When finally the Earth's core cools and solidifies what are its implications on earthlings and environment?

Answer 1

Well, we have a great example of this: Mars. It is half the size (1/8 volume) and has cooled a long time ago. There is little magnetic field to block harmful extraterrestrial radiation and no plate tectonics, so the land sits unchanged and desolate.

Answer 2

bh8153 has the idea. If the core were to cool and become solid the magnetic field of earth would diminish to almost nothing. This would leave the earth vulnerable to the Sun’s radiation and bake the surface of the earth where little or no life could survive. Example: Mars.
There will also come a time when the sun will start to burn up all of its fuel and expand in size. Becoming so large and hot that it will melt the surface and the earth will be a large ball of magma. No life will survive that.
Man will be long gone before any of this happens.

Answer 3

In a solid core, there could be none of the movement which induces the electric currents which create the Earth's magnetic field, so there would be no Van Allen belts, and a much higher intensity of ionised radiation from the Sun hitting the Earth's surface. There would still be the same gravity, because mass is mass whether it's liquid or solid; and there would still be earthquakes and movement of the tectonic plates, because a hot core causes convection currents in the mantle whether it's hot liquid or hot solid. But of course those stop when it becomes a cool solid.

Answer 4

Things balance. By then we would have enough liquid excrement-full of germs and in need of a deep incubation chamber. A giant earthquake will swallow up all of our excrement and the trapped gases will explode and in the middle of the earth the process will begin all over again. Now you know why it is taking so long to bake out all the recycled junk we do not get a chance to let off in speech daily.

Boaz.

Answer 5

This will take many years or may never. The movement of things is just the earth trying to balance itself. Due to the moon it puts lots of stress on our balance, which continually heats our Coors. If it did cool the iron part of the coor should increase the polar magnetism which still protects us from radiation.

Answer 6

The center will stop spinning well I am unsure to best honest, It Will be a lot cooler and gravity will be skewed in way I don't understand. No more earthquakes perse because no plate tech tonics spelling. Earths magnet field will become permanent because it can no longer shift. The earth will no longer bugle as it does,

all kinds of crap.

Answer 7

Earth would come to a halt.