8.4-8.5 review

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