the name of the single landmass that broke apart 200 million years ago and gave rise to today's continents
When Pangaea fragmented into separate continents that drifted apart, moving slowly to their present positions.
The process that creates new sea floor as plates move away from each other at the mid-ocean ridges
When continents move towards each other when the old ocean floor between them sinks back down into the Earth's interior
pieces of the lithophere that are composed of a rigid layer of the uppermost mantle and a layer of oceanic or continental crust, or both