1. Light Waves
COS #18

2. What is light
*It is Electromagnetic radiation that you can see.

3. *Sources of light Reflection is the bouncing of a wave off a surface.
For example: your reflection in the mirror- because the light reflects off the surface of a mirror.

4. *Transmission The passing of light through an object.
A n object on one side of a window can be seen because light passes through it on the other side of the window.
3 ways light can pass through an object:
1. Transparent
Almost all light that strikes it passes through and forms a clear image
2. Translucent- most light passes through and creates a blurry image
3. Opaque- no light passes through.

5. *Absorption
Transfer of energy by a wav to the medium through with it travels Example: as light tries to pass through the window it feels warm because some of the energy from the light wave is absorbed by the material.

6. *Reflection
The bouncing back off of a surface. *MOST MATTER THAT INTERACTS WITH LIGHT INTERACTS IN A COMBINATION OF THESE THREE WAYS.

7. *REFRACTION
The change in direction of a waves as it changes speed while moving from one medium to the next.