Variables.
changable factors
The factors which you change (vary) are called variables.
They are also called 'parameters'.
Variables
Factors that are kept the same in an experiment are called constants.
variables
constants.
variables I am like 100% sure!!!!
Controlled parameters
In an experiment, factors that you change are called independent variables.
Constants are factors in an experiment that stay the same. This should not be confused with controls -- which is a standard used for comparison
Extrinsic variables.