Across
- 3. seconds
- 7. length lambda
- 8. interference subtraction
- 10. wave parallel
- 12. interference addition
- 13. hertz
- 15. waves sound
- 16. superposition
- 17. spread
- 19. disturbance
Down
- 1. propagation
- 2. crest
- 4. effect shift
- 5. speed velocity
- 6. bounce
- 9. waves light
- 11. wave perpendicular
- 14. height
- 18. bend