Across
- 5. the bouncing back of a wave after it strikes a barrier or an object
- 6. the bending of waves around a barrier or through an opening
- 12. the passing of light though matter
- 14. means “below red”
- 17. the release of light energy by particles of matter that have absorbed energy
- 18. despite their name, microwaves are not the shortest EM waves
- 21. the bending of a wave as it passes at an angle from one medium to another
- 23. can reflect off the ionosphere. This helps AM waves travel long distances
- 26. The idea that light can act as either particles of waves is known as the particle-wave theory
- 27. a material that gives a substance it’s color by absorbing some colors of light and reflecting others
Down
- 1. the transfer of energy carried by light waves to particles of matter
- 2. the entire range of electromagnetic waves
- 3. means “beyond violet”
- 4. the angle between the incident beam and the normal
- 7. a wave that can travel through space or matter and consists of changing electric and magnetic fields
- 8. EM waves with long wavelengths and low frequencies
- 9. the very narrow range of wavelengths and frequencies in the electromagnetic spectrum that humans can see
- 10. the transfer of energy though matter or space as electromagnetic waves such as visible light and infrared waves
- 11. a wave interaction that occurs when two or more waves overlap
- 13. contains all colors of light
- 15. pass through the ionosphere. FM waves cannot travel as far as AM waves
- 16. gamma rays are produced by some nuclear reactions
- 19. the law that states that the angle of incidence is equal to the angle of reflection
- 20. the term describing matter that transmits light but also scatters the light as it passes through matter
- 22. the term describing matter though which light is easily transmitted
- 24. A tiny “packet” of energy that is released by an electron that moves to a lower energy level on an atom
- 25. the term describing matter that does not transmit any light