chapter 18

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Across
  1. 2. thermal energy conservation a process or technology for producing energy by harnessing the temperature differences thermal guideposts between ocean surface waters and deep ocean waters
  2. 3. fuel renewable organic material that comes from plants and animals
  3. 5. solar heating use solar energy to heat a fluid either liquid or air and transfer the solar heat directly to interior space or to a storage system for later use
  4. 7. conservation the prevention of the wasteful use of energy especially in order to ensure its continuing availability
  5. 8. energy heat within the earth an area of land with a group of energy producing windmills or wind turbines
  6. 9. cell a cell producing an electric current directly from a chemical reaction
Down
  1. 1. solar heating The use of the suns energy directly for either heating or cooling purposes
  2. 4. energy energy from a square that is not depleted when used such as wind or solar power
  3. 5. energy energy generated in ways that do not deplete natural resources or harm the environments especially by avoiding the use of fossil fuels and nuclear power
  4. 6. energy a renewable source of energy that generates power by using a dam or diversion structure to alter the natural flow of a river or other body of water
  5. 7. efficacy using less to get the same job done