Waves vocab

1. A wave that moves through areas of high and low pressure (like sound).
3. An area where particles are pushed close together (high pressure).
4. The change in pitch of a sound when the source is moving (higher when it moves toward you, lower when it moves away).
8. The distance from one crest to the next crest (one full wave).
10. The lowest point of a wave.
12. How strong a wave is; depends on how much energy it carries.
15. How many waves pass a point in one second.
16. The highest point of a wave.
17. A wave where the motion of the medium is perpendicular (at a right angle) to the direction the wave travels.
18. The material that sound travels through (like air or water).
19. How high or low a sound is; depends on frequency.

2. The height of a wave from the middle to the crest (how “tall” the wave is).
5. A wave where the motion of the medium is in the same direction as the wave (back-and-forth compressions).
6. An area where particles are spread apart (low pressure).
7. When two waves cancel each other out and make a smaller or zero wave.
9. When two waves combine to make a bigger wave (higher amplitude).
11. Sounds that are too low-pitched for humans to hear.
13. A wave that moves by vibrating particles and transferring energy through a medium.
14. Sounds that are too high-pitched for humans to hear.