Waves

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Across
  1. 2. measures the wavelength and frequency of a wave
  2. 5. come from the sun
  3. 7. used to fight cancer
  4. 8. used for remote controls
Down
  1. 1. the only wave visible to the human eye
  2. 3. lowest frequency wave
  3. 4. used to cook food
  4. 6. Used to view the skeletal system