8.4-8.5 review

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Across
  1. 2. material that transmit light without it being scattered.
  2. 4. A wave that does not need a medium to travel.
  3. 7. fog is an example of this.
  4. 8. the color a red apple will be under a green filter
  5. 9. When photons knock electrons loose just using light energy.
  6. 10. a tiny package of light energy.
  7. 11. color created with the three primary colors of pigments are mixed in equal amounts
  8. 12. mechanical wave that has a crest and trough
  9. 14. two colors that combine to form white light.
  10. 17. substances used to color objects
  11. 18. a wall is an example of this type of material
  12. 19. transparent object you look through to see outside
Down
  1. 1. primary colors of paint (in alphabetical order)
  2. 3. Energy transferred by a wave such as a microwave or gamma wave.
  3. 5. sound waves are carried on this type of mechanical wave.
  4. 6. opaque materials do this to light (three words)
  5. 9. light once it passes through a special filter.
  6. 13. primary colors of light (in alphabetical order)
  7. 15. three colors that can combine to make any color
  8. 16. when two primary colors mix in equal amounts.