TASK DEFINITION: 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.
PROBLEM: Question: Fred found a longitudinal wave. The particles are getting further apart. The amplitude is 
 Answer: decreasing

SOLUTION: The closer together the particles in a longitudinal wave are, the greater the amplitude.

PROBLEM: 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

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

PROBLEM: Question: A bear and a fox are trying to get a piece of meat to stay frozen the longest by insulating the meat by using the heat from their bodies. Because of how thermal energy is spread, the animal who will keep the meat frozen longer is the 
 Answer: fox

SOLUTION:
Therefore, an object with more mass has greater thermal energy than an object with less mass, even if their individual atoms are moving at the same speed.