Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.

[EX Q]: Question: How high or low a sound seems is associated with what property of the sound? Answer: pitch
[EX A]: How high or low a sound seems to a listener is its pitch. Pitch, in turn, depends on the frequency of sound waves.

[EX Q]: Question: A statement is considered what if it is open to being falsified? Answer: hypothesis
[EX A]: At a given temperature, individual particles of a substance have a range of kinetic energies.

[EX Q]: Question: What occurs when water on the surface changes to water vapor? Answer: evaporation
[EX A]:
Evaporation occurs when water on the surface changes to water vapor. The sun heats the water and gives water molecules enough energy to escape into the atmosphere.