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.

[EX Q]: Question: Don is looking at electromagnetic waves, and sees that the one's he observing have higher frequencies. Don is able to know then that the photons have energy that is 
 Answer: higher
[EX A]: In electromagnetic waves with higher frequencies, photons have more energy.

[EX Q]: Question: Eric rubs together tissue paper and then sandpaper. The rougher tissue paper has _____ friction than the sandpaper. 
 Answer: more
[EX A]: Rougher surfaces have more friction between them than smoother surfaces.

[EX Q]: Question: If Jim measures the water table of his local region before it rains and compares it to a measurement taken after it rains, it will be higher 
 Answer: after it rains
[EX A]:
The water table is higher when there is a lot of rain and lower when the weather is dry.