Light

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Across
  1. 4. Process where light energy is taken in by a material rather than reflected
  2. 8. The bending of light as it passes from one medium into another
  3. 10. The dark central region of a shadow where light is completely blocked
  4. 12. The bouncing back of light rays when they hit a smooth surface
  5. 13. Material that allows light to pass through clearly and sharply
  6. 16. The splitting of white light into its component colors
  7. 17. The incoming light ray that hits a surface before reflection
  8. 18. A lens or mirror that curves outward like the back of a spoon
  9. 20. An optical instrument using mirrors that allows you to see over obstacles
Down
  1. 1. The distance light travels in one full Earth year
  2. 2. A fundamental packet or particle of light energy
  3. 3. The band of colors produced when white light is separated
  4. 5. An imaginary line drawn perpendicular or at ninety degrees to a surface
  5. 6. Material that scatters light as it passes through making objects appear blurry
  6. 7. Reflection of light off a rough surface scattering rays in all directions
  7. 9. The lighter partial shadow surrounding the darkest part of a shadow
  8. 11. An object or body that produces and emits its own light energy
  9. 14. A triangular object that disperses white light into a rainbow of colors
  10. 15. A lens or mirror that curves inward like the inside of a bowl
  11. 19. Material that absorbs or reflects all light allowing none to pass through