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.

Question: When waves in the ocean go fast there will be 
 Answer: more
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: Katie is looking at particles of reactants, and is noting that they currently are moving very slowly, and that they seem to have a little energy. These particles are likely at a temperature that is 
 Answer: lower
At higher temperatures, particles of reactants have more energy, so they move faster. They are more likely to bump into one another and to collide with greater force.

Question: Decker pulls some taffy as far as he can then lets it contract. The elastic potential energy of the candy would 
 Answer: decrease

The farther the object is stretched or compressed, the greater its elastic potential energy is.