Across
- 4. the bouncing back or change in a direction of a wave after it strikes a barrier
- 8. moves perpendicularly
- 10. moves parallel
- 11. can be seen by the human eye
- 12. definite relative to the direction of propagation
- 13. distance between crest and peak
Down
- 1. the bending of waves
- 2. number of waves passed in a amount of time
- 3. sprial arms
- 5. does not require a medium
- 6. The greatest distance in particles
- 7. the bending of a wave as it passes from one material to another
- 9. time to complete one cycle of a phenomenon