Plate Tectonics Chapter 7 Vocab Alisha Trainor

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Across
  1. 4. All continents were once part of one continent
  2. 5. when the new oceanic crust forms along the mid-ocean ridge and old crust moves away
  3. 6. mountain ranges in the middle of the ocean
  4. 8. when the magnetic field reverses direction
  5. 10. cold and rigid outermost rock layer
  6. 11. two plates separating
  7. 12. when two plates slide past eachother
  8. 13. denser plate descends into earth's plate boundary
Down
  1. 1. when magnetized object point north
  2. 2. when two plate collide
  3. 3. when magnetized object reverse and point south
  4. 7. slabs of rock or plates
  5. 9. all continents are in constant motion