Plate Tectonics Crossword Puzzle by:Katelyn Roberts

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Across
  1. 2. Boundary/ 2 plates slip past each other
  2. 4. Tectonics/ Pieces of Earth's Lithosphere are in slow, constant motion driven by convection currents
  3. 5. spreading/ adds new material to the sea floor
  4. 6. discovered sea-floor spreading
  5. 7. process by which ocean floor sinks beneath a deep ocean trench and back into the mantle
  6. 8. Drift/ Wegeners idea that the continents slowly moved over Earth's surface
  7. 12. a fold in the rock that bends upwards
  8. 14. Boundary/ 2 plates come together
  9. 17. amount of space a rock takes up
  10. 18. The point on the surface directly above the point at which the earthquake occurs
  11. 19. a fold in rock that bends downward
  12. 21. Large area of flat land elevated high above sea level
  13. 22. The point beneath Earth' surface at which rock under stress breaks and triggers an earthquake
Down
  1. 1. force that squeezes rock until it folds or breaks
  2. 3. Fracture along Earth in which movement occurs
  3. 9. The shaking and trembling that results from the movement of rock beneath Earth's surface
  4. 10. measurement of earthquake's strength
  5. 11. force that acts on the crust to change its volume or shape
  6. 13. stress that pushes rock in 2 opposite directions
  7. 15. force within Earth that pulls rock apart; often causing rock to break
  8. 16. Boundary/ 2 plates move apart
  9. 20. Super-continent