"The continents started out as a single land mass. The land floats on a sea of molten magma so it's not sitting still, volcanic eruptions and earthquakes tear the land apart from itself, as it continued to drift and break apart over time the continents have formed this way. In a billion years the continents will look a lot different than they do now." Thanks to plate tectonics and Pangea, the continents on Earth keep evolving.
