1. Light Exploration

2. In this activity you will:
Observe that light passes through some materials easily,some materials partially, and some not at all.
Classify materials according to the way light passes through them.

3. Materials and Light
There are three different types of materials that light will or will not pass through.
Transparent
Translucent
Opaque

4. Transparent Light
Materials that you can see through allow almost all of the light to pass through.
Light is allowed through with very little bending or scattering of the rays of light.

5. Examples of Transparent Materials
Clear glass
Clean water
Clear plastic

6. Question
Why is transparent tape called transparent tape?

7. Answer
You can see through it or light rays are allowed to pass through it.
I can completely see my leftovers wrapped in transparent plastic wrap.

8. Translucent Materials
Materials that allow only some light to pass through.
Objects allow light to pass through, but they scatter the rays so much that you cannot get a clear view of what is on the other side.
Examples of Translucent Materials
Thin fabrics
Frosted glass
Thin paper

9. Question
Why is wax paper translucent?

10. Answer You can see some light, but you cannot see through it.
I can barely see my leftovers wrapped in wax paper.

11. Opaque Materials
Light cannot pass through these materials.

12. Examples of Opaque Materials
Brick
Metal
Thick paper
Aluminum Foil
Wood
Stones

13. Quick Facts about Opaque Materials
These objects will cast a shadow when lit up.
Brick, metal, and thick paper stop light completely.
This is why you cannot see your leftovers wrapped in aluminum foil!

14. Writing Activity
Write a paragraph that includes a definition and example of transparent , translucent and opaque light.