Across
- 2. hot objects produce it
- 4. all warm objects give off these rays
- 5. you can use it to split light into a spectrum
- 8. light is a form of ___________.
- 10. scattered light causing a milky appearance
- 12. these are needed to produce solar power
- 13. small particles of light energy
Down
- 1. the color of a surface not reflecting any light
- 3. allows nearly all light through "see-through"
- 6. a substance that does not let light through
- 7. one of the two shortest wavelengths
- 9. light travels in this kind of line
- 11. the color of the longest wavelength
- 14. a source of electromagnetic waves