Across
- 3. a magnetic pull
- 5. fire
- 6. ability to work
- 7. changing position
- 8. a voice
- 13. motion
- 14. quantity
- 15. gears
- 16. thermodynamic equilibrium
Down
- 1. cannot be destroyed
- 2. the sun
- 4. stored energy
- 9. return to original shape
- 10. atomic nuclei
- 11. wires
- 12. chemicals