Plate Tectonics Vocab

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Across
  1. 2. the boundary between 2 plates that slide past each other.
  2. 4. Boundary between 2 plates that move away from each other.
  3. 6. circulation of particles caused by differences in thermal energy and density.
  4. 7. Theory that the Earth is broken into large, rigid pieces that move.
  5. 11. When magnetic objects point North.
  6. 13. Magma pushing plates in 2 different directions at a mid-ocean ridge
  7. 14. A dense ocean plate sinking beneath a more buoyant plate at a subduction zone.
Down
  1. 1. The boundary between 2 plates that move toward each other
  2. 3. the movement of Earth's continents over time.
  3. 5. Long narrow mountain range on the ocean; formed by magma at divergent boundaries.
  4. 8. The rigid outermost layer of the Earth; includes uppermost mantle and crust.
  5. 9. Name given to a supercontinent that broke apart 200 mya
  6. 10. an event that causes a magnetic field to reverse direction.
  7. 12. The process of one plate moving under another.