Across
- 2. unit used to express loudness
- 10. a measure of how far the particles in the medium move from their normal rest position
- 12. happens when two or more waves overlap and form one wave
- 13. distance from any point on a wave to an identical point on the next wave
- 14. longitudinal wave that is caused by vibrations and travels through a medium
- 16. a disturbance in electric and magnetic fields
- 17. uses sound waves to find objects
- 18. the material through which a wave travels
- 20. happens when a sound wave matches the natural frequency of an object causing it to vibrate
- 21. the time required for one cycle of waves
Down
- 1. tells how many waves occur in an amount of time
- 3. measure of how well a sound can be heard
- 4. a disturbance that transfers energy from one place to another
- 5. how high or low you think a sound is
- 6. particles move back and forth in the same direction that the wave travels
- 7. a wave that requires a medium to travel
- 8. the speed at which a wave travels
- 9. particles move perpendicularly to the direction that the wave travels
- 11. a reflected sound wave
- 15. sound waves that have frequencies greater than 20,000 hertz
- 19. what frequency is expressed in