Light Vocabulary

1. / Cells in the retina that detect dim light.
4. / The opening in the center of the iris through which light enters the inside of the eye.
5. / The transparent front surface of the eye.
6. Lens / A lens that is thinner in the center than at the edges.
8. Colors / Three colors that can be used to make any color.
9. / A curved piece of glass or other transparent material that is used to refract light.
10. Colors / Any color produced by combining equal amounts of any two primary colors.
13. Material / A material that transmits light without scattering it.
14. / A straight line used to represent a light wave.
15. Material / A material that scatters light as it passes through.
19. Reflection / Reflection that occurs when parallel rays of light hit a smooth surface and all reflect at the same angle.
20. of Refraction / A measure of the amount a ray of light bends when it passes from one medium to the other.
21. Point / The point at which light rays parallel to the optical axis meet, or appear to meet, after being reflected(or refracted) by a mirror (or a lens)
26. / A condition that causes a person to see nearby objects as blurry.
28. Mirror / A flat mirror that produces an upright, virtual image that the same size as an object.
29. / A copy of an object formed by reflected or refracted rays of light.

2. Nerve / Short, thick nerve that carries signals from the eye to the brain.
3. Material / A material that reflects or absorbs all of the light that strikes it.
6. Colors / Any two colors that combine to form white light or black pigment.
7. / Cells in the retina that respond to and detect color.
11. Axis / An imaginary line that divides a mirror into half.
12. Image / An upside down image formed where rays of light meet.
16. / A condition that causes a person to see distant objects as blurry.
17. Lens / A lens that is thicker in the center than at the edges.
18. / The layer of cells that lines the inside of the eyeball.
22. Image / An upright image formed where rays of light appear to meet or come from.
23. Reflection / Reflection that occurs when parallel rays of light hit a rough surface and all reflect at a different angle.
24. / An image of a distant object caused by refraction of light as it travels through air of varying temperature.
25. / A colored substance used to color other materials.
27. / The ring of muscle that controls the size of the pupil and gives the eye its color.