Question

In this experiment, you will determine which of four variables affect the breakdown of rock samples. To do that, you will change one variable at a time and then measure the change in mass of the rock sample. In the space below, write a scientific question you will answer by doing this experiment.

Answer 1

Which of the variables affects the mass of the rock (samples)?
OR
which of the variables causes the breakdown of the rocks (samples)?

Answer 2

the sample answer they give you is  What factors influence the rate of weathering? hope this helps.