Environmental factors if you cannot control them.
Variable factors if you can control them.
See link below for easy explanation:
In an experiment the scientist is able to change the independent variable. To insure a fair test, a good experiment has only one independent variable. As the scientist changes the independent variable, he or she observes what happens. - See more at: http://www.chacha.com/question/what-part-of-an-experiment-is-the-factor-that-you-change#sthash.iyH25Jac.dpuf
In an experiment the scientist is able to change the independent variable. To insure a fair test, a good experiment has only one independent variable. As the scientist changes the independent variable, he or she observes what happens. - See more at: http://www.chacha.com/question/what-part-of-an-experiment-is-the-factor-that-you-change#sthash.iyH25Jac.dpuf
Variables.
variables
Variables that can change are called independent variables. These are the factors or conditions that researchers manipulate or observe to see how they affect other variables in an experiment or study.
In an experiment, the variables that do not change are called constants or control variables. These are aspects of the experiment that are kept consistent and not altered, providing a baseline for comparison with the variable being tested. By controlling these factors, researchers can isolate the effects of the variable they are studying.
A variable that doesn't change in an experiment is called a constant. Constants are used to ensure that only one variable is being tested for its effect on the outcome of the experiment.
The factors which you change (vary) are called variables.
changable factors
Variables
variables
In an experiment, factors that you change are called independent variables.
variables I am like 100% sure!!!!
There are different types of factors that can change in an experiment. The environmental factors may change, and are out of your control. The variables in the experiment may also be changed but, are usually controlled by the individual conducting the experiment the majority of the time.
Variables.
what are the factors that can change in an experiment
what is the factor that can change an experiment
variables
variables