Wavelengths

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Across
  1. 5. used for heating
  2. 6. the lowest wave
  3. 8. different colors
Down
  1. 1. shorter than visible light: bigger than X-ray
  2. 2. The highest wave
  3. 3. used in remote stuff
  4. 4. waves you can see
  5. 7. waves used for looking into the skeletal system