Section 2-1 and 2-2

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Across
  1. 7. Another term for light
  2. 10. Sunburns & Tans
  3. 12. Everything physical which exists in space and time
  4. 13. Range of electromagnetic radiation
  5. 17. Number of seconds needed for the wave to repeat itself at some point in space
  6. 18. lowest point of the wave
  7. 20. no air or air pressure
  8. 21. Explain why something happens
  9. 22. Damages living cells
Down
  1. 1. AM, FM, TV Bands, and microwaves
  2. 2. Penetrates human tissue→ reveal health-based info
  3. 3. A way in which energy is transferred from place to place without physical movement material from one location to another
  4. 4. when the particles are briefly at rest prior to moving up the crest or down to the trough
  5. 5. seen by the human eye
  6. 6. ovens and satellites communications
  7. 8. Heat
  8. 9. Energy which is carried between 2 fields
  9. 11. A unit of distance
  10. 14. Maximum departure of the wave from the undisturbed state
  11. 15. highest point of the wave
  12. 16. Energy transmitted from one point to another through space with no physical connection between 2 places
  13. 19. Number of meters needed for a wave to repeat itself at any given moment in time