Pangaea was once the first continent on earth. over time the plates move separating it into 7 continents
If look at a map of the Atlantic Ocean, you have probably noticed that the coastlines of Africa and South America it looks like they fit together like puzzle. For many years, scientists thought this was just a coincidence, because no one could think of a way that the continents could slide around but know that we know about tectonic plates we know that pangaea was said to be the first and only continent on earth at one time. but because it was so long ago we have no actual proof so therefor its a theory.
Review of basic Plate Tectonics. This is a revised version -- cleaning up the graphics and the script/narration. I deleted the original version, which had 17...
Latest studies imply Earth's plates today move twice as fast as they did 2 billion years ago. Maybe its because the mantle has moved fast.