chapter 18 crossword puzzle

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Across
  1. 6. hydroelectric power.
  2. 7. a turbine having a large vaned wheel rotated by the wind to generate electricity.
  3. 8. generate solar power by using mirrors or lenses to concentrate a large area of sunlight onto a receiver.
  4. 9. Method of heat that relies upon the sun to heat either air or liquids in a solar collector,and then distribute that heat throughout the structure.
  5. 10. renewable energy from plants and animals.
  6. 12. form of political power that revolves around populations
  7. 13. a cell having a photovoltaic element mounted for exposure to light and provided with terminals for connection with a sensitive current meter
  8. 14. heating/cooling system for buildings
  9. 15. heat that is generated within the Earth
  10. 16. the process of changing the solar energy stored in the ocean to electric power
  11. 17. a fuel derived directly from living matter.
Down
  1. 1. a type of solar collector consisting of a series of flat glass or plastic plates with black metal surfaces that absorb solar energy
  2. 2. is one of several design approaches collectively called passive solar design
  3. 3. type of hydropower that transforms the movement of the tides into electricity or other practical forms of power.
  4. 4. an area of land with a group of energy-producing windmills or wind turbines.
  5. 5. a cell producing an electric current directly from a chemical reaction.
  6. 11. chemical decomposition produced by passing an electric current through a liquid or solution containing ions.