In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.

Q: Question: David turns down the temperature in the cabin, so energy of sound waves is moving 
 Answer: slower

A: At a lower temperature, particles of the medium are moving more slowly, so it takes them longer to transfer the energy of the sound waves.
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Q: Question: If Milo is holding two objects close together and he decides to move them closer together, what happens to the gravitational force between the objects? 
 Answer: increases

A: The gravitational force between two objects decreases as the objects move further apart.
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Q: Question: Milo loves to dig wells for a living. If he needs to dig a well deeper to reach water, what does that do to the money and energy it takes to dig the well? 
 Answer: increases

A:
As the water is pumped out, the water table slowly falls, requiring wells to be dug deeper, which takes more money and energy.
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