Renewable Energy Crossword Puzzle

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Across
  1. 3. Fuels made of biomass.
  2. 5. When water is separated into hydrogen and oxygen through an electrical current to create hydrogen fuel.
  3. 11. This is an electricity that is made when biomass goes through combustion.
  4. 12. When this technology absorbs sun, electrons in one of two silicon plates move to the other plate. Then the electrons move back to the original plate as the technology absorbs the sun.
  5. 14. Large areas that have a lot of wind turbines.
  6. 15. Fuel made of alcohol and gasoline.
  7. 16. Energy that is made from water and its kinetic energy.
  8. 17. This is heat that is created when there is high pressure and radioactive substances breaking up underground. This heat can be used as an energy source.
  9. 18. This fuel is created when sugar or a kind of starch is fermented. This is often made of corn in the United States.
  10. 20. This technology absorbs heat through a glass plate on top of a metal plate. The heat then transfers to fluid inside of tubes that are inside of the metal plate. The fluid then moves around the building to heat it.
Down
  1. 1. When a building is made to take in the sun's heat. store it, and move it around a building. Greenhouses use this kind of heating.
  2. 2. Fuel made of oil that's made of vegetables. It is often combined with diesel made of petroleum.
  3. 4. When energy is created by the ocean's tides.
  4. 6. This is when eletrical energy is converted from thermal energy in the ocean. This is also known as OTEC.
  5. 7. This kind of heating uses technology that takes in the sun's heat, stores it, and moves it around a building. Solar panels are used for this ind of heating.
  6. 8. When mirrors direct sunlight to a 'power tower' to create power.
  7. 9. This is made of substances that form organisms or substances that originate from organisms. One example of it is charcoal.
  8. 10. Technology that turns the kinetic energy in wind to electrical energy.
  9. 13. A grouping of pipes underground that heat or cool a building by using soil and water.
  10. 19. This technology works when a chemical reaction between a positive and negative electrode causes there to be an electrical current to move through a wire to the other side of it. This is one way to create power using hydrogen.