Plate tectonics/Earth layers

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Across
  1. 3. synonym for change
  2. 4. theory that explains that continents are not stationary, but move across the Earth's surface is ______ drift theory.
  3. 7. when plates move towards each other
  4. 8. movement of two oceanic plates away from each other
  5. 12. movement of plates because of hot liquid under surface rising
Down
  1. 1. great _______ rift is like a mid-ocean ridge.
  2. 2. plates move away from each other
  3. 3. The lithosphere, which is the rigid outermost shell of a planet, is broken up into ________.
  4. 5. a long high sea wave caused by an earthquake
  5. 6. ____of plate tectonics that says the Earth's lithosphere is divided into about 12 large plates.
  6. 8. when plate goes under another plate
  7. 9. a sudden and violent shaking of the ground, sometimes causing great destruction
  8. 10. A tectonic boundary where two plates are moving away from each other and new crust is forming from magma that rises to the Earth's surface between the two plates is a ______boundary
  9. 11. a long, narrow, deep depression in the ocean floor