Across
- 2. the number of wavelengths that pass by a point each second
- 5. measured in decibels
- 9. waves that cause particles to move at right angles to the direction of the wave
- 10. repeated echoes of sound waves
- 11. complete spectrum of electromagnetic wave frequencies and wavelengths
- 12. wavelengths between 400 billionths and 10 billionths of a meter
- 13. type of wave in which particles move back and forth along the direction the wave travels
Down
- 1. type of wave emitted by all warm bodies
- 3. the change in direction of a wave when it travels from one medium to another
- 4. bending of light around an object
- 6. describes the behavior of waves when they strike a surface
- 7. distance between two adjacent crests
- 8. carries energy from one place to another
- 14. how low or high as sound seems