1. Ch. 20: Transparent, Translucent, and Opaque Materials
Vocabulary:
transparent, translucent, opaque

2. Transparent Materials
When light passes straight through a material, that material is transparent.
Transparent materials you can see completely through.

3. Translucent Materials
Translucent materials scatter light as it passes through them.
You cannot see through translucent materials, but light will pass through them.

4. Opaque Materials
Opaque materials do not allow any light to pass through them.
All light that comes into contact with an opaque material is either reflected or absorbed.
Opaque materials make a show when you shine light on them.