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Q: An experiment that tests only one factor or variable at a time is called what?
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Experiments that involve two tests that are identical except for one factor?

A controlled experiment involves two tests that are identical except for one factor, which is the independent variable. The effect of the independent variable is the one being tested.


In an experiment a group that is identical to a control group except for one factor and that is compared with the control group?

a controlled experiment is an experiment that tests only one factor at a time by using a control group and experimental group


The most difficult part of an experiment is designing an experiment that tests only one factor?

The most difficult part of an experiment is designing an experiment that tests only one factor.


What is a Control and a constant in elementary science terms?

A control in science is in an experiment that makes sure the science experiment only tests one variable. A constant is in an experiment and that is a variable that never changes.


Tests only one factor at a time?

A controlled experiment


Is the most difficult part of an experiment is designing an experiment that tests only one factor.?

true


What is an independemt variable?

An independent variable is the variable in the experiment that affects the other variable. For example, in an experiment that tests the affect of the amount of fertilizer on plant growth, the amount of fertilizer is the independent variable and the plant growth is the dependent variable. This is because the plant growth DEPENDS on the amount of fertilizer.


What is conducted by performing two tests that are identical except for what factor is?

homeostasis


Is an experiment considered a controlled experiment if it contains tests with chemicals?

No, it could be one, but that does not necessarily classify it as controlled. A controlled experiment is an experiment that has only ONE independent variable, and other variables are kept the same.


A part of an experiment to which you can compare the results of other tests?

Control


What word belongs to this definition an investigation that tests only one factor at a time?

a controlled experiment


What does dependent mean in graphs?

The factor that your results or tests are "dependant" on. As in you could not get the correct experiment without it