Plate Tectonics by Emily Grugan

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Across
  1. 3. A break in the Earth's crust
  2. 5. Point of Earth's surface directly above an earthquake's focus
  3. 6. Outermost, rigid layer of the Earth
  4. 8. Boundary between two colliding plates
  5. 11. The bending of rock layers
  6. 12. Theory that continents drift apart
  7. 14. Single large landmass made up of all the continents connected together that broke apart 200 million years ago
  8. 15. Piece of the lithosphere that moves on the asthenosphere
  9. 18. Outermost layer of the Earth
  10. 19. Boundary between two plates moving away from each other
  11. 20. Device used by seismologists to record primary, secondary, suface waves from earthquakes
Down
  1. 1. Layer between the crust and the core
  2. 2. new lithosphere is created here
  3. 4. Soft layer of the mantle
  4. 7. A region where a an oceanic plate sinks down into the athenosphere
  5. 9. Solid, dense center of the Earth
  6. 10. Liquid layer of the Earth's core
  7. 13. Boundary between two plates that are sliding past each other
  8. 16. A squeezing force
  9. 17. A pulling force