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: Ron watches a wave for 10 seconds and notices 10 crests. He watches another wave for 10 seconds and sees 5 crests. Which wave has a greater frequency? 
 Answer: 10 crests
answer:
Wave frequency can be measured by counting the number of crests or compressions that pass the point in 1 second or other time period. The higher the number is, the greater is the frequency of the wave.


question:
Question: If a device were to become less efficient, it would produce _____ usable energy. 
 Answer: less
answer:
The more efficient a device is, the greater the percentage of usable energy it produces.


question:
Question: If Milo is travelling underground and he moves deeper into the Earth, what happens to the pressure around him? 
 Answer: increases
answer:

Pressure: Pressure increases with depth, but increased pressure raises the melting temperature, so melting of rock is less likely to occur at higher pressures.