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: As an object slows down, it will become _____. 
 Answer: cooler
At a lower temperature, particles of the medium are moving more slowly, so it takes them longer to transfer the energy of the sound waves.

Question: Milo owns two telescopes, one at the top of a mountain and one at the base. If he looks through the one at the top of the mountain, how much interference can he expect compared to the one at the bottom of the mountain? 
 Answer: less
Many observatories are built on high mountains. There is less air above the telescope, so there is less interference from the atmosphere.

Question: Penny added salt to her cup of water and noticed the water got _____. 
 Answer: thicker

If salt is added to a volume of water, there are more molecules in the same volume, so the water is denser.