Across
- 3. to send something across places; to pass along
- 5. combination of all colors
- 6. Permitting light to pass through, but not transparent
- 7. reflection of light in all directions
- 8. light distance travels in years (5.88 trillion)
- 9. not letting light through
- 11. A space where no particles of matter exist
Down
- 1. light that gives off heat
- 2. light with wavelengths shorter than those of visible
- 4. tiny pieces of light
- 6. Allowing light to pass through
- 10. A piece of glass that separates white light into colors of the spectrum.
- 12. to take in