ch. 17 vocab

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Across
  1. 2. vertical shafts are are dug deep into the ground
  2. 4. burning :the chemical reaction when fuel combines rapidly with oxygen
  3. 6. a liquid fossil fuel made up mostly of hydrocarbons
  4. 10. stored energy
  5. 11. expression of how much of the enrgy put into a system actually does useful work
  6. 12. type of mining pollution that occurs when oxygen and rainwater react with newly exposed rock that contains iron sulfide
  7. 13. deposit of moist sand and clay that can be mined to exact bitumen
  8. 14. energy prouced by the flow and interactions of electrons
  9. 15. resource that cannoy be replaced
Down
  1. 1. the energy produced by motion
  2. 3. an icelike solid thatcan consists of molecules of methane within a crystal network of water molecules
  3. 5. which layers of surface soil and rock are removed from large areas
  4. 7. energy that can be restored
  5. 8. compund derived from oil that is used to make products
  6. 9. reducing energy use to prolong the supply of fossil fuels
  7. 16. rock that contains hydrocarbons