Across
- 2. ultraviolet light can cause this _________
- 4. The transfer of radiant energy
- 5. The form of energy that you can see
- 8. allowing all light to pass through in a straight line
- 9. Line perpendicular to a surface
- 10. Light making its own light
- 12. Light made by chemical reaction inside the bodies of living creatures
- 13. the angle between the normal line and the reflected ray
- 15. Material that blocks light, preventing light to pass through
- 16. a picture that light makes
- 17. allowing some light to pass, but is scattered from its straight path
- 18. a single line of light that is generated by a light source
Down
- 1. the “bending” of light when it travels from 1 medium to another
- 3. Example of an artificial light source
- 6. chemical reaction that makes light without heat
- 7. reflects almost all the light but absorbs some
- 11. Light that leaves the sun goes through a process called ____________
- 14. the light that strikes a reflecting or refracting object