Light and sight

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Across
  1. 5. Convex lenses are _______ lens
  2. 8. mirror- When light reflects, the image is flipped horizontally on this mirror
  3. 11. The human eye is a sensory organ in the ______ system
  4. 12. Opposite of Transparent
  5. 13. Word for long-sightedness
  6. 16. What comes down to earth from the sun is light ____
  7. 17. Mirror which is curved inwards
  8. 18. What travels down to earth in 8 minutes and in a 300,000,000 meters per second
  9. 19. What do you see with every day?
  10. 20. A rainbow multicolored ____
Down
  1. 1. Mirror that is curved outward
  2. 2. The _______ is the clear outer part of the eye's focusing system
  3. 3. Word for short-sightedness
  4. 4. Another word for seeing
  5. 6. The thing that forms when light passes through transparent things such as water
  6. 7. Concave lenses are _______ lens
  7. 9. The colored part of the eye is ______
  8. 10. A lens that is simply a ____ substance lens
  9. 14. 90 degrees is a right _______
  10. 15. When light hits the ___(a tissue at the back of the eye