Earthquakes, Volcanoes, and Plate tectonics Crossword Puzzle

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Across
  1. 4. The theory that the continets are slowly drifting farther apart
  2. 5. Theory that pieces of the Earth's lithosphere are in motion,driven by convection currents in the mantle
  3. 6. A deep valley where two plates move apart
  4. 8. When something molten adds crust to the ocean floor
  5. 10. The theory that all of the continets used to all be together which formed _______.
  6. 13. When two plates move side by side in opposite directions and create an earthquake.
  7. 14. The massive chunks of the crust that shifts evry so often
  8. 15. The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary
  9. 16. The borders of the tectonic plates; usually looks like a massive trench
Down
  1. 1. The man that discovered plate tectonics
  2. 2. Cause the plates to move; between the lithosphere and the asthenosphere
  3. 3. The undersea mountain mountain chain where new ocean floor is produced; a divergent plate boundary
  4. 7. When two plates move away from each other and create a volcano.
  5. 9. When a tectonic two teconic plate suddenly shift pass eachother
  6. 11. When two tectonic plates move in the opposite direction of the other and create a ______.
  7. 12. A deep canyon on the ocean floor