Experimental Variables

The variable that is being measured

the variable that is kept the same to make sure results are caused by the thing being tested

A student is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. What is the dependent variable?

A student is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. What is the control variable?

Mr. S set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. What is the independent variable?

Mr. S set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. What is the controlled variable?

Mr. S set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. What is the dependent variable?

Does the size of deer effect the size of its heart? What is the independent variable?

You decide to clean your bedroom. You notice that your floor is covered with clothes. You decide to try to get rid of the clothes by throwing the clothes into the air. You throw clothes from a 1/3 of the room into the closet and a second 1/3 of the room straight up in the air. The last 1/3 of the room you leave the clothes on the floor. After 30 minutes of "cleaning", the floor of the room is now visible. WHAT IS THE INDEPENDENT VARIABLE?

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, what is the independent variable?