Across
- 2. light that was created by man
- 4. energy created by motion
- 6. the study of light
- 7. energy that can be seen by human eyes
- 10. energy that is created by nuclear activity
- 11. light passes through a solid object
- 12. energy created by chemicals
- 14. light source that turns ultraviolet light to turn into a particle then into visible light
- 16. light gets absorbs by a solid object
- 17. material that allows for some not all light to get through
- 19. emits light
- 20. energy created by heat
- 22. light reflects off a solid object
- 24. light created that wasn't created by man
- 25. electricity heats up a filament causing light
Down
- 1. chemical reaction happens in an organism causing light
- 3. material that allows all light to go through
- 5. electrical that turns into visible light
- 8. chemical reaction causes a light source to be made
- 9. the inventor of physics and optics
- 13. energy that is created by electricity
- 15. material that allows no light to pass through
- 18. doesn't emit light or reflects light
- 21. similar to fluorescent light but lasts longer
- 23. the path light takes