Energy

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Across
  1. 2. natural underground pressure pushes oil to the surface
  2. 4. an unstable atom (fuel for a nuclear reactor)
  3. 5. energy stored in chemical bonds between atoms and molecules
  4. 7. used when coal deposits are deep underground
  5. 9. commonly used process for converting stored chemical energy
  6. 11. energy of an object due to its position or shape
  7. 12. energy required to move/change an objects position
  8. 13. used when coal deposits are near the surface
  9. 15. initial pressure diminishes so water of gas is pumped through to push out the oil
  10. 16. These are resources which can never be replaced, or are replaced too slowly
  11. 19. another name for hydraulic fracturing
  12. 20. is considered the worst man-made ecological disaster
  13. 21. the ability to do work
Down
  1. 1. the cleanest burning fossil fuel
  2. 2. formed from the compression of dead plant material
  3. 3. energy stored in forces holding atomic nuclei together
  4. 6. the energy of motion
  5. 8. where a large nucleus is broken, two small isotopes of hydrogen fuse to form helium
  6. 10. energy emitted in the form of waves
  7. 14. generally readily available, and are replaced quickly or continually.
  8. 17. energy associated with the movement/flow of electrons
  9. 18. energy of the movement of molecules