Plate Tectonics Voc.

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Across
  1. 1. the outermost layer of the Earth
  2. 2. currents inside the mantle that make the plates move
  3. 3. the theory that states the Earth's surface is made of rigid slabs of rocks or plates that move with respect to each other
  4. 8. the boundary where plates move away from each other
Down
  1. 1. boundaries the boundary between two plates moving together
  2. 4. the inner most layer of Earth that is a solid sphere
  3. 5. the thickest layer of Earth that is located under the crust
  4. 6. the supercontinent that existed 250 millon years ago
  5. 7. the hypothesis that suggests that continents are in a constant motion and have moved to their current location from a single landmass
  6. 9. the layer of Earth that is make of liquid iron and nickel