1. LIGHT

2. Opaque, Translucent, Transparent
Opaque – only absorbs and reflects light
Translucent – allows some light to pass through, some light absorbed and reflected
Transparent – allows almost all the light to pass through, only a small amount of light absorbed and reflected

3. TRANSPARENT
OPAQUE
TRANSLUCENT

4. Law of Reflection
The angle at which a light wave strikes a surface is the same as the angle at which it is reflected.

5. Regular vs. Diffuse Reflection

7. Refraction Caused by a change in the speed of light
If the light wave is traveling at an angle and the speed that light travels is different in the two materials  the wave will be bent (refracted)

10. Angle of Incidence Angle of Refraction Normal Incident Ray Air Water
Refracted Ray

11. Prism

13. Mirage
A result of the air above the ground being much warmer or cooler than the ground, causing refraction due to a change in the speed the light is traveling