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: If the Earth's orbit moves farther away from the Sun, what happens to the gravitational force between the two planets? 
 Answer: it decreases

A: This is because the gravitational force of attraction between the Earth and Sun is stronger when the Earth is closer to the Sun.
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Q: Question: Karen is observing an electromagnetic wave and how it travels from its source. This wave travels very far from its source, because the energy is diluted 
 Answer: more

A: However, the energy is diluted as an electromagnetic wave travels farther from its source because it spreads out over an ever-larger area.
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Q: Question: If the Earth's orbit moves closer to the Sun, what happens to the gravitational force between the two planets? 
 Answer: it increases

A:
This is because the gravitational force of attraction between the Earth and Sun is stronger when the Earth is closer to the Sun.
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