EVERYDAY SCIENCE

Detailed explanation-1: -A constant variable, sometimes known as a control variable, is something you keep the same during an experiment.

Detailed explanation-2: -A control/constant variable is the variable that is constant and unchanged throughout the course of the investigation.

Detailed explanation-3: -Controlled (or constant) variables: Are extraneous variables that you manage to keep constant or controlled for during the course of the experiment, as they may have an effect on your dependent variables as well.

Detailed explanation-4: -There are three main variables: independent variable, dependent variable and controlled variables.