Energy and Material Resources

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Across
  1. 2. The percentage of energy that is used to preform work.
  2. 4. An energy-rich substance formed from the remains of organisms.
  3. 5. Heat from Earth's interior.
  4. 7. Material that blocks heat transfer between the air inside and outside a building.
  5. 10. A resource that is either always available or is naturally replaced relatively quickly.
  6. 12. energy-rich chemical compound that contains carbon and hydrogen atoms.
  7. 14. A change from one form of energy to another; also called a energy coversion.
  8. 18. Energy from the sun
  9. 20. A compound made from oil.
  10. 21. Liquid fossil fuel;oil
  11. 24. The process of buring a fuel
Down
  1. 1. Electricity produced using the energy of flowing water.
  2. 3. The central core of an atom that contains the procons and neutons.
  3. 6. The practice of reducing.
  4. 8. A mixture of gasoline and alcohol.
  5. 9. A substance that provides energy as the result of a chemical change.
  6. 11. The splitting of an atom's nucleus into two smaller nuclei and neutron.
  7. 13. Fuel made from living things.
  8. 15. The part of a nuclear reactor.
  9. 16. The daily rise and fall of Earth's waters on its coastlines.
  10. 17. A uranium rod that undergoes fission in s nuclear reactor.
  11. 19. The combining of two nuclei to produce a single larger nucleus and much energy.
  12. 22. A factory in which crude oil is heated and seperated into fuels and other prodcuts
  13. 23. A dangerous condition in which fuel rods inside a nuclear reactor melt.