Unit 7 - Investigating Plate Tectonics

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Across
  1. 4. huge, violent eruptions that produce greater than 1,000 cubic kilometers of Earth material
  2. 5. occurs where two plates move away from each other
  3. 6. the law that says that younger rock layers sit on top of older rock layers
  4. 8. occurs where two plates move toward each other;
  5. 9. the theory that the crust is divided into large pieces that slowly move on top of the mantle
  6. 11. the process in which a denser plate is pushed downward beneath a less dense plate when plates converge
  7. 12. the result of two tectonic plates sliding past each other
Down
  1. 1. huge piece of crust that slowly moves on the upper, ductile part of the mantle
  2. 2. found in the ocean when magma escapes from the crust
  3. 3. event in which molten rock spews out from the mantle to the surface of Earth as ash, lava, and gases
  4. 7. Occurs where two plates slide past each other.
  5. 10. a place where two tectonic plates slide past each other