instruction:
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:
Question: If Milo places his coffee into the microwave and cools it off, what will happen to the rate of vibration of the molecules in the drink? 
 Answer: decrease
answer:
Warmer molecules vibrate faster than cooler ones.


question:
Question: When you work out at the gym less your muscles become 
 Answer: smaller
answer:
Muscles that are exercised are bigger and stronger than muscles that are not exercised.


question:
Question: When a device become more efficient, its production of usable energy will go 
 Answer: up
answer:

The more efficient a device is, the greater the percentage of usable energy it produces.