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.
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Question: Question: Power in electricity is the voltage multiplied by what? Answer: the current

Answer: ; Power in electricity is the voltage multiplied by the current.

Question: Question: What forces keep the moon orbiting the earth? Answer: gravitational

Answer: This photograph was taken by Apollo 8 crewmember Bill Anders on December 24, 1968, showing the Earth rising above the lunar surface. Gravitational forces keep the moon orbiting the Earth.

Question: Question: Crests and troughs are the high and low points of a what? Answer: transverse wave

Answer:
Crests and troughs are the high and low points of a transverse wave.