PLATE TECTONICS CROSSWORD PUZZLE

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Across
  1. 5. The circulation of material caused by differences in temperature and density.
  2. 6. All the continents that were once part of a supercontinent.
  3. 9. Forms where two plates slide past each other.
  4. 11. A state in which magnetized objects orient to the south.
  5. 12. The process by which new oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away from the ridge.
  6. 14. Theory that Earth's surface is made of rigid slabs of rock, or plates, that move with respect to each other.
  7. 15. The process that results when a dense oceanic plate sinks beneath a more buoyant plate along a subduction zone, pulling the rest of the plate that trails behind it.
  8. 17. Forms where two plates separate.
  9. 19. Fossil of a plant found in rocks from different continents.
  10. 20. Proposed the hypothesis of continental drift.
Down
  1. 1. A state in which magnetized objects orient to the north.
  2. 2. The cold and rigid outermost rock layer.
  3. 3. Occurs and the magnetic field reverses direction.
  4. 4. The mountain ranges in the middle of the oceans.
  5. 7. Suggested that continents are in constant motion on the surface of Earth.
  6. 8. Forms where two plates collide.
  7. 10. Deep scratches in rocks made as the glaciers moved across land.
  8. 13. When denser plate sinks below the more buoyant plate.
  9. 16. The partially melted portion of the mantle below the lithosphere.
  10. 18. The process that results when magma rises at a mid-ocean ridge and pushes oceanic plates in two different directions away from the ridge.