Plate Tectonics

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Across
  1. 2. the alignment of magnetism in rock
  2. 4. Hawaii for example
  3. 5. force of gravity moves a plate down
  4. 9. Earth's magnetic poles change places
  5. 10. tectonic plate as its edge subducts
  6. 13. thinner, more dense, younger crust
  7. 14. plates slide past each other
  8. 17. plates move towards each other
Down
  1. 1. the large ocean covering Earth 225 mya
  2. 3. records ground movements
  3. 6. line on maps with points of same age
  4. 7. move due to convection currents
  5. 8. plates move apart
  6. 11. The process that creates new sea floor
  7. 12. A supercontinent 225 mya
  8. 15. a graph of earth's movements
  9. 16. resistance to flow