Across
- 2. substance that a wave moves through
- 4. used to measure sound intensity
- 6. highest point of the wave
- 10. the bouncing back of a wave after it hits a barrier
- 12. a complete wave or sound per second
- 13. change of the pitch that occurs when a sound is moving
- 17. the spreading of waves through an opening or going around an obsticle
- 18. a wave that is made by a vibrating object and travels through matter
- 19. waves that transfer energy through matter
Down
- 1. the distance between a line through the middle of the wave and a crest or trough
- 3. distance from one wave crest to another wave crest
- 5. the wave travels in the same direction as the disturbance
- 7. the meeting of waves
- 8. the direction in which the wave travels is perpendicular or at a right angle
- 9. the bending of a wave when it hits a new barrier
- 11. the amount of energy its sound wave has
- 14. the characteristic of highness or lowness of a sound
- 15. number of waves passing a fixed point
- 16. lowest point of the wave
- 20. disturbance that transfers energy from one place to another
- 21. a very fast back and forth motion