Plate Tectonics

Edit Answers
12345678910
Across
  1. 1. theory of the formation and movement of plates that cover the Earth's surface.
  2. 4. forms when two lithospheric plates slide past each other.
  3. 5. form when two lithospheric plates move apart.
  4. 7. giant land mass when all the continents were all joined together over 300 million years ago.
  5. 8. the partially melted layer of the mantle that underlies the lithosphere.
  6. 9. the outer shell of Earth that extends to a depth of 100 km.
  7. 10. states that youngest rocks of ocean floor are at diverging boundaries, moving outward.
Down
  1. 2. forms when two lithospheric plates come together.
  2. 3. a number of rigid, but moving, pieces of the Earth's surface.
  3. 6. the theory that all continents are fragments of Pangaea now drifting apart.