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.
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Question: 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

Answer: 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.


Question: Question: Simon was digging in his yard and found that the rocks that were shallower in the ground, compared to the surface rocks, were likely 
 Answer: younger

Answer: Therefore, deeper rock layers must be older than layers closer to the surface.


Question: Question: A piece of granite is more resistant than soapstone therefore it will last 
 Answer: longer

Answer:
Different types of rocks weather at different rates. More resistant types of rocks will remain longer.