mining

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Across
  1. 3. the layer of the earth containing all 'air'
  2. 6. when rocks are brought to the surface
  3. 9. inner most layer of the earth
  4. 10. the scale of how hard a mineral is
  5. 11. igneous rocks formed above the earth
  6. 12. a resource that is found in nature is said to be
  7. 14. how shiny a mineral is
  8. 15. the elements on the left side of the periodic table
  9. 17. a common aluminium ore
  10. 18. outer most layer of the earth
  11. 19. when a rock is broken
  12. 20. rock type formed from small fragments
  13. 22. the raw material mined from the earth that we refine
  14. 23. a second type of fossil
  15. 24. a type of fossil
  16. 26. right side of the periodic table
  17. 27. a resource that cannot be reused
Down
  1. 1. all of the water on the planet
  2. 2. when eroded pieces of rock move to new place
  3. 4. a resource that can be used over and over again
  4. 5. the layer of the earth all mining is in
  5. 7. the type of mining that uses huge pits to
  6. 8. heat and pressure makes these types of rocks
  7. 13. a common lead ore
  8. 16. what fossilised tree sap is called
  9. 20. the name of the theory that all rock layers above others must be younger
  10. 21. when parts of a rock are removed by air or water
  11. 25. thickest layer of the earth