In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.

Q: Question: What type of winds occur when air is forced over a mountain range? Answer: chinook winds

A: Chinook winds occur when air is forced over a mountain range.
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Q: Question: What equals the output power divided by the input power? Answer: efficiency

A: Efficiency equals the output power divided by the input power.
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Q: Question: Which process is the best example of a sudden change to Earth’s surface? Answer: landslides moving loose rocks downhill

A:
Landslides moving loose rocks downhill process is the best example of a sudden change to earth’s surface.
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