Across
- 4. Light can pass through, yet not entirely clear
- 6. Spectrum An ordered list of all types of electromagnetic radiation
- 10. Matter in which waves travel in
- 11. Coils are stretched apart
- 13. Wave bounces off when it hits a hard boundary
- 15. Part of a wave bends around a corner
- 18. Top of a wave
- 19. Waves energy dies off in soft material
- 20. Distance of two identical points
Down
- 1. Distance from rest to crest
- 2. Waves travel parallel
- 3. When two waves overlapped and interact
- 5. Light can pass through clearly
- 7. Coils are squeezed together
- 8. Waves travel perpendicular
- 9. The number of waves that pass a given point
- 12. Light can not pass in
- 14. Bottom of a wave
- 16. Wave bends when entering a transparent boundary
- 17. Shift Siren drives by, its pitch changes