Across
- 4. distance from one peak
- 6. mental picture
- 7. object emits light
- 8. has mass
- 9. to give off
- 10. wave carries energy
- 11. speed
- 13. pass through
- 14. peaks of a wave
- 16. range of wavelenghts
Down
- 1. bounce off
- 2. feel
- 3. make things move
- 4. pattern
- 5. invisible light
- 8. group of atoms
- 12. curved line
- 15. max height