Some surfaces, like a mirror, cause the light to bounce off. The light
bounces off, or reflects back, at the same angle that it hit the surface.
The amount of light reflected depends on the type of surface. Shiny surfaces
reflect lots of light. Dull surfaces reflect very little light.
When you look in a mirror, you see yourself because the light shining
on your body is reflected from the mirror back to your eyes.
When a light ray travels through a material the direction of the light
will change. This is called refraction. The amount the light bends depends
on the type of material.
A lense can cause light to change direction. If you have ever used a
magnifying class to focus light to a small point, you are seeing refraction
at work.
