Across
- 5. When all the primary colors of light are combined you get this color
- 7. A straw appears broken in a glass of water because of this phenomenon
- 8. Sound has to travel through a ___, liquid, or gas
- 13. When read and green light combine you get this color
- 14. The part of a longitudinal wave where the particles are packed tight together
- 15. This type of electromagnetic wave has the longest wavelength and the lowest frequency
- 16. The ___ pitch sounds have a larger frequency
- 18. An apple appears read because if reflects read wavelengths and ___ the other colors
- 20. Waves that move the matter at right angles to the direction the waves travel
- 21. ___ can either be constructive or destructive
- 24. The reflection of a sound wave
Down
- 1. The electromagnetic spectrum puts the waves in order of increasing ___
- 2. The length of one wave from start to finish
- 3. When a sound moves towards you the waves get _____
- 4. The unit of frequency
- 6. The two types of waves are transverse and ___
- 9. You cannot see any light through his type of material
- 10. The unit for a sound's loudness
- 11. All electromagnetic waves travel at the speed of ___
- 12. The low part of a transverse wave
- 17. This type of electromagnetic wave can destroy cells - including cancer
- 19. Diffraction is when a wave hits a ___ and bends
- 22. The speed of sound at ___ degrees Celsius is 343 m/s
- 23. Music is when notes combine and it has a pleasant effect. _____ does not have a pleasing pattern