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.
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