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.


[Q]: Question: Would it be easier to push a block up a 
 Answer: shallow slope
[A]: The more gradual the slope of the inclined plane, the less input force is needed and the greater the mechanical advantage.


[Q]: Question: A wave with a low frequency has _____ energy than a wave with a high frequency. 
 Answer: less
[A]:
Higher frequency waves have greater energy.