Geosystems crossword 1

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Across
  1. 4. The theory that the Earth's lithosphere is divided into plates and they move over the surface of the Earth.
  2. 5. Rocks formed after other rocks are weathered, eroded, transported, deposited and compacted into rock.
  3. 6. Set of geological process that relates all three rock classes.
  4. 7. Rigid layer that forms the plates.
  5. 8. Process that forms crystals.
  6. 10. One plate being pushed beneath another into the asthenosphere.
  7. 11. Forms the bulk of the Earth and convects slowly.
  8. 14. Where lithosphere is created.
  9. 17. Naturally occurring, solid, crystalline substance.
  10. 18. The shape that silicon and oxygen ions are arranged in to build up the silicate structure.
  11. 19. The most common type of mineral.
  12. 20. Geophysical boundary between the crust and the mantle.
  13. 21. Liquid part of the Earth that generates the magnetic field.
Down
  1. 1. Rocks formed after other rocks are subjected to pressure (buried) and temperature (heated).
  2. 2. The tendency of minerals to break along a regular plane.
  3. 3. Where lithosphere is destroyed and recycled back into the asthenosphere.
  4. 9. Metallic centre of the Earth.
  5. 12. Rocks formed by crystallisation of molten rock (magma or lava).
  6. 13. Process occurring in the mantle that moves the plates.
  7. 15. Where plates move past one another without being created or destroyed.
  8. 16. Ductile layer on which the plates move.