Across
- 3. the rate at which a wave's energy moves through a given area
- 6. unit expressing a ten-fold increase in sound wave intensity
- 9. dependent on the hearer
- 12. do not require matter to travel
- 13. a wave in which the medium travels perpendicular to the direction the wave travels
- 15. from crest to crest in a wave
Down
- 1. wave a wave in which the medium travels parallel to the direction the wave travels
- 2. sound produced when an object exceeds Mach 1
- 4. any speed faster than the speed of sound in the medium of interest
- 5. a disturbance in matter that transferrs energy through the matter
- 7. a solid, liquid, or gas
- 8. distance between a point on one cycle of a wave to the same point on the next cycle
- 10. the number of complete cycles in a given time; how many wave crests hit you each second if you are not moving
- 11. required for sound to travel
- 14. a sound wave property that is the maximum displacement of the medium from its rest position