The oceanic map and the magnetic ... movements came to be known as plate tectonics. The theory encapsulates both Alfred ...

If this was the case, then mountains would be spread evenly over the Earth’s surface. We know that this is not the case. Wegener suggested that mountains formed when the edge of a drifting ...

In 1912 he proposed that the continents we know today were once all attached in a single landmass he called Pangaea (Greek for "all earth"). They were surrounded by one global ocean, but then ...