Physics Review

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Across
  1. 3. Complementary colour to yellow
  2. 5. Radiation used for medical imaging
  3. 7. Blue + Green
  4. 10. Light is part of the __________ spectrum
  5. 14. Waves used for communication
  6. 15. Strongest form of radiation
  7. 16. All primary colours together
  8. 18. An object that does not produce light
  9. 19. An object that produced its own light
Down
  1. 1. Light produced by a living creature
  2. 2. Light from a chemical reaction
  3. 4. Energy transfer that does not need a medium
  4. 6. The middle colour in visible light
  5. 8. LED
  6. 9. Primary colour of light
  7. 11. Energy transfer through the collision of particles
  8. 12. Radiation used by many TV remotes
  9. 13. The absence of light
  10. 17. Light production through heat