tectonic vocab crossword

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Across
  1. 3. theory that the continents broke apart during jurassic times
  2. 4. mountain ranges in the middle of oceans
  3. 6. magnetic fields reverse direction and point geographically south
  4. 9. Process by which oceanic crust forms along a mid ocean ridge and older oceanic crust moves away from the ridge
  5. 10. A state in which magnetic objects will orient themselves to point geographically north
  6. 12. constant motion on the surface of earth
Down
  1. 1. Deep underwater troughs created by one plate subducting under another plate at a convergent plate boundary
  2. 2. when magnetic field reverses direction
  3. 5. A curved line of volcanoes that form a parallel to a plate boundary
  4. 7. ridges that form where blocks of crust move up or down along faults
  5. 8. Parallel ridges that form where blocks of crust move up or down along faults
  6. 11. Made up of layers that are folded