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.
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