Across
- 4. distance from crest to resting point
- 6. low point of a wave
- 7. high-density area in a longitudinal wave
- 9. distance from one crest to another on a wave
- 10. object that a wave travels through to transfer energy
Down
- 1. high point of a wave
- 2. travels perpendicular to the direction of the source's motion
- 3. number of occurrences in a given period of time
- 5. travels parallel to the direction of the source's motion
- 8. low-density area in a longitudinal wave