Plate Tectonics Crossword

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Across
  1. 2. the direction magnetic objects point in reversed polarity
  2. 4. what forms above the subducting plate
  3. 7. where seafloor spreading occurs
  4. 8. what occurs when two plates slide past each other
  5. 11. what forms where two plates collide
  6. 14. the process where a dense plate sinks under another
  7. 15. the scientist that suggested plate tectonics
  8. 16. rising mantle creates the potential for plates to move away from the ridge
  9. 18. the direction magnetic objects point in normal polarity
Down
  1. 1. the type of convergent plate boundary that causes volcanoes
  2. 2. when a sinking slab pulls the rest of the plate
  3. 3. the circulation of material caused by differences in temperature and density
  4. 5. what forms where two plates seperate
  5. 6. what states that earth's surface is made of plates that move
  6. 9. what occurs when the magnetic field reverses
  7. 10. the cold and rigid outermost rock layer
  8. 11. the theory that suggests the continents are constantly moving
  9. 12. the layer under the lithosphere
  10. 13. the name of the smallest plate
  11. 17. the theory of all continents joined as one