Earth Science

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Across
  1. 1. rocks that are formed under immense heat and pressure
  2. 3. the layer of the Earth that is made of liquid iron & nickel
  3. 4. boundary where plates move towards each other
  4. 6. the thinnest layer of the Earth
  5. 7. wearing away and removal of rock
  6. 9. there are three types of these (also called edges)
  7. 10. the process of crust re-entering the mantle after sea floor spreading
  8. 12. breakdown of rock while it remains in one place
  9. 15. squeezing of sediment by weight of overlying layers
  10. 19. rocks that are formed when molten rocks cool and solidifies
  11. 20. boundary where plates move away from each other
  12. 21. molten rock above the Earth's surface
  13. 22. molten rock underneath the Earth's surface
  14. 23. a volcano that has not been active for some time
  15. 24. the type of weathering done by animals and plants
Down
  1. 2. boundary where plates slide past each other
  2. 5. a volcano that will never erupt again
  3. 8. the layer of the Earth that is made of solid iron & nickel
  4. 10. rocks that are formed from weathering and erosion followed by compaction and cementation
  5. 11. the type of weathering done by chemicals
  6. 13. the reason why the inner core is solid and the outer core is liquid
  7. 14. "gluing" together of sediment by minerals and crystals
  8. 16. the only layer of the Earth that is a mix of solid and liquid
  9. 17. the type of weathering done by temperature or forces
  10. 18. the place under water where sea floor spreading originates from