class
Across
- 3. One of the four fundamental forces of nature.
- 4. a wave phenomenon
- 7. radiation
- 8. a disturbance or oscillation
- 10. the spreading, bending of waves
- 11. mechanical wave
- 12. the maximum displacement
- 14. two or more waves same frequency
Down
- 1. wave
- 2. the number of waves
- 5. the bending of a wave
- 6. relfection
- 9. the spatial period of a periodic wave
- 10. the change in frequency
- 13. a substance or material