Across
- 3. Time needed for one complete wave
- 4. Highest point of a transverse wave
- 7. Wave where particles move perpendicular to wave direction
- 10. When two waves combine
- 13. Lowest point of a transverse wave
- 15. Wave where particles move parallel to wave direction
- 17. Distance between two consecutive crests or compressions
- 18. Region where particles are close together
Down
- 1. Unit of frequency
- 2. Mechanical wave that needs a medium
- 5. Region where particles are spread apart
- 6. Maximum height of a wave from its rest position
- 8. Electromagnetic wave that does not need a medium
- 9. Bouncing back of a wave
- 11. Material through which a wave travels
- 12. Number of waves passing a point each second
- 14. Spreading of waves through an opening
- 16. A disturbance that transfers energy without transferring matter
- 19. Bending of a wave entering a new medium
- 20. Distance a wave travels per unit time