Across
- 3. mineral
- 4. any material that attracts iron
- 5. energy stored energy
- 6. when something changes chemically
- 12. when the force does not equal zero
- 15. the volume of an object
Down
- 1. the vector sum of all the forces
- 2. what keeps us on earth
- 7. amount of thermal energy
- 8. the number of protons in the nucleus
- 9. how fast an object is
- 10. when both equal in size and opposite in direction
- 11. a material that does not allow electrical charges
- 13. energy in motion
- 14. what allows us to breathe