Chapter 18 Crossword

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Across
  1. 3. A cell producing an electric current directly from a chemical reaction
  2. 7. A plant-based material used as fuel
  3. 9. Energy collected from renewable resources
  4. 10. Energy generated in ways that do not deplete natural resources or harm the environment
  5. 11. A colorless volatile flammable liquid that is produced by the natural fermentation of sugars
  6. 12. An electrical device that converts the energy of light directly into electricity
  7. 13. The goal to reduce the amount of energy
  8. 15. The generation of electricity and other energy jointly
  9. 17. Uses the ocean thermal gradient to produce energy
Down
  1. 1. The prevention of the wasteful use of energy or the principle by which the total energy remains constant in a system that is not subject to external influence
  2. 2. Electricity produced from hydropower
  3. 4. The use of the sun's energy directly for heating or cooling purposes
  4. 5. The use of the sun's energy either as heat or electricty to augment heating systems
  5. 6. A form of power produced by the natural rise and fall of tides
  6. 8. The thermal energy in the Earth's crust
  7. 14. An area of land with a group of energy-producing windmills or wind turbines
  8. 16. A colorless, odorless flammable gas