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