A student wanted to know how the amount of ice affects the rate of cooling of a glass of water. What would be the IV in this experiment?
The amount of ice
Students wanted to know which type of liquid worked best for growing beans. They watered one plant with pop, one with lemonade, and one with just water. After one week, the measured the height of each plant. What would be the control?
Water
A student wanted to know if the amount of rainfall had an effect on the volume of water traveling down a river. What would be the DV in this experiment?
Volume of water