Continental Drift and Plate Tectonics

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Across
  1. 2. Mountain ranges in the middle of the oceans
  2. 3. This was suggested by Alfred Wegener stating that continents were in constant motion on the surface of Earth
  3. 6. _____ boundary is where 2 plates slide past each other
  4. 7. Fossils of _____ have been found where they could not grow today
  5. 8. Process by which new oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away from the ridge
  6. 9. Earth's surface is made of rigid slabs of rock, or plates, that move
  7. 10. _____ boundary is where 2 plates are spreading apart
  8. 11. Name of the supercontinent that began to break apart over 200 million years ago
Down
  1. 1. _____ boundary is where 2 plates are colliding
  2. 4. The process of one plate moving below another plate
  3. 5. Circulation of magma caused by differences in temperature and density