Across
- 4. Light moves in...
- 6. Does not let any light pass through
- 8. Reflects light from sun
- 9. Light that is made by humans
- 10. Our biggest source of light
- 11. Light that is found in nature
- 12. Like a sponge does to water
- 13. Light and heat energy for cavemen
Down
- 1. Lets some light pass through
- 2. Opaque objects can make these
- 3. A fire produces light AND ________ energy
- 5. Light bounces or ________ off a mirror
- 7. Transparent obects let _____ light through
- 9. A bioluminescent sea creature