EM Spectrum

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Across
  1. 2. Unit for frequency
  2. 6. Highest point in a wave cycle
  3. 7. The part of the wave that has the lowest density
  4. 8. Night vision goggles can detect this part of the EM spectrum
  5. 11. Waves spread out when passing through a gap
  6. 14. Distance from a wave's rest position to its crest
  7. 16. This part of the EM spectrum has the greatest energy
  8. 17. This type of wave vibrates in the direction of movement
  9. 18. Bounce back an incoming wave without absorbing
  10. 19. Used in airport security checks
Down
  1. 1. This type of wave vibrates perpendicularly to the direction of movement
  2. 3. Bending of light when it passes from one medium to another
  3. 4. Lowest point in a wave cycle
  4. 5. Vibration
  5. 9. Used to reheat food
  6. 10. Varies depending on frequency
  7. 12. Directly related to energy
  8. 13. Distance between crests
  9. 15. This part of the EM spectrum is visible to the human eye
  10. 20. This part of the EM spectrum has the longest wavelength