Plate Tectonics

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Across
  1. 1. Two plates that have collided into each other are called what?
  2. 4. A theory that plates move due to convection currents.
  3. 5. A large super continent that existed over 250 million years ago.
  4. 7. When two plates slide by each other in opposite directions.
  5. 9. Its the longest mountain range in the world.
  6. 10. Earths lithosphere is broken into how many major plates?
Down
  1. 2. Two plates pulled apart are called what?
  2. 3. A more dense plate is forced under a less dense plate is called what?
  3. 6. Who named the continental drift?
  4. 8. What are Giant pieces of earths crust that move due to convection currents.