Scientific Variables

Independent Variables Something that is changed by the scientist What is tested Also known as the manipulated variable

Dependent Variable Something that might be affected by the change in the independent variable What is observed What is measured Also known as the responding variable

Controlled Variable A variable that is not changed Kept the same through the experiment Also known as a constant

Identify the Variables! Ms. Moore wants to see if changing the amount of water added to peony plants will produce more roses. She uses the same type of peony plant, food and amount of sunlight during the experiment. Independent Variable Amount of water Dependent Variable Amount of roses produced Constant Food, plants, soil