Vocabulary # 1

1.Bioluminescent: Light produced by living organisms.

Examples: Light Sticks, fireflies, bioluminescent bacteria. 

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: