It’s been estimated that in all of Earth’s history, there have been 7 supercontinents, with the most recent one being Pangaea.
The next supercontinent (Pangaea Ultima) is expected to form in around 250 million years.
Why is this the case? What phenomenon causes these giant landmasses to coalesce, break apart, then coalesce again?
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Imagine you have a bunch of floating pool toys. Sometimes the current of the filter clumps them all together, sometimes they break apart and float around. The continents are on tectonic plates that act very similarly, although instead of pool water it’s liquid hot magma.
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