Hypothesis
If the sponge, spoon, dish soap, and cotton balls are used to clean up an oil spill, then 80% of the spill will be cleaned up.
Independent Variable - Materials used to clean up the spill
Dependent Variable - Percentage of oil cleaned up
Controlled Variables - Initial amount of oil, initial amount of water
Independent Variable - Materials used to clean up the spill
Dependent Variable - Percentage of oil cleaned up
Controlled Variables - Initial amount of oil, initial amount of water