plate tectonics

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Across
  1. 6. circulatory patterns of heat in the magma believed to be the driving force behind plate movement.
  2. 8. V-shaped valleys that are the deepest parts of the oceans where subduction occurs.
  3. 9. the movment of the ocean floor at a divergent
  4. 10. ocean split down the middle by a big crack
Down
  1. 1. a type of plate boundary where the plates slowly move apart from each other.
  2. 2. the process in which the crust pushes downward into the mantle at a fault line.
  3. 3. earths crust the slowly moves
  4. 4. the remains of ancciant living animals
  5. 5. plate boundary where the plates slowly collide together
  6. 7. the uppermost solid part of the earths crust