waves

5. The lowest point of a transverse wave
8. The material a mechanical wave moves through
10. unit of frequency in the International System of Units
11. A disturbance that transfers energy from place to place
13. When a wave changes direction because it goes into a new medium
16. The parts of a longitudinal wave that are spread apart
17. A type of wave where the medium moves parallel (horizontal) to the direction the energy is moving. Sound is this type of wave.
18. A repeated back and forth or up and down motion that gives energy to a wave. Also called "oscillation"
19. A transverse wave of pure energy that can go through both a medium and empty space (vacuum). Light is this kind of wave.
20. The distance between two similar parts of a wave

1. When waves spread out to fill the space through which they are moving
2. How many waves are created every second. Measured in Hertz (Hz)
3. Totally empty space (no medium). Sound cannot travel through this
4. When one wave hits another wave, their amplitudes combine and make a new wave
6. The parts of a longitudinal wave that are closest together
7. The specific direction that a transverse wave is vibrating
9. a disturbance in matter that carries energy from one place to another
12. The maximum distance from the rest position that the medium moves in a wave
14. A type of wave where the medium moves perpendicular (vertical) to the direction the energy is moving.
15. The highest point on a transverse wave