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 Mona is bouncing radar waves off a test car when training to be a policewoman and she notices the frequency of the waves returning to her radar gun is lower then it was before, what is happening to the car she is pointing the gun at? 
 Answer: decreasing in speed

A: A: As the car approaches the radar gun, the reflected microwaves get bunched up in front of the car. Therefore, the waves the receiver detects have a higher frequency than they would if they were being reflected from a stationary object. The faster the car is moving, the greater the increase in the frequency of the waves.
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Q: Question: Bob watched the rocket as it shoots into the sky. He sees that as the gases exiting the nozzle go slower, the rocket goes 
 Answer: slower

A: The rocket goes upwards because the hot gases shoot downwards out of the nozzle. The faster the gases go downwards, the faster the rocket goes upwards.
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Q: Question: The United states has more industry than South Korea. Therefore, there is more hazardous waste in _____. 
 Answer: the United States

A:
Nations that have more industry produce more hazardous waste.
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