PLATE TECTONICS

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Across
  1. 2. movement of the edge of one tectonic plate under another.
  2. 3. a land mass that projects well above its surroundings; higher than a hill
  3. 6. the solid part of the earth consisting of the crust and outer mantle
  4. 7. molten rock in the earth's crust
Down
  1. 1. drift the gradual movement and formation of continents (as described by plate tectonics)
  2. 4. shaking and vibration at the surface of the earth resulting from underground movement along a fault plane or from volcanic activity.
  3. 5. a fissure in the earth's crust (or in the surface of some other planet) through which molten lava and gases erupt