Waves Crossword Puzzle

Across
2.	The lowest point of a wave.
6.	The material a wave passes through.
7.	The maximum distance from the rest position that the medium moves in a wave.
8.	When a ray of light or waves change direction.
13.	Can be produced by interference.
15.	A transverse wave is made up of pure energy that can pass through a medium and empty space.
17.	The highest point in a wave.
19.	When rays of light or waves are reflected off of a surface.
20.	An up and down motion that gives a wave energy.

Down
1.	What frequency is measured in.
3.	A wave that is part of the electromagnetic spectrum with the highest frequencies.
4.	when a beam of light or a wave is spread out.
5.	The distance between two similar parts of a wave.
9.	When waves occupy the same space, they combine to form a new wave.
10.	A wave interfering with its reflection.
11.	A mechanical wave vibrating at a parallel angle.
12.	How many waves are created every second.
14.	Empty space that a wave cannot pass through.
16.	A mechanical wave vibrating at a perpendicular angle.
18.	A wave that is part of the electromagnetic spectrum with the lowest frequencies.