The Eye_Gr7_ParkIS

3. fibers that attach the lens to change its shape and assist in focus
5. the light ray that bounces off a surface after reflection
6. colored ring of muscle that controls the size of the pupil and regulates light entry
10. a wave in which particles move perpendicular to the direction of the wave
11. nerve that transmits visual information from the retina to the brain
16. point where the optic nerve exits the eye; lacks photoreceptors
18. a wave in which particles move parallel to the direction of the wave
19. an imaginary line drawn perpendicular to a surface at the point where a ray hits
21. small central area of the retina with the highest concentration of cones for sharp vision
22. the highest point of a wave (also known as the peak)
23. tough, white outer layer of the eye that protects internal structures and maintains eye shape
25. the material through which a wave travels
26. the incoming light ray that strikes a surface
27. the distance between corresponding points on a wave, such as crest to crest

1. a disturbance that transfers energy from one place to another
2. the bending of light as it passes from one medium to another
4. transparent, flexible structure that fine-tunes focus of light onto the retina
5. light-sensitive layer containing photoreceptors that convert light into nerve signals
7. the bouncing back of light or waves when they hit a surface
8. transparent, curved outer surface that covers the front of the eye and helps focus incoming light
9. the number of waves that pass a point in one second
12. Law of reflection is the rule that the angle of incidence __ the angle of reflection
13. central opening in the iris that allows light to enter the eye
14. photoreceptor cells responsible for color vision and visual detail
15. When light travels from a less dense to a more dense medium, it bends ___ the normal.
17. the lowest point of a wave
20. the height of a wave measured from the rest position
24. photoreceptor cells responsible for vision in low light