Variables, Controls & Constants

Match it! Select the correct answer from the pull down...Good luck!

What is the independent variable in this question: Does the amount of fertilizer make a plant grow taller?

Which is the control: Sue watered plant A with water; plant B with vinegar, and plant C with ammonia to find out how acids and bases affected plant growth.

Which is the constant: Sue watered plant A with water; plant B with vinegar, and plant C with ammonia to find out how acids and bases affected plant growth.

How does the shape of an ice cube affect how soon it melts? What is the dependent variable?

What is the dependent variable in this problem: what brand of gum will make the biggest bubble?

What is the dependent variable in this question: Does the amount of fertilizer make a plant grow taller?

What is the independent variable in this problem: what brand of gum will make the biggest bubble?

What is a constant you would need to have to make this a valid experiment: Does the amount of fertilizer make a plant grow taller?