Final Review T2

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Across
  1. 2. deep beneath earths surface
  2. 4. the plastic layer within the mantle
  3. 5. when sedimentary rocks over-lie non sedimentary rocks
  4. 7. fossil fuels and nuclear power plants.
  5. 8. small crystals formed on earths surface
  6. 9. determining the order of rocks without dates
  7. 10. in undisturbed rock layer, the oldest is on the bottom and the youngest is on the top
  8. 13. group of crust from uppermost mantle
  9. 15. and intrusion or fault is younger than any rocks it cuts across
  10. 16. occurs when layers invloved are both sedimentary rocks
  11. 18. sedimentary rocks are deposited in horizontal or nearly horizontal layers
Down
  1. 1. the thick middle layer in the solid part of earth
  2. 3. this pattern was symetrical on the seafloor
  3. 6. occurs when folding or faulting makes the layers angle
  4. 11. large crystals formed underground
  5. 12. dense ball of solid iron crystals
  6. 14. as a slab or dense plate, sinks, it pulls on the rest of the plate
  7. 17. rising material creates the potential for plates to move away from the ridge
  8. 19. the dense metallic center of earth
  9. 20. on earths surface