Question

Denise wants to find out how the steepness of a hill's slope affects the amount of soil that erodes from it. She will use soil, a long pan, and several 4-inch-tall wooden blocks to build a model hillside. She will use a watering can to simulate rainfall. In her experiment, which factor should be Denise's independent variable?

Answer 1

Answer: The number of blocks holding up the end of the pan

Explanation: Denise wants to test how a hill's slope can affect erosion. So, the number of blocks holding up the end of the pan should be her variable.