"Brenda Ann" wrote:

A theory is that the dynamic process of molten rock circulating from the
core to the near-surface will decrease. Thus the magma cooling down near
the earth crust, the size and weight of the earth will remain the same.
But the shift in mass distribution of the earth will cause the
earth-rotation to increase. (ref. an ice-skater spinning slower with the
arms stretched out). We'll get much longer days. And more time to write
junk mail like this on the net.

If the Earth's rotation speed increases, we get SHORTER days. Days have been
tending shorter. At one time within human existance, days were longer, and
we had only 360 days per year (hence 360 degrees in a circle).

A slip-of-the-brain; I meant a "speed decrease".