What will happen if the earth will not rotate on its axis?
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If the Earth were to stop spinning on its axis, gradually the oceans would migrate towards the poles from the equator. At first, only small regions of terra firma around the equator would rise out of the retreating waters.
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Eventually, there would be a huge mega-continent wrapped continuously around the Earth at the equator. You could travel around the Earth on the equator and stay entirely on dry land—ignoring the freezing cold on the night side, and the searing heat on the day side.
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The water that left the equatorial regions would have to go somewhere, and that 'somewhere' would be the poles. There would be two totally disconnected polar oceans on each side of the equatorial mega-continent.
In the north, Canada would be entirely underwater. And roughly following the line of the border of current-day USA and Canada, all of Greenland, as well as the northern plains of Siberia, Asia and Europe would be underwater. But Spain would mostly stay above water.
