Energy

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Across
  1. 6. movement of seawater in and out of a cavity on the shore
  2. 7. energy extracted from hot rocks or water beneath the Earth’s surface
  3. 8. comes from sources that will run out
  4. 9. obtained from the fission of uranium atoms
Down
  1. 1. made from decomposing plants and animals
  2. 2. electrical energy obtained from harnessing breeze
  3. 3. energy generated or produced by living or once-living organisms
  4. 4. energy from a source that is not depleted when used
  5. 5. form of energy that harnesses the power of water in motion