Plate Tectonics

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Across
  1. 3. The theory that the earths crust is cracked into many large pieces
  2. 5. to the movement of the tectonic plates.
  3. 6. The separating of continents
  4. 8. The instrument that detects the seismic waves from an earthquake.
  5. 9. The process of continents breaking up and allowing in the sea floor.
  6. 10. The shaking wave like movement of the ground during an earthquake.
  7. 14. The crust that forms continents.
  8. 15. Molten rock that has erupted on the Earth's surface
  9. 16. Molten rock below the Earth's surface.
Down
  1. 1. The point of the Earth's centre directly above the focus of an earthquake.
  2. 2. The process of the new crust forming at the ocean ridges and spreading outwards.
  3. 4. The process of the crust sinking down into the Earth
  4. 7. A giant wave in the ocean,caused by an earthquake occurring on the sea floor
  5. 11. Rapid movement of the ground due to movement of the tectonic plates.
  6. 12. A point where extremely hot materials erupts at the surface.
  7. 13. A deep trench on the ocean floor that is of greater depth than the rest of the ocean