Dr. Eversole sets up an experiment 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?

Mr. G normally uses praise as a reward to train his dog. He wants to know the best way to train his dog, so he sets up an experiment to find out if there is a better way to get his dog to respond to commands. What is his dependent variable?

Mrs. Register sets up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the constant.

What is the dependent variable (effect) is this experiment?

"Does eating breakfast improve test score?"

What is the independent variable (cause) is this experiment?

"Which type of medium (soil or sand) is best for plant growth?"

What is the dependent variable (effect) in this experiment?

"Do tall people jump further than short people?"

What is the independent variable (cause) in this experiment?

"Which type of metal, copper or aluminum, conducts heat faster?"