Across
- 4. a material that reflects all light
- 5. the area where light enters the eye
- 8. go through
- 10. see through
- 14. the type of variable that is changed by the scientist
- 15. a smaller representation of something
- 17. the transparent covering of the eye
- 18. bounce off
- 19. an event that happens naturally but is difficult to understand
Down
- 1. when light changes direction
- 2. the type of variable that is measured (for data)
- 3. the part of the eye that turns light into an electrical signal
- 6. this causes light to focus to a point on the retina
- 7. NOT see through
- 9. a set of parts that work together
- 11. light travels in _____ lines
- 12. this takes electrical signals from the retina to the brain
- 13. a material that transmits almost all light that shines on it
- 14. the color part of the eye that can open or shut to let certain amounts of light into the eye
- 15. a very thin layer of aluminum or metal added into a clear piece of glass/plastic
- 16. the name of the goofy man in the video with the detectives