Light Sticks
2. Light ray: A straight-line beam of light as it travels outwad from its source.
Example: A torch.
3. Law of reflection: The angle of an incoming light ray equals the angle of the reflected ray.
Example:
4. Concave Mirror: A mirror that curves in on the shiny side.
Example:
5. Convex Mirror: A mirror that curves out on the shiny side.
Example:
6. Opaque: Completely blocking light from passing through.
Examples: Book, jar and plush.
7. Transparent: Letting all light through, so that objects on the other side can be seen clearly.
Examples: Glass Vase and glasses.
8. Translucent: Letting only some light through, so that objects on the other side appear blurry.
Example:
9. Polarization: Allowing light vibrations to pass through in only one direction.
Example:
10. Refraction: The bending of light rays as they pass from one substance into another.
Example:
11. Convex Lens: A lens that curves outward (is thikcer at the middle than at the edges) and brings light rays together.
Example:
12. Concave Lens: A lens that curves inward (is thicker at the edges than at the middle) and spreads light rays apart.
Example:
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