Light

3. a material that allows most of the light that strikes it to pass through, but through which objects appear blurry.
7. mirror a mirror that curves outward.
8. a lens that is thicker in the middle than at the edges.
11. energy energy carried by an electromagnetic wave.
12. image an image of an object that your brain perceives to be in a place where the object is not.
14. a material through which light does not pass.
15. reflection of light from a smooth, shiny surface.
16. a lens that is thicker at the edges than in the middle.

1. the change in direction of a wave as it changes speed in moving from one medium to another.
2. point the point where light rays parallel to the optical axis converge after being reflected by a mirror or refracted by a lens.
4. of reflection law that states that when a wave is reflected from a surface, the angle of reflection is equal to the angle of incidence.
5. a material that allows almost all of the light striking it to pass through, and through which objects can be seen clearly.
6. a transparent object with at least one curved side that causes light to change direction.
9. reflection of light from a rough surface
10. electromagnetic radiation that you can see.
11. image an image that forms where rays converge.
13. mirror a mirror that curves inward.