Across
- 2. a space rock
- 6. a wave that travels through space.
- 10. the amount of times a wave passes in a given time period
- 12. what does the human eyes see when you combined all the color of the spectrum
- 14. the transfer of energy from one space
- 17. wave that moves parallel to its medium
- 19. what does the human eyes see when theres no colors at all
- 20. heat traveling through empty space
Down
- 1. heat rises, cold/cool sinks
- 3. the distance between one crest to the next
- 4. part of the eye that sends information
- 5. a large mirror for light
- 7. clear surface of eye that allows bends light into lens
- 8. a source to see in darkness
- 9. matter that waves travel through
- 11. heat transfer by direct touch
- 13. black hole in the eye
- 15. wave that is a type of machine wave
- 16. a large source of light
- 18. wave a that needs a medium to trave