Across
- 2. A change in pitch of a sound when it starts to move towards or away from you.
- 3. The height of a wave.
- 5. A region empty of matter through which sound cannot travel.
- 7. A region of a air with relatively many particles.
- 8. A sound wave that bounces off a surface.
- 9. frequency of a sound wave
- 10. The material through which a sound wave travels.
Down
- 1. How amplitude is linked to loudness
- 4. How loud or quiet a sound is.
- 6. A measure of how many times an object vibrates per second.