What is the independent variable? Amy wanted to know which brand of popcorn will leave the least amount of kernels.

What is the dependent variable? Jake wanted to know if exercising before taking a test would help improve his test scores.

If I test different types of baseball bats, then I predict the composite bat will hit the baseball the farthest. What is the dependent variable?

I want to know if different temperatures of water will affect how high an ice cube floats. What is the dependent variable?

If I test different types of baseball bats, then I predict the composite bat will hit the baseball the farthest. What is the independent variable?

I want to know if different temperatures of water will affect how high an ice cube floats. What is the independent variable?