Across
- 2. The ability to do work
 - 6. When large amounts of material and coal are removed from the ground
 - 8. When atoms release subatomic particles so they can become more stable
 - 11. energy that moves in the form of waves
 - 13. The cleanest version of burning fossil fuels
 - 15. Energy changes an object position
 - 16. A newer form of extraction
 - 18. Movement and flow of electrons
 - 19. The position or shape of an object in which the energy is
 - 20. The same name for oil
 
Down
- 1. When oil is pushed to the surface by the underground pressure
 - 3. energy that is stored in chemical bonds
 - 4. These are formed from the remains of living animals and plants from millions of years ago
 - 5. converting stored chemical energy into forms we can use for other things
 - 7. Energy that is stored in which atomic nuclei is held together
 - 9. Motion energy
 - 10. Most commonly used fossil fuel
 - 12. Energy that moves in molecules
 - 14. Resources that can be replaced quickly
 - 17. Resources that can not be replaced or used again
 
