Plate Tectonics

12345678
Across
  1. 1. a current in a fluid that causes convection
  2. 3. the act of one plate subducting under another
  3. 4. two plates drifting past one another
  4. 7. two plates divide
  5. 8. Alfred Wegener's CDT + Harry Hess's seafloor spreading theory
Down
  1. 2. two plates collide
  2. 5. occur at divergent boundaries
  3. 6. molten rock; hot liquid in the mantle