waves and the EMAG spectrum

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Across
  1. 3. term for the zero line through a wave
  2. 5. something that senses a wave
  3. 7. energy family that includes light
  4. 9. the I in ROYGBIV
  5. 10. 300,000,000 meters per second
  6. 13. longer wavelength than blue light
  7. 14. distance required for one wave cycle
  8. 16. equals the number of waves per second
  9. 17. atoms do this in order to transmit sound
  10. 19. relationship of frequency and period
  11. 20. this is carried by waves
  12. 21. form of EMAG radiation a.k.a. “heat”
Down
  1. 1. time required for one complete wave cycle
  2. 2. something that produces a wave
  3. 3. higher frequency than green light
  4. 4. equals one half the wave height
  5. 6. frequency if the period equals 4/3
  6. 8. type of wave that carries sound
  7. 11. type of wave that carries light
  8. 12. unit of AM radio stations (ex. 1710 ___)
  9. 15. the standard unit of frequency
  10. 18. low-frequency invisible radiation