Mark Pedersen - Plate Tectonics

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Across
  1. 3. the process of new crust forming at the ocean ridges and spreading out
  2. 4. a big wave in the sea created by an earthquake on the seafloor
  3. 6. the idea that the earth's crust is cracked into lots of large pieces
  4. 8. a deep trench in the ocean floor that is much deeper than the rest of the ocean floor
  5. 9. the crust that makes up the continents
  6. 12. the rapid movement of the earth caused by the movement of tectonic plates
  7. 15. an device that detects the seismic waves from an earthquake
  8. 16. the area on the earths surface right above the focus of the earthquake
Down
  1. 1. a place where magma from inside the earth erupts at the surface
  2. 2. the breaking up of continents by drifting across the oceans
  3. 5. where the crust is sinking down into the earth
  4. 7. molten rock that has erupted from a volcano
  5. 10. the crust that makes up the ocean floor
  6. 11. the shaking and waving movement of the ground during an earthquake
  7. 13. the process of continents breaking up, subsiding and allowing in the sea
  8. 14. molten rock that is still inside a volcano