Fossil Fuels

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Across
  1. 5. a resource that cannot be restored as quickly as it is used
  2. 6. petroleum is used to produce ________, waxes and plastics
  3. 7. a form of energy resulting from the flow of charged particles
  4. 9. natural gas is this type of fossil fuel
  5. 11. a solid fossil fuel that forms from the remains of plants
  6. 12. petroleum is this type of fossil fuel
Down
  1. 1. a gaseous fossil fuel that forms from the remains of marine organisms buried in deeper and hotter regions than oil
  2. 2. a fuel formed from the fossilized remains of organisms
  3. 3. coal is used to produce electricity and _____
  4. 4. a liquid fossil fuel that forms from the remains of marine organisms
  5. 8. a resource that can be restored more quickly than it is used up
  6. 10. coal is this type of fossil fuel