1. Light

2. Artificial Light Can Be Turned Off and On Examples: – Classroom light – Lamp – Flashlight – Light bulbs

3. Natural Light Can Not Be Controlled It comes from nature. Examples: – Fire – Sun – Stars

4. How does light travel Light travels very fast and in straight lines.

5. When does light bounce? Reflection is the bouncing of light off of an object. – You see objects in a mirror because their light is reflected straight back to you.

6. How does light bend? Refraction is the bending of light when it moves from one kind of matter to another. – Light travels at different speeds through different types of matter.

7. Absorption Absorption is the stopping of light when it hits a wall or other opaque object.

8. Opaque A opaque object absorbs or reflects all light so that you can not see through the object. Dark wooden door-Cast a shadow

9. Translucent A translucent object reflects or and absorbs some light. You can see a fuzzy or blurry image when you look through it. – fogged window

10. Transparent A transparent object does not reflect or absorb much light. You can see a clear image when you like through a transparent object. Windows

11. Prisms Prisms are a solid object that bend light – Rain drops – Crystals When white light hits a prism, each color of light bends at a different angle.

12. Bending Light When light is bent by a prism, red light is bent the least and blue light is bent the most.

13. Visible Spectrum Visible Spectrum is made up of all the colors of light that people can see.

14. White Light White Light is made up of many different colors of light.

15. Basic Colors The basic colors are red, blue and green. They will form all other colors. Adding all three of these colors will give us white light.

16. Convex Convex are lenses that magnify and they are thicker in the middle than at the edges. Convex lenses focus the light moving through them into a point.

17. Concave Concave lenses are thicker at the edges than in the middle. The lenses make objects look smaller than they really are. The light that passes through these lenses spreads out in all directions.