Plate Tectonics

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Across
  1. 2. The age of the oldest continent
  2. 5. A plate boundary where to plates slide past each other
  3. 8. A big puff of hot mantle coming up from deep in the earth
  4. 10. Molten rock under the surface of the earth
  5. 12. She helped prove the theory of plate tectonics
  6. 13. Anything having to do with vibration in the earth’s crust
  7. 16. A period in history when glaciers covered most of the earth
  8. 17. A plate boundary where plates move away from each other
  9. 19. When the earth’s plates split apart from each other
  10. 20. Where the crust is being pulled apart to form a trench
Down
  1. 1. Part of the upper mantle that is solid but can flow
  2. 3. Another word for the crust of the earth
  3. 4. Alfred Wegener’s hypothesis
  4. 6. It uses sound to detect things on or under water
  5. 7. Movement in the mantle because of changes in temperature
  6. 9. The study of the bottom of bodies of water
  7. 11. An area that surrounds most of the Pacific Ocean where a lot of volcanoes erupt and earthquakes happen
  8. 14. A supercontinent
  9. 15. This volcano is located in Pompeii and erupted in 79 CE
  10. 18. The part of the earth’s surface right above the starting point of an earthquake