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.

Example Input: Question: If Mona is observing two objects and she realizes that one has a smaller mass then the other, what does that tell her about that object's thermal energy? 
 Answer: it's smaller
Example Output: An object with more mass has greater thermal energy than an object with less mass because it has more atoms.

Example Input: Question: While in the lab, Sharon and Joe were testing alkenes; Sharon's alkenes were much larger than Joe's. The melting point of Sharon's alkenes will be _____ than Joe's. 
 Answer: lower
Example Output: Larger alkenes have lower boiling and melting points.

Example Input: Question: If Milo is listening to the radio in his room and the room gets colder, what happens to the speed of the sound waves generated by the radio? 
 Answer: decrease
Example Output:
For a given medium, sound waves travel more slowly at lower temperatures.