Wave - Crossword Labs

2. Totally empty space (no medium). Sound cannot travel through this.
3. A disturbance that transfers energy from place to place
7. A type of wave where the medium moves parallel (horizontal) to the direction the energy is moving. Sound is this type of wave.
9. A type of wave where the medium moves perpendicular (vertical) to the direction the energy is moving.
10. The distance between two similar parts of a wave.
11. The parts of a longitudinal wave that are closest together.
12. The maximum distance from the rest position that the medium moves in a wave.
14. The parts of a longitudinal wave that are spread apart.
16. When waves spread out to fill the space through which they are moving.
17. The number of cycles of a periodic wave occurring per unit time is defined as a wave's ____.
18. Wave A disturbance in matter that carries energy from one place to another.
20. Photons are particles which transmit___.

1. When a wave changes direction because it goes into a new medium.
2. A repeated back and forth or up and down motion that gives energy to a wave. Also called "oscillation".
4. The material a mechanical wave moves through.
5. A transverse wave of pure energy that can go through both a medium and empty space (vacuum). Light is this kind of wave.
6. The lowest point of a transverse wave.
8. The specific direction that a transverse wave is vibrating.
13. A single disturbance that moves from point to point through a medium is called a ___.
15. The particles of the medium move ________ to the direction of which the wave is traveling.
19. The SI unit for frequency is ___.