Plate tectonics

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Across
  1. 1. continents are in constant motion on the surface of earth
  2. 3. New oceanic crust forms along a mid-ocean ridge and older oceanic crust move away from the ridge
  3. 5. magnetic field reverses directions
  4. 6. the cold and ridge outermost rock layers are called
  5. 8. continents were once part of a supercontinent called
  6. 10. The mountain range in the middle of the ocean are called
Down
  1. 2. Forms where two plates seperate
  2. 4. polarity, magnetic objects such as compass needles , will orient themselves to point north
  3. 7. earths surface is made of ridge slabs of rocks or plates , that move with respect to each other
  4. 9. polarity, reverse direction and orient themselves and point south