Colour

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Across
  1. 6. we can only see an objects colour if it ____ light
  2. 7. red and blue light make
  3. 8. the name of the cells in the eye that detect colour
  4. 10. the wave property that is different for all the colours in the visible spectrum
  5. 12. if light is not reflected it might be ________
  6. 14. the name for when white light is separated out into the visible spectrum
  7. 15. a mixture of red blue and green light makes _____
Down
  1. 1. a piece of glass that separates out white light into the visible spectrum
  2. 2. a material that only allows certain colours to pass through it
  3. 3. if blue light is shone on a red object it looks _____
  4. 4. a primary colour
  5. 5. red and green light make
  6. 8. blue and green light make
  7. 9. a primary colour
  8. 11. the technical term for light passing through a material
  9. 13. a primary colour