Science Crossword

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Across
  1. 3. what human activity caused the dust bowl
  2. 5. the action of dividing or splitting something into two or more parts
  3. 7. the process of injecting liquid at high pressure into subterranean rocks
  4. 12. wind energy
  5. 14. excessive grazing which causes damage to grassland
  6. 15. uses dams to turn flowing water into electricity
  7. 16. land is turned gradually into a desert
  8. 17. a fuel derived directly from living matter
  9. 18. a form of energy resulting from the existence of charged particles
  10. 20. used to turn turbine generators
Down
  1. 1. Energy produced by the internal heat of the earth
  2. 2. Energy Geothermal energy used heat energy under the earth's surface to generate heat
  3. 4. energy from a source that is not depleted when used, such as wind or solar power
  4. 6. produced by hydrogen and oxygen fuel cell
  5. 8. energy released during nuclear fission or fusion
  6. 9. energy from the sun is called
  7. 10. Fossil fuel that develops beneath the earth's surface
  8. 11. energy which a body possesses by virtue of being in motion
  9. 13. a natural fuel such as coal or gas, formed in the geological past from the remains of living organisms
  10. 17. organic matter used as fuel
  11. 19. a combustible black or dark brown rock consisting mainly of carbonized plant matter, found mainly in underground deposits and widely used as fuel