Students wanted to know if levels of anxiety were affected by the amount of time spent on social media. What would be the control group in this experiment?

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 dependent variable in this experiment?

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

Students wanted to know if the temperature of the water had an effect on the strength of a hurricane. What would be a correct hypothesis for this experiment?

Students wanted to know if the temperature had an effect on the strength of a magnet. They tested one magnet at a high temperature, one at a low temperature, and one at room temperature. What would be the control?

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?

A student wanted to know how the length of a guitar string would affect the pitch. What would be IV in this experiment?

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

I normally use regular unleaded gas, and I was wondering if I used a different type of gas, ( Premium Unleaded or Diesel), if that would affect the amount of pollution my car produced. What would be the control in this experiment?

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

A student wanted to know if the distance a golf ball travels after being hit is affected by the height of the tee. What would be IV in this experiment?

A student wanted to know if increasing the amount of baking soda would affect how much the cake rises when baked. How would you write a hypothesis for this experiment using the IF/THEN format?