Across
- 1. an empty space
- 5. used to measure sound intensity
- 6. the highest point, or peak, of a wave
- 7. bending of a wave as it enters a new medium at an angel other than 90 degrees
- 10. wave that travels in the same direction as the disturbance
- 16. increasing of the strength of an electrical signal
- 17. the meeting an combining of waves
- 19. highness or lowness of sound
- 20. the change in perceived pitch that occurs when the source or the receiver of a sound is moving
- 23. strengthening of a sound wave in this way
- 26. one complete wave, or cycle, per second
Down
- 2. any substance that a wave moves through
- 3. bouncing back of a wave after it strikes a barrier
- 4. disturbance that transfers energy from one place to another
- 8. sound waves in the range above 20,000 hertz
- 9. waves that transfer energy through matter
- 11. direction in which the wave travels is perpendicular, or at right angles, to the direction of disturbance
- 12. the spreading out of waves through an opening or around the edge of an obstacle
- 13. for a transverse wave is the distance between a line through the middle of a wave and crest or trough
- 14. the amount of energy its sound wave has
- 15. a rapid, back and forth motion
- 18. distance from one wave crest to the very next crest
- 21. the number of waves passing a fixed point in a certain amount of time
- 22. lowest point, or valley, of a wave
- 24. a wave that is produced by a vibrating object and travels through matter
- 25. the scientific study of sound