10th December 2007 - 02:41 AM
Approximately 4.5 billion years ago the earth was nothing more than a giant blob of lava. Fast foreward a little and you find the modern earth, consisthing of an outer crust, and outer mantle, a mantle an outer core and a solid iron core.
The induction process of earth's tectonic plates means that magma from the earths intereor is pushed to the surface and cooled. then it is sucked back in sometime later, meaning that the earth is gradually cooling.
I am still unclear on the procesese of the earths magnetic feald and its effect on life on earth, but I have been told and shown in many mathmaticall calculations that I cant even begen to wrap my left-brain mind around, that the earths magnetic feild is the only thing between us and DOOOM!
If the earth cooled down would it be a minor inconvenience or a doomsday scenario?