Plate Tectonics Introduction

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Across
  1. 8. A light-colored rock that is formed by melted crust erupting at the surface of the earth.
  2. 9. This theory is the brainchild of Harry Hammond Hess
  3. 14. This place had plants at one point, but no longer does.
  4. 16. Wegener's burial place
  5. 17. An undersea mountain chain that runs through the oceans
  6. 19. A movement of materials driven by heating at lower areas.
Down
  1. 1. These two continents look like they fit together well
  2. 2. the parts of the ocean where old crust is destroyed.
  3. 3. Expedition that sampled rock ages of the ocean floor.
  4. 4. one "dead" on piece of evidence for Wegener.
  5. 5. A landform that is made by Plate tectonics
  6. 6. The supercontinent that is theorized by Wegener (American spelling)
  7. 7. This man was the father of continental drift theory
  8. 10. Mantle material the flows under heat and pressure. The plates float on top of this layer
  9. 11. The theory that says earth's crust is broken into plates that move around on the upper mantle.
  10. 12. The crust and upper part of the mantle that is solid.
  11. 13. A hard, dark-colored rock that forms much of the seafloor
  12. 15. Pangea is Greek for ___________.
  13. 18. When materials are heated, they become less dense and will_______.