Types of Science Variables

Variable Vocabulary Independent Variable: The one variable that is purposely changed by the scientist. What the scientist is testing.Dependent Variable:The variable that changes in response to the independent variable. The data being collected in the experiment, or what is being measured.Control (Constant) Variables:Variables that the scientist needs to keep the same throughout the experiments because they could cause a change if it is not controlled. They help keep the experiment "fair". Independent, Dependent, and Control Variables. Each row has an independent variable, a dependent variable, and a control variable. Fill in the table by clicking on a box to select the correct answer. Description Independent Variable Dependent Variable Control Variable Sally wants to find the hair gel that makes her hair have the most volume. Type of hair gel Volume of hair Amount of gel used Harry wants to see if eating breakfast helps him swim faster. Eating breakfast Speed of swimming Type of breakfast eaten David measures how many inches his tomato plants grow every week after giving them different types of fertilizer. Fertilizer Height Amount of fertilizer Jane questions whether the color of a plant would effect the number of bugs on it. Color Number of bugs Type of plant Jake wonders if the speed a car drive affects the mileage it gets. Speed of car Mileage Type of car