Across
- 1. light that vibrates in only one direction.
- 5. is a sealed glass tube that contains.
- 7. the ejection of electrons from a substance when light is shined on it.
- 8. sodium orc mercury.
- 10. is a methodof transmitting signals by changing the amplitude of a wave
- 12. the energy that is transferred through space by electromagnetic
- 14. that appear in colors.
- 15. a buld that has a tungsten flament and contains
- 16. to view the different colors
- 19. us-if it give off its own light
Down
- 2. what is the transverse wave that transfers electrical and Margery.
- 3. is a method of transmitting signals by changes the frequency of a wave.
- 4. what do the television go to
- 6. trave at the same speed in a vacum but they have different wavelegeng.
- 9. is geat enough to kill
- 11. are electromagnetic waves with waves with wavelengths just shorter than those of ultraviolet rays.
- 13. ray have a higher frequency then radio waves so they have more energy then radio waves.
- 17. tiny particle or pack packet of light energy.
- 18. rays are the electomagnetic waves with the shortest wavelengths and highest frequencies