Across
- 3. makes things move
- 4. to give off
- 6. height of wave
- 7. invisible violet light
- 9. to take in
- 11. how energy carried
- 12. distance from peak
- 14. to pass through
- 16. to bounce off
- 17. range of wavelengths
Down
- 1. object emits light
- 2. peaks of wave
- 5. group of atoms
- 8. a mental picture
- 10. carries energy
- 12. a curved line
- 13. how something happens
- 15. has mass