Across
- 1. an object that allows light rays to pass through it
- 5. a straight line of light
- 8. a light source that can make its own light
- 9. a transparent material used to refract light
- 11. a form of energy
- 12. the bending of light as it passes from one substance to another
- 13. a light source that cannot make its own light
Down
- 2. the bouncing of light off an object
- 3. when an object soaks in some colors of light
- 4. an object that allows some light rays to pass through it
- 6. a dark shape or area caused when an object blocks a light source
- 7. all the colors that make up light
- 10. an object that does not allow light rays to pass through it