Heat and Energy Unit 6 Vocabulary Review

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Across
  1. 6. surface is curved toward the incoming light
  2. 7. glass that splits the colors of light
  3. 9. distance from lens to focal point
  4. 10. bending of light
  5. 12. point at which light rays converge
  6. 14. angle at which light reflects off an object
  7. 16. flat mirror
  8. 19. angle at which light approaches an object
  9. 21. allows light to pass
  10. 23. surfaces curve towards the center of the lens
  11. 24. another name for convex lens
  12. 25. center of shadow, no light showing
  13. 26. special cells in the eye that detect light
  14. 27. gray area around umbra, small amount of light showing
Down
  1. 1. blocks all light
  2. 2. surface is curved away from incoming light
  3. 3. back part of the eye
  4. 4. another name for focal point
  5. 5. wave changing direction when it bounces off a surface that does not absorb it
  6. 8. reflected image
  7. 11. ultraviolet light emitted from plasma excites phosphors to produce light
  8. 13. surfaces curve outward away from the center of the lens
  9. 15. a small bulb containing a semiconductor that emits light when current is passed through it
  10. 17. special cells in the eye that detect different colors
  11. 18. emits light when current passes through a filament
  12. 20. allows some light to pass and blocks other light
  13. 22. image of the sky projected above the ground because of different densities of air