light

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Across
  1. 1. acronym for the colors of the rainbow
  2. 3. longest wavelength
  3. 4. particles of light energy
  4. 7. reflects all colors but absorbs this
  5. 8. can produce any color of light
  6. 9. this scatters light when it passes through
Down
  1. 1. the colors not absorbed
  2. 2. transmits lights
  3. 5. shortest wavelength
  4. 6. reflects/absorbs light