1. Plates
   1. Float
      1. rock
         1. heavy
         2. semi molten
   2. move
      1. slowly
      2. how?
         1. convection
         2. mantle
      3. Continental Drift
2. Plate Tectonic Model
   1. who
      1. Alfred Wegener
      2. 1912
   2. what
      1. continents
         1. united
         2. pangaea
      2. 200 million YA
         1. split into two
            1. Laurasia
            2. North America
            3. Europe
            4. Most of Asia
            5. Gondwanaland
            6. Australia
            7. Africa
            8. india
            9. South America
      3. further fragmented
         1. plates we know today
   3. not accepted
      1. scientists
         1. hostile
         2. dismissed
      2. 1963
         1. accpted
3. Proof
   1. Sea Floor Spreading
      1. Maurice Ewing
         1. 1948
         2. Mid Atlantic Oceanic Ridge
            1. young rocks
            2. middle
            3. old rocks
            4. edge
   2. Continental Drift
      1. Jigsaw
         1. South America
         2. Africa
      2. fossils
         1. Mesosaurus
         2. found
            1. South America
            2. Africa
         3. 200 million years old
      3. rocks
         1. types
         2. formation
         3. structure
      4. Glacial deposits