a) Independent input, disturbance or set point , are one and the same.
b) Error or control (input minus output)
c) Output or controlled variable.
.
a) Independent input, disturbance or set point , are one and the same.
b) Error or control (input minus output)
c) Output or controlled variable.
.
Control group and variable ? for the "penny lab" (how many drops of water can fit on a penny ?)?
Hi, my teacher made us do the "Penny Lab"
and we had to write an inquiring question:
How many drops of H2O will fit on a penny (tail side)(one-inch height) and other things for labs.
and anyways our homework she says is:
"Establish your Control with materials available to you at home. Do 10 trials for control. Then change one variable and do 10 trials again. To add to your already completed lab write up add the following things and bring it to class on Monday:
- 5 more research questions pertaining to your variable.( So you should have total of 15 questions and answers)
-two hypotheses, one for control and one for new variable
-Rewrite your Experiment under 3 titles: Materials
Procedure, Labelled diagram"
i don't understand what the variable and control group is, i am planning to change the 'dropper' to a water bottle with a hole in it though. so is that the variable that is changed? i'm confused as to what 5 questions too. So if anyone can help, thanks :)|||Your constant would be the one thing that is constant in all the repetitions of the experiment, ie, you use the same penny for all the repetitions, use only distilled water for all repetitions, same dropper, etc. Your variable could be using differnt pennies for the repetitions, different contaminants in precise concentrations for the repetitions, temperature variations, etc. Your control GROUP would be the first group of repetitions where you used the distilled H2O at a constant temperature on the same penny, from the same dropper, recorded each result, then averaged the results for that set. This is introducing the concept of scientific research, where you determine the effects of a variable on a system.|||Did you have Mrs. Sabherwal for Biology???
|||they are not always exact because my freind says 43 and i say 14-16 drops and we both did we both did expiriments on the subject!
hope i helped you in some way!
-Mia Elledge %26amp; Porshay August|||Independent Variable is the thing you change in the experiment ex: H2O to vinager or other liquid substance. Dependent variable is what changes because of you changing something.
Control could be the temperature of the water or other liquid it should be a constant. What you use to drop the water on the penny, the angle in which you hold the dropper, or the heighth you drop from etc... My 8th grade students just did this lab in class last week.
and we had to write an inquiring question:
How many drops of H2O will fit on a penny (tail side)(one-inch height) and other things for labs.
and anyways our homework she says is:
"Establish your Control with materials available to you at home. Do 10 trials for control. Then change one variable and do 10 trials again. To add to your already completed lab write up add the following things and bring it to class on Monday:
- 5 more research questions pertaining to your variable.( So you should have total of 15 questions and answers)
-two hypotheses, one for control and one for new variable
-Rewrite your Experiment under 3 titles: Materials
Procedure, Labelled diagram"
i don't understand what the variable and control group is, i am planning to change the 'dropper' to a water bottle with a hole in it though. so is that the variable that is changed? i'm confused as to what 5 questions too. So if anyone can help, thanks :)|||Your constant would be the one thing that is constant in all the repetitions of the experiment, ie, you use the same penny for all the repetitions, use only distilled water for all repetitions, same dropper, etc. Your variable could be using differnt pennies for the repetitions, different contaminants in precise concentrations for the repetitions, temperature variations, etc. Your control GROUP would be the first group of repetitions where you used the distilled H2O at a constant temperature on the same penny, from the same dropper, recorded each result, then averaged the results for that set. This is introducing the concept of scientific research, where you determine the effects of a variable on a system.|||Did you have Mrs. Sabherwal for Biology???
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|||they are not always exact because my freind says 43 and i say 14-16 drops and we both did we both did expiriments on the subject!
hope i helped you in some way!
-Mia Elledge %26amp; Porshay August|||Independent Variable is the thing you change in the experiment ex: H2O to vinager or other liquid substance. Dependent variable is what changes because of you changing something.
Control could be the temperature of the water or other liquid it should be a constant. What you use to drop the water on the penny, the angle in which you hold the dropper, or the heighth you drop from etc... My 8th grade students just did this lab in class last week.
飪?How would use a resistor that has variable amount of a resistance to control amount of current in a circuit,
飪?How would use a resistor that has variable amount of a resistance to control amount of current in a circuit, give an example of where this might be use?|||Use the resistor to control the brightness of a bulb.
Wire a flashlight bulb in series with the variable resistor and a small battery. As you vary the resistance, the bulb will change in brightness; lower resistance = more current = brighter bulb.
Wire a flashlight bulb in series with the variable resistor and a small battery. As you vary the resistance, the bulb will change in brightness; lower resistance = more current = brighter bulb.
Scientific Question, Independent variable, Dependent variable, control group, how to improve accuracy?
Experiment: three types of antibacterial soap, and a sample sized people, lets say 100 people wash their hands per soap. and c how many bacterias are left on their hands after washing. Please give me examples of the questions asked if you do not mind. thank u
Scientific Question, Independent variable, Dependent variable, control group, how to improve accuracy?|||The independent variable is type of soap because you can control that. The dependent variable is number of bacteria because that (possibly) changes due to the soap.
A control group would be people who washed their hands using no soap or possibly a non-anti-bacterial type.
Scientific Question, Independent variable, Dependent variable, control group, how to improve accuracy?|||The independent variable is type of soap because you can control that. The dependent variable is number of bacteria because that (possibly) changes due to the soap.
A control group would be people who washed their hands using no soap or possibly a non-anti-bacterial type.
What would be the independent variable, dependent variable, control group, experimental group?
A health psychologist wants to test the hypothesis that yellow hospital rooms will shorten the recovery time for surgical patients when compared to recovery times of patients in standard white hospital rooms. Half of the patients are randomly assigned to yellow rooms, the other half to white rooms. The number of days until recovery is noted for each patient.|||independent variable: color of the walls
dependent variable: length of recovery time
control group: the half in white rooms.
experimental group: the half in yellow rooms.
dependent variable: length of recovery time
control group: the half in white rooms.
experimental group: the half in yellow rooms.
What is the independent variable,dependent variable,control,and constant of my science project?
my topic is "Which fast food is the main cuase of obesity in america?" my choices are french fries,pizza,hamburger,%26amp;chicken.|||well at first u have to knw wat is variable ....
a variable is a value that can b varied with or without respect of the term/equation
when it depends its dependant variable
and
when variable doesnt depend on equation then its independant variable, and it can also be called constant with respect to that equation ...
constant is a value that doest depent on equation ...
eg: 4x+5y=0
here x and y are variables while 4 nd 5 are constants
a variable is a value that can b varied with or without respect of the term/equation
when it depends its dependant variable
and
when variable doesnt depend on equation then its independant variable, and it can also be called constant with respect to that equation ...
constant is a value that doest depent on equation ...
eg: 4x+5y=0
here x and y are variables while 4 nd 5 are constants
What would be the control, dependent variable, and independent variable?
This is the hypothesis "Would video games affect your heart rate? My brother doesn't trust my answers so I need someone to prove me right!|||That is your question.
Your hypothesis would be how you think (make a logical guess) the video games would affect heart rate. For example: "Video games will increase the player's heart rate."
Your hypothesis would be how you think (make a logical guess) the video games would affect heart rate. For example: "Video games will increase the player's heart rate."
What is the control, independent variable, and dependant variable in this experiment?
we are testing to see which brand of waterproof mascara works best...the ingredient in mascara that makes it waterproof is isododecanne. we are going to dunk are heads in water/cry/spray with hose(rain) so i need help because i cant figure this out thanks!|||you control is isododecanne, because thats your constant. Your independent is what you are changing: water, cry, spray. and your dependent is what will happen because of it.|||Control- person its on (Only one of you should be the subject)
Independent- The way its getting wet (There should only be one way for accurate results)
Dependent- the mascara/how it reacts
Independent- The way its getting wet (There should only be one way for accurate results)
Dependent- the mascara/how it reacts
What value is used to control how the loop control variable is incremented in a for loop?
What programming language are you using?
Java, JavaScript, C++, php... ?
All of these languages are similar. Here is a for-loop in Java.
for (int i = 0; i %26lt; n; i++) {
Sytem.out.println("i = " + i);
}
In the above code, the variable named "i" is set to zero for the first iteration and is incremented by one each time that the loop is executed.
Java, JavaScript, C++, php... ?
All of these languages are similar. Here is a for-loop in Java.
for (int i = 0; i %26lt; n; i++) {
Sytem.out.println("i = " + i);
}
In the above code, the variable named "i" is set to zero for the first iteration and is incremented by one each time that the loop is executed.
What is my control variable?
My Science Experiment
My problem: What helps plants grow better? Light or darkness.
I am conducting a science experiment testing the factor of darkness VS sunlight on two pansies potted with the same type of soil, in small, identical clay pots. My hypothesis for the test is that the pansy subjected to light will live longer than the pansy subjected to dark.
My list of constants:
鈥?The pansies, because they are the same type of flower.
鈥?The pots, because they are both small, identical, clay pots.
鈥?The soil in the pots, because they are the same type of soil.
My control variable is the ............................(
My dependant variable is the how much the pansies grow. The independent variable is theamount of light given to the pansies.
My plan for the experiment:
I will take two pansies potted with the same type of soil, in small, identical clay pots, and subject Pansy #1 to sunlight, and Pansy #2 to darkness. After|||actually, a more appropriate set up would involve at least three pansy plants (significant sampling sizes may be beyond the scope of this particular experiment): one grows in continous dark, one grows in continuous light, one grows outside with a "normal" light/dark (day/night) cycle--your control plant (but actually, it would be better if you had this plant exposed to light that is timed for 12/12hrs light/dark...because being outside would make this plant different from your test plants)
you would measure the difference in growth of the plants grown in the dark/light in comparison to the control plant's "normal" growth.
other constants you might want to consider: temperature, humidity, amount of water, amount of soil, time of water, time when you take measurements.
and your variable would be different light exposure (constant dark/constant light). you could also get a little more fancy by seeing amount of light provides optimum growth where you would have different pansies growing exposed to 24hrs, 18hrs, 12hrs, 6hrs, 3hrs, 0hrs of light.|||Your control variables are the constants that you listed; pansies, pots, and soil. Control variables are just the things kept the same throughout the experiment.
I'm doing an experiment similar to this too ;)|||The control varible, or rather, the independant varible, or even the manipulated varible, depended where you went to school, or where you work, would probably be the light/dark factor, because you can put the plant in the light, but at the same time, you can put it away in the dark. It can't be the actual flowers, because you can't control how fast/high they grow. You can to a point, but not completely.|||The amount of light.
My problem: What helps plants grow better? Light or darkness.
I am conducting a science experiment testing the factor of darkness VS sunlight on two pansies potted with the same type of soil, in small, identical clay pots. My hypothesis for the test is that the pansy subjected to light will live longer than the pansy subjected to dark.
My list of constants:
鈥?The pansies, because they are the same type of flower.
鈥?The pots, because they are both small, identical, clay pots.
鈥?The soil in the pots, because they are the same type of soil.
My control variable is the ............................(
My dependant variable is the how much the pansies grow. The independent variable is theamount of light given to the pansies.
My plan for the experiment:
I will take two pansies potted with the same type of soil, in small, identical clay pots, and subject Pansy #1 to sunlight, and Pansy #2 to darkness. After|||actually, a more appropriate set up would involve at least three pansy plants (significant sampling sizes may be beyond the scope of this particular experiment): one grows in continous dark, one grows in continuous light, one grows outside with a "normal" light/dark (day/night) cycle--your control plant (but actually, it would be better if you had this plant exposed to light that is timed for 12/12hrs light/dark...because being outside would make this plant different from your test plants)
you would measure the difference in growth of the plants grown in the dark/light in comparison to the control plant's "normal" growth.
other constants you might want to consider: temperature, humidity, amount of water, amount of soil, time of water, time when you take measurements.
and your variable would be different light exposure (constant dark/constant light). you could also get a little more fancy by seeing amount of light provides optimum growth where you would have different pansies growing exposed to 24hrs, 18hrs, 12hrs, 6hrs, 3hrs, 0hrs of light.|||Your control variables are the constants that you listed; pansies, pots, and soil. Control variables are just the things kept the same throughout the experiment.
I'm doing an experiment similar to this too ;)|||The control varible, or rather, the independant varible, or even the manipulated varible, depended where you went to school, or where you work, would probably be the light/dark factor, because you can put the plant in the light, but at the same time, you can put it away in the dark. It can't be the actual flowers, because you can't control how fast/high they grow. You can to a point, but not completely.|||The amount of light.
What is the difference between a control variable and a control group and how do they relate to each other?
A control variable is not a dependent or independent variable. Once chosen it is held constant.
A control group is held secluded in an experiment to compare with other groups exposed to different experiments.
A control group is held secluded in an experiment to compare with other groups exposed to different experiments.
What variable resistor to control motor speed?
if i know the voltage (3v), current (100mA) and terminal resistance (27.6 Ohm) of a small dc motor how do i work out what variable resistor rating to use to control it?|||It depends on the stall voltage of the motor, which depends on the motor and the mechanical load. I would guess at a 20 or 50 ohm variable resistor in series with the motor.
Using a variable resistor is a very inefficient way to control a motor because the resistor dissipates power. Also, low resistance values like this are hard to find. A better way would be to use a 555 timer as an oscillator with variable pulse-width, driving the motor with a common-emitter NPN transistor.
|||Is it a shunt wound motor or a series wound motor.
For a shunt wound motor i.e where the field coils are in parallel with the rotor, which is essentially a constant speed device the speed N is proportional to Voltage(V) - armature current(Ia) x armature resistance(Ra). You need to measure Ra to find the range of resistance required which must be put in the armature circuit. The torque is proportional to Ia so this will drop as you increase Ra.
The characteristic of a series motor where the field coils are in series with the rotor is different and speed is proportional to 1/Ia. This is why you should never run a series DC motor on no load as Ia will be very small and the speed will be very high. A diverter resistance across the armature would give speeds lower than normal as this will increase the current through the motor and again you need Ra to determine the range of resistance required.
Using a variable resistor is a very inefficient way to control a motor because the resistor dissipates power. Also, low resistance values like this are hard to find. A better way would be to use a 555 timer as an oscillator with variable pulse-width, driving the motor with a common-emitter NPN transistor.
|||Is it a shunt wound motor or a series wound motor.
For a shunt wound motor i.e where the field coils are in parallel with the rotor, which is essentially a constant speed device the speed N is proportional to Voltage(V) - armature current(Ia) x armature resistance(Ra). You need to measure Ra to find the range of resistance required which must be put in the armature circuit. The torque is proportional to Ia so this will drop as you increase Ra.
The characteristic of a series motor where the field coils are in series with the rotor is different and speed is proportional to 1/Ia. This is why you should never run a series DC motor on no load as Ia will be very small and the speed will be very high. A diverter resistance across the armature would give speeds lower than normal as this will increase the current through the motor and again you need Ra to determine the range of resistance required.
What will be the control and variable in this science project?
Problem: Does the storage temperature affect the pH of juice?|||i believe the juice's ph at a certain temperature would be the control and the variable would be the different temperatures you use to measure whether or not the pH of the juice changes w/ temp.|||The so called "best answer" for this question is incorrect. The control in the experiment is the juice that hasn't had it's temperature changed. And also the type of juice. There are 2 variables, independent and dependent. Independent would be the temperature. Dependent is the resulting pH.
|||A control would be juice that hasn't had its temperature changed. There are two variables, temperature and pH. Temperature is the independent variable and pH is the dependent variable.
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|||A control would be juice that hasn't had its temperature changed. There are two variables, temperature and pH. Temperature is the independent variable and pH is the dependent variable.
What is a control group, independent variable and a dependent variable?
I know that a variable is something that can be changed but I dont understand. If you could answer my question and also give a brief example that would be great. Thanks!|||This is usually an easy one to understand-
The more you water plants, the more they grow.
In this example, the independent variable would be water on the plants, because that is what you know you are going to be changing. The dependent variable will be plant growth, because it depends on how much water you give the plants. The control would be plants that aren't being watered, because control is what you compare the results to. If you just watered the plants, you wouldn't know if it has an affect unless you have something to compare it to, such as plants that have no water.
The more you water plants, the more they grow.
In this example, the independent variable would be water on the plants, because that is what you know you are going to be changing. The dependent variable will be plant growth, because it depends on how much water you give the plants. The control would be plants that aren't being watered, because control is what you compare the results to. If you just watered the plants, you wouldn't know if it has an affect unless you have something to compare it to, such as plants that have no water.
What is a control variable for testing pollution's impact on invertebrates?
besides health, and amount of pollution.|||hey see www.topideaz.com for this. Navigate through the links available on left and right side.
What is a independent variable, dependent variable, and control group?
I am 14 years old so try and put it in a kid way please, i think independent variable is like the "experiment" like the main thing. But am still unsure of the rest, make it as easy and simple as possible ty|||Independent Variable: what the experimenter uses or changes to produce results.
Dependent Variable: Measured changed due to independent variable.
Control Group is what stayed the same.
Ex: You are testing the growth of flowers. You believes that flowers with fertilizer grows taller. You water the flowers equally each day. The flowers receives an equal amout of sunlight each day.
Independent V: Fertilizer(It's changing the growth).
Dependent Variable: The Height of the flowers(whats being measured)
Control Group: Water %26amp; Sunlight. (What stays the same)|||In in an experiment you change the independent variable.
Say, you want to see if a tennis ball with a big hole or a small hole floats better.
It's the thing that is never the same.
It's indepent, it's crazy and on it's own. =P
The dependent is the time it takes to sink, it's the part of the experiment that you can't change directly.
and the control would be a tennis ball that you didn't change at all, a normal one.
Dependent Variable: Measured changed due to independent variable.
Control Group is what stayed the same.
Ex: You are testing the growth of flowers. You believes that flowers with fertilizer grows taller. You water the flowers equally each day. The flowers receives an equal amout of sunlight each day.
Independent V: Fertilizer(It's changing the growth).
Dependent Variable: The Height of the flowers(whats being measured)
Control Group: Water %26amp; Sunlight. (What stays the same)|||In in an experiment you change the independent variable.
Say, you want to see if a tennis ball with a big hole or a small hole floats better.
It's the thing that is never the same.
It's indepent, it's crazy and on it's own. =P
The dependent is the time it takes to sink, it's the part of the experiment that you can't change directly.
and the control would be a tennis ball that you didn't change at all, a normal one.
I dont know which is the dependent variable, independent variable, or control in this experiment?
my hypothesis is can the amount of alcohol effect the way these mouth washes work?(listerine, scope, crest) and the amount of alcohol in each mouth wash. what is the dependent variable which is the independent variable and which is the control?
AND PLEASE HURRY I HAVE TO WRITE AN ESSAY DUE TOMORROW!!!PLZ HURRY;0|||Another name for the independent variable is the Manipulated Variable - that is the variable the scientists are changing on purpose - in this case it would be the amount of alcohol contained in the different types of mouthwash.
Another name for the dependent variable is the Measured Variable - in this case the way the mouth washes "work." Here is where I think you have a flaw in your design - how can you MEASURE the way mouthwash works? You need to consider this point carefully.
Finally, the controlled variables are all of the conditions you would keep the same in each trial - for example the amount of mouthwash used for each test, and the amount of time you wait for each mouthwash to "work" (whatever that means).
Good luck!|||the independent varible is the varible that is changed (the mouth washes) and the dependent is the varible thats mesured (the amount of alcohol) the control would be a mouthwashing with just water...no variability or change..nothing to measure...hence its a control
AND PLEASE HURRY I HAVE TO WRITE AN ESSAY DUE TOMORROW!!!PLZ HURRY;0|||Another name for the independent variable is the Manipulated Variable - that is the variable the scientists are changing on purpose - in this case it would be the amount of alcohol contained in the different types of mouthwash.
Another name for the dependent variable is the Measured Variable - in this case the way the mouth washes "work." Here is where I think you have a flaw in your design - how can you MEASURE the way mouthwash works? You need to consider this point carefully.
Finally, the controlled variables are all of the conditions you would keep the same in each trial - for example the amount of mouthwash used for each test, and the amount of time you wait for each mouthwash to "work" (whatever that means).
Good luck!|||the independent varible is the varible that is changed (the mouth washes) and the dependent is the varible thats mesured (the amount of alcohol) the control would be a mouthwashing with just water...no variability or change..nothing to measure...hence its a control
What is the control variable?
We performed an experiment in my biology lab in order to test neuromuscular response time. Basically, we did that popular experiment with the ruler in which one person drops a ruler and another one catches it. Anyway, for the experiment, we were seeing the differences between men and women.
So, I know the independent variable is gender and the dependent variable is reaction time.
Is there a control variable?? If so what is it?? (All we did was drop the ruler twice for each person within our lab groups) Please help!
By the way: To standardize the experiment: We made the people dropping the ruler drop it with their right hand at the same height using the same type of meter stick.
Thank you!|||If anything in my brain is correct, then the control variable of the experiment could be the room you are in, it isn't a such noticed variable, so let's say. 10 experiments are done, correct? Okay, 10 experiments that are the same as what you are doing,are done in a specific room, thus the room is the environment of the experiment. The control variable is a variable that does not change, it is the constant variable of the 3 variables. Such as, Independent, and Dependent. So if any it might be the environment in which the experiment was held. Unless you are referring to the controlled variable, which would be another term for the Independent Variable.|||the control would be what ever is not the variable, the norm. the norm would be the ruler because it is never changing it is the same.
So, I know the independent variable is gender and the dependent variable is reaction time.
Is there a control variable?? If so what is it?? (All we did was drop the ruler twice for each person within our lab groups) Please help!
By the way: To standardize the experiment: We made the people dropping the ruler drop it with their right hand at the same height using the same type of meter stick.
Thank you!|||If anything in my brain is correct, then the control variable of the experiment could be the room you are in, it isn't a such noticed variable, so let's say. 10 experiments are done, correct? Okay, 10 experiments that are the same as what you are doing,are done in a specific room, thus the room is the environment of the experiment. The control variable is a variable that does not change, it is the constant variable of the 3 variables. Such as, Independent, and Dependent. So if any it might be the environment in which the experiment was held. Unless you are referring to the controlled variable, which would be another term for the Independent Variable.|||the control would be what ever is not the variable, the norm. the norm would be the ruler because it is never changing it is the same.
Do control variable and dependent variable mean the same thing?
I am looking at a study and it talks about the control variables. Specifically, it says that the control variables are gender, race and education as variables to how much television a child watches.|||the control variable is actually the independent variable. it's the variable that you as an experimenter can manipulate (ie. you can choose to look at only women, only Caucasians, only preschoolers, etc etc). How many hours of television a child watches is the dependent variable and you as an experimenter can't manipulate that (well, i guess you can by switching the tv off but that would defeat the point of the actual study) |||Control variable is just another way of saying an independent variable,
The dependent variable is dependent on the independant variable,
so if you have y=3x+6
x is the dependent variable, as if you make y=1 then 1*3+6=9
so x depends on the value of y|||Above answer is true upto some extent but i think y is dependent on x value
if x=1 then y=3*1+6 = 9
else if x=2 then y=3*2+6 = 12
other wise if are calculating x based in y then x will be dependent and y will be controlling:
ex: x=(y-6)/3
and |||In this instance, the control variable is the independent variable(s).
The dependent variable is the time spent by the child.|||Control variables are something that remains fixed and you cannot change.
Dependant variables are ones which you can change and they are the ones which are varied in order for you to draw conculsions.
For example, you cannot change someone's gender, race or education (at least not without a great deal of work) and therefore they are control variables as they remained fixed.
Things like how much TV a child watches can be changed and therefore is a dependant variable. Not all children will watch the same amount of TV even if they their control variables are similar or the same and therefore conclusions can be drawn.
I knwo I haven't explained it very well, but I am from a laboratory background. Basically we use control variables to ensure the experiment can be replicated, and the dependant variables are things we alter in order to see what effect they have on the experiment.
For social studies it is less clear cut as you are gathering information and not actually changing anything.|||Control variables are the variables that are not changed throughout the trials in an experiment. They are kept constant to minimize the effects of the outcome and are used as a comparison. Dependent variables are the variables that change in response to an independent variable (a variable that is manipulated). In this study, the dependent variable is how much television a child watches. The independent variable is not stated in the question so the objective of the experiment is not clear, but an example could be age. The control variables are gender, race, and education because in order to perform a controlled experiment, all other variables must be kept the same so you can be sure that the independent variable is then one affecting the outcome.
The dependent variable is dependent on the independant variable,
so if you have y=3x+6
x is the dependent variable, as if you make y=1 then 1*3+6=9
so x depends on the value of y|||Above answer is true upto some extent but i think y is dependent on x value
if x=1 then y=3*1+6 = 9
else if x=2 then y=3*2+6 = 12
other wise if are calculating x based in y then x will be dependent and y will be controlling:
ex: x=(y-6)/3
and |||In this instance, the control variable is the independent variable(s).
The dependent variable is the time spent by the child.|||Control variables are something that remains fixed and you cannot change.
Dependant variables are ones which you can change and they are the ones which are varied in order for you to draw conculsions.
For example, you cannot change someone's gender, race or education (at least not without a great deal of work) and therefore they are control variables as they remained fixed.
Things like how much TV a child watches can be changed and therefore is a dependant variable. Not all children will watch the same amount of TV even if they their control variables are similar or the same and therefore conclusions can be drawn.
I knwo I haven't explained it very well, but I am from a laboratory background. Basically we use control variables to ensure the experiment can be replicated, and the dependant variables are things we alter in order to see what effect they have on the experiment.
For social studies it is less clear cut as you are gathering information and not actually changing anything.|||Control variables are the variables that are not changed throughout the trials in an experiment. They are kept constant to minimize the effects of the outcome and are used as a comparison. Dependent variables are the variables that change in response to an independent variable (a variable that is manipulated). In this study, the dependent variable is how much television a child watches. The independent variable is not stated in the question so the objective of the experiment is not clear, but an example could be age. The control variables are gender, race, and education because in order to perform a controlled experiment, all other variables must be kept the same so you can be sure that the independent variable is then one affecting the outcome.
What is a control group, experimental group, independent variable, dependent variable?
I am doing an experiment to see whether my bearded dragon is instinctively drawn to either crickets or fruits and veggies. What is the control group, experimental group, independent variable and dependent variable?|||do a different experiment. to do an experiment like that with only one subject would take too much time.
How to control a variable speed dc motor using microcontroller?
i want to make a working model of dc motor controlled boat using microcontroller and also want to make it remote controlled,if possible...can you give any suggestion ?|||Just change voltage.|||You can't just change the voltage, that would mean increasing the current, which would lead to heating up the motor. The best method to use, especially with the microcontrollers is to use PWM. with an H-Bridge or an H-Bridge IC such as the L292 or the L298. Please look up PWM on Wiki.
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What would our dependent variable and control be??
My friend and i are doing a science project on if color affects taste or not. We are going to have random people taste three drink (a,b and c) and tell us what each one taste like. drink A will be sprite with purple food coloring(grape), drink B will be sprite with orange food coloring(orange) and drink C will be plain sprite. What would our dependent variable and control be???
thx! leave a link to your Qs and I'll answer :D|||What people think of the taste= dependent variable- what is expected to change
sprite= control- what is kept the same|||Dependent= different tastes
Control=plain sprite|||Your control would be the the plain sprite.
Your dependent variable would be the flavor of the soda and people's response to the drinks.
;)|||You have an independent and a dependent variable and a control.
Your independent variable is the coloring and the flavor of each drink. The dependent variable is the person's response to your question.
The control is the Sprite with no food coloring.
thx! leave a link to your Qs and I'll answer :D|||What people think of the taste= dependent variable- what is expected to change
sprite= control- what is kept the same|||Dependent= different tastes
Control=plain sprite|||Your control would be the the plain sprite.
Your dependent variable would be the flavor of the soda and people's response to the drinks.
;)|||You have an independent and a dependent variable and a control.
Your independent variable is the coloring and the flavor of each drink. The dependent variable is the person's response to your question.
The control is the Sprite with no food coloring.
What is the independent and dependent variable, control and constant of this experiment?
Your friend tells you that there is a new pill called "Short-B-Gone". It is supposed to make people taller if they take it every day for 10 days, You decide to conduct an experiment on it. You have 5 people take "Short-B-Gone" and label them group A. you have 5 other people take a normal vitamin and label them group B. After 10 days,group A grows an average of 4 cm and group B shows no growth at all.|||independent: pill vs no pill. This is what the researcher changed on purpose to see how it will effect the results of the study
dependent: height. This is the outcome of the study which has to be measurable (measured by ruler in cm)
control group: Those who took the vitamins
constant: same number of pills taken, taken every 10 days, should have people of the same height.
dependent: height. This is the outcome of the study which has to be measurable (measured by ruler in cm)
control group: Those who took the vitamins
constant: same number of pills taken, taken every 10 days, should have people of the same height.
What is the experimental control and variable in this experiment?
Three different brands of tissues of same size were dropped in 5ml of water. I do not understand what's the experimental control and experimental variable. Is the experimental control and control group the same thing?|||It would help if you could tell us what the experiment is. It looks like the variable is the tissue, as there are three kinds which might behave differently in the one constant medium which is water.
Therefore, water is the experimental control, and tissues are the variable.
"While all experiments have an experimental group, not all experiments require a control group. Controls are extremely useful where the experimental conditions are complex and difficult to isolate. Experiments that use control groups are called controlled experiments."
I'd just like to add that your pug picture drew me to answer this question. I love pugs n have a male 3yr old of my own :)
Therefore, water is the experimental control, and tissues are the variable.
"While all experiments have an experimental group, not all experiments require a control group. Controls are extremely useful where the experimental conditions are complex and difficult to isolate. Experiments that use control groups are called controlled experiments."
I'd just like to add that your pug picture drew me to answer this question. I love pugs n have a male 3yr old of my own :)
What is the difference between the control variable and the variable and the dependent & independent variable?
1. Control variable means--
2. Variable means--
AND
3. Independent variable--
4. Dependent variable--
how are they different also?|||These words are different in science than in math although they have the same idea they are not the same.
1. Control Variable..are those variables that are not changed throughout the trials in an experiment because the experimenter is not interested in the effect of that variable being changed for that particular experiment, for a scientific experiment, the control variable never changes.
2. Variable... is a symbolic number, letter which holds a certain value, the variable often represents the unknown
3.Independent variable... is the variable which can be manipulated. The independent variable is able to stand on its own.
3. Dependent Variable... Is the uncertain variable, and its outcome relies on the independent variables reaction.
2. Variable means--
AND
3. Independent variable--
4. Dependent variable--
how are they different also?|||These words are different in science than in math although they have the same idea they are not the same.
1. Control Variable..are those variables that are not changed throughout the trials in an experiment because the experimenter is not interested in the effect of that variable being changed for that particular experiment, for a scientific experiment, the control variable never changes.
2. Variable... is a symbolic number, letter which holds a certain value, the variable often represents the unknown
3.Independent variable... is the variable which can be manipulated. The independent variable is able to stand on its own.
3. Dependent Variable... Is the uncertain variable, and its outcome relies on the independent variables reaction.
What is the control variable when nails become rusty when exposed to water?
amount of water %26amp; time spent in water would work, maybe=control group
but the nails not exposed to water are the control variable, makes sure on which one you need...|||A nail that is not exposed to water, as your control to show what would happen if you didn't let it react with water.|||Nails not exposed to water.
but the nails not exposed to water are the control variable, makes sure on which one you need...|||A nail that is not exposed to water, as your control to show what would happen if you didn't let it react with water.|||Nails not exposed to water.
I need help identifying control group, independent variable and dependent variables?
I'm having trouble figuring out the Control Group, Independent variable and dependent variable for
The Effect Aging has on Driving Reaction Time. Could someone help me and explain how they are the control group, independent variable etc.|||ind: age
dependent: reaction time
control: there technically could be no control because no one stays the same age forever.
The Effect Aging has on Driving Reaction Time. Could someone help me and explain how they are the control group, independent variable etc.|||ind: age
dependent: reaction time
control: there technically could be no control because no one stays the same age forever.
What is my control and variable?
My experiment is to observe if all sodas have the same effect on plants
what is the control and variable for this experiment?|||For your case, control is using the same plant.
Variable is using different kinds of soda.
Effect on the plants is your observation.|||controll is what you can controll
and variable is what you change...something that is diffrent everytime
what is the control and variable for this experiment?|||For your case, control is using the same plant.
Variable is using different kinds of soda.
Effect on the plants is your observation.|||controll is what you can controll
and variable is what you change...something that is diffrent everytime
What is the independant variable, dependant variable and control in this experiment?
Does hot water or cold water freeze faster?
Well i need the independant, dependant and control for this experiment as I don't know anything about the experiment. Can any scientists please lend me a hand!|||The independent variable is typically the variable representing the value being manipulated or changed and the dependent variable is the observed result of the independent variable being manipulated
so the independent variable is the temperature of the water at the beginning
the dependent variable is time that the experiment takes for each of the different temperatures
you have not actually listed a control, you have listed 2 options hot, or cold water, a control could be room temperature water, however that would not make for a good experiment because you are not defining hot and cold.
You have not listed other values that might be held constant for instance pressure: at increased pressure you can get ice to become water, so if you decrease pressure it is possible to have water go to ice. (look into the triplet point for more information)
similarly with out pressure held constant it is possible to have 2 samples at the same temperature but one be ice while the other is water.
I guess what I am trying to say is that "hot" and "cold" are not very good scientific terms.
Well i need the independant, dependant and control for this experiment as I don't know anything about the experiment. Can any scientists please lend me a hand!|||The independent variable is typically the variable representing the value being manipulated or changed and the dependent variable is the observed result of the independent variable being manipulated
so the independent variable is the temperature of the water at the beginning
the dependent variable is time that the experiment takes for each of the different temperatures
you have not actually listed a control, you have listed 2 options hot, or cold water, a control could be room temperature water, however that would not make for a good experiment because you are not defining hot and cold.
You have not listed other values that might be held constant for instance pressure: at increased pressure you can get ice to become water, so if you decrease pressure it is possible to have water go to ice. (look into the triplet point for more information)
similarly with out pressure held constant it is possible to have 2 samples at the same temperature but one be ice while the other is water.
I guess what I am trying to say is that "hot" and "cold" are not very good scientific terms.
Need help identifying the independent and dependent variable and the control in this experiment?
The experiment is "Do plants grow better under sunlight, artificial light or no light?"
I have no idea what the independent and dependent variable and the control is.
Please help!
BEST ANSWER 10 PTS!
Thanks in advance
:D|||Independent variable: Real, artificial, and no sunlight.
Dependent variable: If the plants grow better.
Control group would be the group with the no sunlight.
Independent variable is the thing that you can control. In this case, it's the sunlight.
Dependent variable is something you can measure. In this case, you can measure the growth of the plant.
Control refers to the control group. Control group is the group that is not exposed to any independent variables. Therefore, the group with no sunlight is the control group.
Cheers!|||Independent: Type of light
Dependent: Plant growth
Control: You want to test that the plants aren't simply defective if they don't grow, so I would put sunlight since that's their natural light source, but I'm really not sure about this one.
I have no idea what the independent and dependent variable and the control is.
Please help!
BEST ANSWER 10 PTS!
Thanks in advance
:D|||Independent variable: Real, artificial, and no sunlight.
Dependent variable: If the plants grow better.
Control group would be the group with the no sunlight.
Independent variable is the thing that you can control. In this case, it's the sunlight.
Dependent variable is something you can measure. In this case, you can measure the growth of the plant.
Control refers to the control group. Control group is the group that is not exposed to any independent variables. Therefore, the group with no sunlight is the control group.
Cheers!|||Independent: Type of light
Dependent: Plant growth
Control: You want to test that the plants aren't simply defective if they don't grow, so I would put sunlight since that's their natural light source, but I'm really not sure about this one.
Control group/ experimental & control variable of my experiment?
I'm doing my science project on batteries which is Energizer and Duracell, which battery would last longer in a flashlight. Can someone explain to me what a control group is, what an experimental variable is, and what a control variable is? Thanks for the help you guys :]|||You are conducting a binary or discrete experiment.
The experimental variable is the time that the battery remains lit with a particular battery.
You can define the "control group" as either the value with Energizer or the value with Duracell or else the average value of Energizer and Duracell. If you do the latter, you need to make sure that you test an equal number of Energizer and Duracell batteries.
The control group is the base value and you are testing to see if the value for your experimental subject is the same or different from the base value to a degree of statistical significance.
The control variable is which battery type you are using.|||That doesn't help at all
The experimental variable is the time that the battery remains lit with a particular battery.
You can define the "control group" as either the value with Energizer or the value with Duracell or else the average value of Energizer and Duracell. If you do the latter, you need to make sure that you test an equal number of Energizer and Duracell batteries.
The control group is the base value and you are testing to see if the value for your experimental subject is the same or different from the base value to a degree of statistical significance.
The control variable is which battery type you are using.|||That doesn't help at all
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What is a variable and control ?
ok, so i am doing a science experiment.
and it requires an independent, dependent and control.
the experiment is:
what are the factors of solubility and the rates of disolvability.
i am using mints and testing them under hot water. crushed and stirred. now i need to know the variables and control ?
please help me :)
thankyou so much
P.S. im only in year nine. so can i please just have simple, paragraphed answers.|||First of all, it depends on your problem. For this, I will use: In which temperature will the mints dissolve the fastest?
Explanation of terms/variables:
Independent variable: Also called manipulated variable. It is the variable you want to test. For example: temperature of water. You want to know in which temperature can the mints dissolve the fastest: hot, warm or cold?
Controlled variable: Something that is not changed throughout the experiment. In your case, it is the size of the mint, type of mint, amount of water, etc. You keep them controlled or unmanipulated so that it would not influence the results of your experiment. Remember that the problem is the rate of solubility in different temperatures. You wouldn't want to put in a smaller mint becasue it will definitely dissolve faster but not because of the temperature.
Dependent variable: It depends on the independent variable. In other words, it is the result. For example, you observed that the mint dissolved faster in hot water.
Sorry. I'm not good at explaining things. Maybe this will help:
http://www.cool-science-projects.com/ind鈥?/a>
and it requires an independent, dependent and control.
the experiment is:
what are the factors of solubility and the rates of disolvability.
i am using mints and testing them under hot water. crushed and stirred. now i need to know the variables and control ?
please help me :)
thankyou so much
P.S. im only in year nine. so can i please just have simple, paragraphed answers.|||First of all, it depends on your problem. For this, I will use: In which temperature will the mints dissolve the fastest?
Explanation of terms/variables:
Independent variable: Also called manipulated variable. It is the variable you want to test. For example: temperature of water. You want to know in which temperature can the mints dissolve the fastest: hot, warm or cold?
Controlled variable: Something that is not changed throughout the experiment. In your case, it is the size of the mint, type of mint, amount of water, etc. You keep them controlled or unmanipulated so that it would not influence the results of your experiment. Remember that the problem is the rate of solubility in different temperatures. You wouldn't want to put in a smaller mint becasue it will definitely dissolve faster but not because of the temperature.
Dependent variable: It depends on the independent variable. In other words, it is the result. For example, you observed that the mint dissolved faster in hot water.
Sorry. I'm not good at explaining things. Maybe this will help:
http://www.cool-science-projects.com/ind鈥?/a>
What is a control and variable in an experiment?
i am doing and experiment with sodas, glass and nails. which is the variable?|||A control is an experiment that you go off of. Like if you are testing different plant fertilizers, the control would be an unfertilized plant. In your case, the control would be just a nail in a glass, which we all know wouldn't deteriorate and so you don't really need a control. It wouldn't hurt to through it in there though.
The variable would be your different sodas. As long as the nails and glasses all stayed the same, they wouldn't affect the experiment.
So say you have Diet Coke, Coke, Pepsi, Mountain Dew, and other sodas. If you poured the exact same amount into different glasses, all with the same shape and same size of nail, the soda would be the only thing changing from experiment to experiment. Thus they would be the variables.|||Whichever you want to be the variable.
Typically, you try to find a relationship between two measurable quantities.
The one you adjust is called the control, or "independant variable"
This typically affects the other quantity, which is known as the "dependant variable".
Assuming by "soda" you mean carbonated beverage (pop or soft drink); and by "glass" you mean a "tumbler" or other stemware; and by "nail" you mean a metal fastener, then you could do the following experiments:
1) find the ratio of volume of liquid to height of liquid with respect to the diameter of the glass. Diameter is one control. Either volume or height could be another control, and whichever you choose as the control, means the other is the dependant variable.
2) find how long it takes a nail to dissolve in a glass of pop. Controls: mass or length of nail, pH of pop, temperature of pop, volume of pop, nail material (iron, copper, etc). Dependant variables: time to dissolve.
3) determine the "packing fraction" of a glass full of nails. Calculate the volume of the glass from it's measurements. Fill it with nails. Add pop, until full. Empty pop, carefully measuring it's volume. Subtract from volume of glass to get volume of nails. Divide volume of nails by volume of glass to get packing fraction. Choose a different type of nail, and repeat. Nail type = control, or independant variable. Packing fraction = dependant variable.
The variable would be your different sodas. As long as the nails and glasses all stayed the same, they wouldn't affect the experiment.
So say you have Diet Coke, Coke, Pepsi, Mountain Dew, and other sodas. If you poured the exact same amount into different glasses, all with the same shape and same size of nail, the soda would be the only thing changing from experiment to experiment. Thus they would be the variables.|||Whichever you want to be the variable.
Typically, you try to find a relationship between two measurable quantities.
The one you adjust is called the control, or "independant variable"
This typically affects the other quantity, which is known as the "dependant variable".
Assuming by "soda" you mean carbonated beverage (pop or soft drink); and by "glass" you mean a "tumbler" or other stemware; and by "nail" you mean a metal fastener, then you could do the following experiments:
1) find the ratio of volume of liquid to height of liquid with respect to the diameter of the glass. Diameter is one control. Either volume or height could be another control, and whichever you choose as the control, means the other is the dependant variable.
2) find how long it takes a nail to dissolve in a glass of pop. Controls: mass or length of nail, pH of pop, temperature of pop, volume of pop, nail material (iron, copper, etc). Dependant variables: time to dissolve.
3) determine the "packing fraction" of a glass full of nails. Calculate the volume of the glass from it's measurements. Fill it with nails. Add pop, until full. Empty pop, carefully measuring it's volume. Subtract from volume of glass to get volume of nails. Divide volume of nails by volume of glass to get packing fraction. Choose a different type of nail, and repeat. Nail type = control, or independant variable. Packing fraction = dependant variable.
What would be your casual definition for control variable?
For science. I already have one but its just for control.. but i think its the same thing.... here it is,
"The one part of the experiment that everything else is compared to"
is that right!?|||That's a reasonable casual definition. Another is, "The one part of the experiment that controls the outcome."|||In any experiment, you typically have multiple variables in play. In order to determine the behavior of what your are studying, you will keep some variables constant while you vary the other(s). Those variables you keep constant are the control variables.
"The one part of the experiment that everything else is compared to"
is that right!?|||That's a reasonable casual definition. Another is, "The one part of the experiment that controls the outcome."|||In any experiment, you typically have multiple variables in play. In order to determine the behavior of what your are studying, you will keep some variables constant while you vary the other(s). Those variables you keep constant are the control variables.
What would be the control, independent variable, and dependent variable in the following experiment?
I want to drop a crumpled and uncrumpled piece of paper at the same time? Which will fall to the ground first? |||Independent variable is the crumpled vs uncrumpled.
Dependent variable is the rate they fall to the floor.
You don't have a control. |||control group could be dropping a rock. dependent variable is time it takes to drop, independent variable is crumpled and uncrumpled|||What an exciting experiment! Let me know the brilliant conclusion!
Dependent variable is the rate they fall to the floor.
You don't have a control. |||control group could be dropping a rock. dependent variable is time it takes to drop, independent variable is crumpled and uncrumpled|||What an exciting experiment! Let me know the brilliant conclusion!
What is the control, indepedent variable, and dependent variable?
We want to add 10 milliliters of Listerine to 300 milliliters of water, and put some fresh flowers in that vase. Then, in another vase, we鈥檒l have fresh flowers in regular water, and see which flower lasts the longest.
a. Control: The ability to stay fresh.
b. Independent: The flowers in the Listerine mouthwash.
c. Dependant: The flowers in the water.
Is the above stated correct?|||No, I don't think so.
We were told "control" was the "control condition", which would then be the results from the vase with the normal water.
Your IV (Independent variable) is: The Listerine
Your DV (Dependent variable) is: The freshness of the plants.
The independent variable is the one that you manipulate in order to see the results on the dependent variable. The dependent variable must not be changed at all.
For an example, if I was to test two people's anger, and I punch one of them before, the IV is the punch and the DV is the level of anger.|||It's not correct.
Here's the right one:
Control (original setup): regular water
Independent (cause): 10 milliliters of Listerine
Dependent (effect/presumed effect or the one affected or changed): vase with water
*Dependent variable - changes automatically during the experiment when the Independent Variable is changed
that's it :)|||no, the indepedent is the flowers and depedent is flower last longer|||http://www.uncp.edu/home/collierw/ivdv.h鈥?/a>
a. Control: The ability to stay fresh.
b. Independent: The flowers in the Listerine mouthwash.
c. Dependant: The flowers in the water.
Is the above stated correct?|||No, I don't think so.
We were told "control" was the "control condition", which would then be the results from the vase with the normal water.
Your IV (Independent variable) is: The Listerine
Your DV (Dependent variable) is: The freshness of the plants.
The independent variable is the one that you manipulate in order to see the results on the dependent variable. The dependent variable must not be changed at all.
For an example, if I was to test two people's anger, and I punch one of them before, the IV is the punch and the DV is the level of anger.|||It's not correct.
Here's the right one:
Control (original setup): regular water
Independent (cause): 10 milliliters of Listerine
Dependent (effect/presumed effect or the one affected or changed): vase with water
*Dependent variable - changes automatically during the experiment when the Independent Variable is changed
that's it :)|||no, the indepedent is the flowers and depedent is flower last longer|||http://www.uncp.edu/home/collierw/ivdv.h鈥?/a>
Monday, December 12, 2011
What is the CONTROL, Independent & dependant variable of a science project?
i have a science project on which evaporates faster: Distilled water, sugar water, or salt water.
For my presentation i need to know what the CONTROL, Independent, and dependent variables are. thanks for your help ;]|||The control is your Distilled Water (because it contains just water)
Dependent variables are those that are observed to change in response to the independent variables (time taken to evaporate).
The independent variables are those that are deliberately manipulated to invoke a change in the dependent variables. (Type of ingredient used)|||Control: Distilled water
The independent variables don't rely on anything to perform, however dependent variables do. I would say that sugar and salt water would be independent variables.
For my presentation i need to know what the CONTROL, Independent, and dependent variables are. thanks for your help ;]|||The control is your Distilled Water (because it contains just water)
Dependent variables are those that are observed to change in response to the independent variables (time taken to evaporate).
The independent variables are those that are deliberately manipulated to invoke a change in the dependent variables. (Type of ingredient used)|||Control: Distilled water
The independent variables don't rely on anything to perform, however dependent variables do. I would say that sugar and salt water would be independent variables.
Definitoin of independent variable, dependent variable, and control variable?
what is the definition of independent variable, dependent variable, and control variable?|||Independent Variable- the manipulated variable; the variable that is changed on purpose in an experiment
Dependent Variable- variable that is not under the experimenter's control -- the data. It is the variable that is observed and measured in response to the independent variable
Control Variable- A variable that is held constant or whose impact is removed in order to analyze the relationship between other variables without interference, or within subgroups of the control variable|||an independent variable is the variable that u cannot control, such as time, volume, etc.
dependent variable is the variable that depends on another variable. usually something like "amount of rainfall" or something.
control variable is the variable that u can control...such as temperature, amount of heat, etc.
for more elaborate definitions, go to dictionary.com|||I HAVE THE SAME CLASS DUDE! I HATE THAT STUFF!!!|||An indep. variable is one that varies on its own without being dependent on anything else.
age,
Dependent variable is one whose variation is dependent on another variable.
demand depends on supply. income depends on years of education (if you assume so) etc.
Dependent Variable- variable that is not under the experimenter's control -- the data. It is the variable that is observed and measured in response to the independent variable
Control Variable- A variable that is held constant or whose impact is removed in order to analyze the relationship between other variables without interference, or within subgroups of the control variable|||an independent variable is the variable that u cannot control, such as time, volume, etc.
dependent variable is the variable that depends on another variable. usually something like "amount of rainfall" or something.
control variable is the variable that u can control...such as temperature, amount of heat, etc.
for more elaborate definitions, go to dictionary.com|||I HAVE THE SAME CLASS DUDE! I HATE THAT STUFF!!!|||An indep. variable is one that varies on its own without being dependent on anything else.
age,
Dependent variable is one whose variation is dependent on another variable.
demand depends on supply. income depends on years of education (if you assume so) etc.
What would be the Control, Dependent, and Independent Variable?
If i was to do a science project about how long it takes for different shapes of ice to melt, what would be the control, dependent, and independent Variable?|||controlled: the initial temperature of the ice, shape of ice
dependent: time it takes ice to melt
independent: the ice melting?
dependent: time it takes ice to melt
independent: the ice melting?
What is a control, independant and dependant variable in science experiments?
Can you explain to me what are:
Indepedant variables
Dependant variables
a control
and why a control is necessary
thanks|||The dependent variable is your outcome measure, that is "dependent" on the influence of the independent variables. For example, "the height of a plant after 30 days (dependent variable), as affected by the (independent) variables: hours of sunshine per day, quantity of water per day, and amount of fertilizer per day".
A control is necessary as a reference against which you compare your experimental group. So, for the same example, your hypothesis is that increasing the number of hours of sunshine will affect plant growth, and you will measure this by the height of the plant after 30 days. The control group would get a standard light exposure, and your experimental group would get more light exposure. After 30 days, you would compare the plant height in the control group against the plant height in the experimental group.
The regression equation looks at the combined influence of the independent variables (sun, water, fertilizer) on the dependent variable (plant height). A regression equation tells you if the plant height is a function of these variables, and also helps you determine which variable has the greatest effect on plant height.
Indepedant variables
Dependant variables
a control
and why a control is necessary
thanks|||The dependent variable is your outcome measure, that is "dependent" on the influence of the independent variables. For example, "the height of a plant after 30 days (dependent variable), as affected by the (independent) variables: hours of sunshine per day, quantity of water per day, and amount of fertilizer per day".
A control is necessary as a reference against which you compare your experimental group. So, for the same example, your hypothesis is that increasing the number of hours of sunshine will affect plant growth, and you will measure this by the height of the plant after 30 days. The control group would get a standard light exposure, and your experimental group would get more light exposure. After 30 days, you would compare the plant height in the control group against the plant height in the experimental group.
The regression equation looks at the combined influence of the independent variables (sun, water, fertilizer) on the dependent variable (plant height). A regression equation tells you if the plant height is a function of these variables, and also helps you determine which variable has the greatest effect on plant height.
In statistics, how do you control for a variable?
If I have 4 variables, 3 of which influence the fourth, how do I control for a variable and determine its effect on the fourth variable?|||Let's say you have four (random) variables x, y, z, and w. suppose there was a relationship beween w and y, for example, say w=ay +b. (y could represent a companies cost of raw meat and w the the price of that meat cooked to order.) That formula then says that if we know the price of the raw meat then we know the price that establishment will charge for the cooked order. So the charge of the cooked order controlled on the cost of the raw meat, w|y, verbalized as "w given y" or "w controled on y" is then w|y=ay+b. In statistics we very often control on certain variables where there is a known relationship and compute (integrate or find the expected value) that relationship across the unknow variables.
Why is control variable so important to the scientific method?
because if there was no control you wouldn't be able to accurately determine you results|||welcome to our website:
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What would be the control, independent and dependent variable?
im doing an science experiment for science fair due in 2 weeks. my topic that im doing is, does it matter what colors are in a image in order to create a afterimage? How long does an afterimage last? How long does it take to occur? Im testing 10 different people, using the same images, each image is different in which the colors are different. So,... what would be my control, independent and dependent variable?|||Your control would have no color and see if there is an after image
Your independant variable is color
and the dependant variable is the afterimage... thats for just changing color.
Your independant variable is color
and the dependant variable is the afterimage... thats for just changing color.
What is the independent and dependent variable, control, and constant of this experiment?
Gatorade decides to create a new drink called "Energy" that they say gives people extra energy while running. To test this claim, they give 20 people the "Energy" drink before a mile run (they are Group A). They give 20 other people water before their mile run (call them Group B0.Group A runs the mile in 9 minutes while Group B takes 9.45 minutes.|||dependent variable = amount of energy
independent variable = time taken to run a mile
control = group B
constant = group B
independent variable = time taken to run a mile
control = group B
constant = group B
What is the control group, independent variable, and the dependent variable in an experiment?
i have no idea what those things are.. here is an example of an experiment:
Smithers thinks that a special juice will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case they're stapling). Group A is given the special juice to drink while they work. Group B is not given the special juice. After an hour, Smithers counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks.
what is the control group?
independent variable?
and the dependent variable?|||Control group - Group B.
Independent variable - n/a
Dependent variable - how many stacks of paper
Smithers thinks that a special juice will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case they're stapling). Group A is given the special juice to drink while they work. Group B is not given the special juice. After an hour, Smithers counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks.
what is the control group?
independent variable?
and the dependent variable?|||Control group - Group B.
Independent variable - n/a
Dependent variable - how many stacks of paper
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