Plate Tectonics 1

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Across
  1. 4. mostly solid rock flowing under high temperature and pressure
  2. 5. chain of volcanic landforms that result as magma formed through the melting of subducting plate rises and emerge as volcanoes
  3. 9. movements of heat within the mantle
  4. 11. formed when a plate converges with an oceanic plate
  5. 13. earth's crusts broken into pieces moving relative to each other
  6. 15. consist mainly of nickel and iron
  7. 16. where plates move away from each other
  8. 17. what happens to the denser plate at convergent plate boundaries
  9. 19. brings rocks close to their melting point for them to be deformed and melted
  10. 21. a linear depression that is formed when land in between two continental crusts sink
  11. 22. lighter rock that has cooled down slowly
  12. 23. heavy dense rock formed from magma which has cooled quickly
Down
  1. 1. consists mainly of basalt
  2. 2. molten rock that reaches the earth's surface
  3. 3. molten rock beneath the earth's crust
  4. 6. where older crust is destroyed and recycled
  5. 7. outermost layer of the earth
  6. 8. formed when 2 oceanic plates move away from each other
  7. 9. where new crust is formed
  8. 10. consists mainly of granite
  9. 12. where plates move towards each other
  10. 14. consists of the crust and uppermost mantle
  11. 18. where plates slide past each other
  12. 20. when denser plate subducts under, dragging the rest of the plate into the mantle