Please enable JavaScript.
Coggle requires JavaScript to display documents.
Plate Tectonics (The theory of plate tectonics (plate (earth's…
Plate Tectonics
-
Sea floor Spreading
-
Sea floor spreading adds more crust to the ocean floor at the same time older strips of rocks move outward from either side of the ridge
In a process taking tens of millions of years part of the ocean floor sinks back into the mantle at deep ocean trenches.
-
sea floor spreading
molten material from the earth and rise, erupts, cool
-
-
Drifting Continents
Wengerners hypothesis was that all the continents were once all joined together in a single land mass.
-
-
-
-
-
-