Renewable & Nonrenewable Energy

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Across
  1. 2. The production of two useful forms of energy from the same fuel source.
  2. 6. A device used to initiate and control a sustained nuclear chain reaction. Surrounded by thick pressure vessel that is filled with a cooling liquid. The pressure vessel contains any products in case of an accident.
  3. 8. Oil that is pumped from the ground, or crude oil.
  4. 9. A mixture of gasoline and ethanol which produces less air pollution than fossil fuels.
  5. 12. The energy within the nucleus of an atom, which fuels nuclear power plants.
  6. 13. Electricity produced in a small stream without having to build a big dam. This uses instruments such as floating turbines.
  7. 15. This uses the temperature difference in surface and deep ocean waters in the tropics to generate electricity.
  8. 16. Energy from the sun that is gathered by collectors and used to heat water or to heat a building.
  9. 17. A wheel that changes the force of a moving gas or liquid into energy that can do work.
  10. 18. Energy that comes from sources that will eventually run out, or will not be replenished in our lifetimes.
  11. 20. Uses sun's energy to heat something directly.
  12. 22. Tidal movement from oceans are used to generate electricity much like a hydroelectric dam. High tides trap water behind a dam, and when the water is released during low tide it turns a turbine producing electricity.
  13. 23. A long loop of piping that circulates fluid underground to warm and cool homes. In summer it cools a home and in winter it warms a home.
  14. 24. The percentage of energy put into a system that does useful work.
Down
  1. 1. The movement of wind is converted into electrical energy, and it the fastest growing source of of energy in the world
  2. 3. Energy sources that are still in development. For it to be viable it must prove to be cost effective and have acceptable environmental impacts.
  3. 4. Energy from sources that are constantly being formed.
  4. 5. Solar cells that convert the sun's energy into electricity.
  5. 7. Saving energy by using energy-efficient devices, wasting less energy, etc.
  6. 10. Energy produced from moving water, a renewable energy resource that accounts for 20% of the earth's electricity.
  7. 11. Plant material, manure, and any other organic matter that is used as an energy source.
  8. 14. Energy from the heat in the earth's crust is used to generate electricity.
  9. 19. A machine that converts mechanical energy, or motion, into electrical energy.
  10. 21. Electricity is produced chemically by combining hydrogen fuel with oxygen from the air.
  11. 25. A natural resource that comes from the remains of ancient organisms that changed into coal, oil, or natural gas.