Unit 6 Crossword

3. A fossil fuel that occurs in underground deposits, composed of a liquid mixture of hydrocarbons, water, and sulfur
4. Energy from steam or hot water produced from hot or molten underground rocks.
5. A resource that has a theoretically unlimited supply and is not depleted when used by humans.
9. The process of extracting oil and natural gas using high pressure water injected into shake deposits
10. converts wind energy into electricity
11. stored energy
13. energy of motion
16. Energy stored in chemical bonds
18. energy from the sun

1. Electricity generated from the energy of moving water
2. the ability to do work
6. total amount of living tissue within a given trophic level
7. Energy from nuclear fission; splitting of atoms
8. Natural resources such as sunlight and wind that are widely available and in no danger of being used up.
11. byproduct of methane or petroleum, used for rural communities where gas lines are unavailable
12. Heat energy
14. A fossil fuel that forms underground from partially decomposed plant material
15. the movement of air caused by differences in air pressure
17. (fuel cell) generates electricity by reacting hydrogen with oxygen