Across
- 3. substance that transfers the energy
- 5. sound navagtion and ranging
- 7. low and high
- 8. top of waves
- 10. a unit of frequency
- 11. a sound wave that is traveling faster then the speed of sound
- 13. electromagnetic radiation, similar to visible light.
- 14. electromagnetic radiation
Down
- 1. A ray of light or another form of radiant energy that is thrown back from a nonpermeable or nonabsorbing surface
- 2. rays a form of magnectic radation
- 4. the number of times that a repeated event
- 6. one dimensional motion
- 9. bottom of waves
- 11. slower then the speed or sound
- 12. change in frequency