Across
- 6. To bounce light off a surface
- 8. How often a wave repeats
- 11. Allows most light to pass through
- 14. When light bounces off a surface
- 15. Earth’s main natural light source
- 18. A straight line showing the path of light
- 19. To take in light instead of reflecting it
- 21. To move back and forth
- 23. A form of energy that allows us to see
- 24. All the colors of visible light
Down
- 1. What we see when light is reflected from an object
- 2. How fast light travels
- 3. When light bends as it moves through different materials
- 4. The ability to do work or cause change
- 5. How strong or intense a light is
- 7. Allows some light to pass through, but scatters it
- 9. Something that gives off light
- 10. The distance between wave peaks
- 12. A tool that separates white light into colors
- 13. A curved piece of glass or plastic that bends light
- 15. A dark area made when light is blocked
- 16. A smooth surface that reflects light clearly
- 17. Does not allow light to pass through
- 20. A way energy travels through space
- 22. The direction at which light hits or leaves a surface