puzzleschapter 7 Joel lacrone

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Across
  1. 2. continents are in motion
  2. 4. slab sings it pulls on the rest of the plate with a force
  3. 5. cold and rigid outermost rock layer
  4. 11. circulation of materials caused by differense
  5. 12. rising mantal materail at mid ocean ridges
  6. 13. form where two plates slide past eacheother
  7. 14. a state in which mangetized objects point north
Down
  1. 1. forms where two plates separate
  2. 3. where to plates collide
  3. 6. a theory that all the continents were together
  4. 7. mountain ranges in the middle of the ocean
  5. 8. magnetic field reverses polarity magnetized objects point south
  6. 9. denser plates sinks below themore buoyant plate
  7. 10. new crust forms along a midocean ridge
  8. 15. tectonics earths surface is made up of rigid rocks