Energy

2. natural underground pressure pushes oil to the surface
4. an unstable atom (fuel for a nuclear reactor)
5. energy stored in chemical bonds between atoms and molecules
7. used when coal deposits are deep underground
9. commonly used process for converting stored chemical energy
11. energy of an object due to its position or shape
12. energy required to move/change an objects position
13. used when coal deposits are near the surface
15. initial pressure diminishes so water of gas is pumped through to push out the oil
16. These are resources which can never be replaced, or are replaced too slowly
19. another name for hydraulic fracturing
20. is considered the worst man-made ecological disaster
21. the ability to do work

1. the cleanest burning fossil fuel
2. formed from the compression of dead plant material
3. energy stored in forces holding atomic nuclei together
6. the energy of motion
8. where a large nucleus is broken, two small isotopes of hydrogen fuse to form helium
10. energy emitted in the form of waves
14. generally readily available, and are replaced quickly or continually.
17. energy associated with the movement/flow of electrons
18. energy of the movement of molecules