Earth's Resources

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Across
  1. 1. behavior that uses technology to do the same job using less energy
  2. 5. one of the largest uses for wood resources
  3. 6. energy type that can be "quickly" replaced
  4. 8. the amount of pore space in a material
  5. 11. process of splitting an atom to produce nuclear energy
  6. 13. process of removing salt from water to make it drinkable
  7. 16. type of energy associated with heat
  8. 17. deposit of mineral that is mined for profit
  9. 18. behavior that uses less energy
  10. 20. made from the prehistoric remains of tropical plants
  11. 21. most of this on Earth is found frozen in ice caps and glaciers
Down
  1. 1. is a secondary source of energy because it is made from another energy source
  2. 2. energy sources that include coal, oil, and natural gas
  3. 3. area of permeable rock or soil that holds large amounts of water
  4. 4. metallic mineral used for wiring and plumbing
  5. 7. water and air are considered _______ resources
  6. 9. type of plate boundary where metallic minerals are often found
  7. 10. one of the 4 R's of sustainability
  8. 12. energy of motion
  9. 14. mineral used for making glass and ceramics
  10. 15. shape and steepness of the land that determines how soil will form
  11. 19. major source of protein for people living near water