matthews plate techtonics

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Across
  1. 3. plates come together at these boundaries (10)
  2. 4. oceanic plate near South America (5)
  3. 6. landforms formed by underwater volcanic activity (7)
  4. 8. erupt where magma reaches the surface (9)
  5. 9. lighter plate that forms mountains (11)
  6. 12. boundary where plates collide (11)
  7. 13. type of plate that sinks into the mantle (7)
  8. 14. boundary where plates pull apart (12)
  9. 15. formed underwater at constructive boundaries (6)
Down
  1. 1. example ridge at a constructive boundary (10)
  2. 2. another word for pulling apart (9)
  3. 5. currents in the mantle causing movement (10)
  4. 7. cracks where magma rises through (8)
  5. 10. example mountain range at destructive boundary (5)
  6. 11. layer where oceanic plate is destroyed (6)