And the whole earth was of one language, and of one speech. And it came to pass, as they journeyed from the east, that they found a plain in the land of Shinar; and they dwelt there.
So the LORD scattered them abroad from thence upon the face of all the earth: and they left off to build the city. Therefore is the name of it called Babel; because the LORD did there confound the language of all the earth: and from thence did the LORD scatter them abroad upon the face of all the earth.
(Genesis 11:1-2, 8-9) KJV
It’s an accepted belief in popular science (SciPop) that, at some time in the past, all of the continents were part of one super-continent. This is known as Pangaea.
And the second angel sounded, and as it were a great mountain burning with fire was cast into the sea: and the third part of the sea became blood; And the third part of the creatures which were in the sea, and had life, died; and the third part of the ships were destroyed.
(Revelation 8:8-9) KJV
And the second angel poured out his vial upon the sea; and it became as the blood of a dead man: and every living soul died in the sea.
(Revelation 16:3) KJV
The 1st trumpet/vial caused hail to fall on the land. That’s because the land, as we see it today, is distributed around the globe in a haphazard pattern. How could stellar material falling in an apparently random manner, and including a great mountain burning with fire, fall only on the sea? Consider this:
The earth and all the inhabitants thereof are dissolved: I bear up the pillars of it. Selah.
(Psalms 75:3) KJV
If geological features like Pilot Mountain, North Carolina are remnants of “the pillars of the earth,” it means that the mantle was once above the top of them and we can calculate the Earth’s original radius.