Across
- 4. The bundle of nerves that take signals from the eye to the brain
- 5. Electromagnetic radiation with the lowest frequency and the longest wavelength
- 8. Clear protective covering over your eyes
- 9. Colorful muscle that regulates the pupil
- 10. Electromagnetic radiation which has a longer wavelength than visible light
- 11. Electromagnetic radiation at wavelengths longer than the red end of visible light
- 13. Transparent structure that bends light
- 15. Electromagnetic radiation that human eyes can see ranging from red (long wavelengths) to violet (short wavelengths)
- 18. The highest energy, shortest wavelength electromagnetic radiations
- 19. A spot in your vision where no image is formed
Down
- 1. Provides blood to places like the eye
- 2. The muscles that are in the front of your eye, near the lens
- 3. The full range of frequencies, from radio waves to gamma rays, that characterizes forms of light
- 6. Electromagnetic radiation at wavelengths shorter than the violet visible light
- 7. The light-sensitive lining in the back of the eye
- 12. The distance between peaks in a wave
- 14. The adjustable opening in your eye
- 15. The clear, gel-like substance that fills the middle of your eye
- 16. Energy emitted in the form of waves (light) or particles (photons)
- 17. Electromagnetic radiation of very short wavelength and high energy
- 20. Tough, opaque (white) outer covering of the eye