You think that a certain part of your brain is important in memory. To test this, you will remove this part of the brain from rats and see if they remember how to get through the maze. What is the independent variable in this experiment?

You want to test a new drug that supposedly prevents sneezing in people allergic to grass. What is the independent variable?

You want to see if playing music makes plants grow taller. What is the independent variable in this experiement?

You want to test a new drug that supposedly prevents sneezing in people allergic to grass. What is the dependent variable?

A soap manufacturer wants to prove that their detergent works better to remove tough stains. What is the dependent variable?

An entomologist (bug scientist) wants to determine if temperature changes how many times a cricket chirps. What is the dependent variable?

You want to measure the effect of different amounts of oxygen on the rate of yeast growth. What is the independent variable?

Orchids were studied to determine if the amount of humidity affected the flowering of these plants. Which of these was the independent variable in this study?

Ms. Fiore wanted to see how different types of music affected students' pulse rates. She played different types of music: heavy metal, rap, R&B, alternative, pop, country, and classical music. Identify the dependent variable.

Jakub studied how far room temperature water would spurt out of a platic milk carton when 3mm holes were punched at different heights from the bottom of the container. Identify a constant.

The higher the temperature of the air in the oven, the faster a cake will bake. Which would NOT be a constant?

Students of different ages were given the same puzzle to assemble. The puzzle assembly time was measured. What would be a constant?

An experiment was performed to determine how the amount of coffee grounds could affect the taste of coffee. The same kind of coffee, the same coffee maker, and the same amount of water were used. Which would NOT be a constant?

Two groups of students were tested to compare their speed working math problems. Each group was given the same problems. One group used calculators and the other group computed without calculators. What is your control?