What's an independent and dependent variable

Answer:Independent Variable

A variable that you (the scientist) changes and you have control over. The factor being tested in an experiment.

Dependent Variables

Factor (s) that change in response to other factors. It's what your measuring in your experiment to see whether or not the independent variable made an impact. This is what the scientist focuses their observations.

one is control in scientific experiment while the other is being tested

Explanation:

The two main variables in an experiment are the independent and dependent variable. An independent variable is the variable that is changed or controlled in a scientific experiment to test the effects on the dependent variable. A dependent variable is the variable being tested and measured in a scientific experiment.