(it is related to physics)
2007-06-21 10:41:30 · 6 answers · asked by creativespidermonkey 2 in Science & Mathematics ➔ Earth Sciences & Geology
The temperature at the center of the earth is too high at 5000 to 7000 K -- higher than the Curie temperature of any permanent magnets. The result is that the magnetic field is much lower than what would be possible from the same mass of ferro-nickel-cobalt if that mass was cold enough.
At that temperature, all known metals are melted, this also pretty much rule out the possibility of any solid magnet being down there.
Further, the motion of the magnetic pole, and the occasional reversal every couple of thousand years show that this "magnet" is indeed a liquid that is sloshing around, magnetically speaking.
2007-06-21 10:51:55 · answer #1 · answered by Vincent G 7 · 0⤊ 0⤋
In a way it does, the molten core is kept molten because of the friction produced in a mega amount by the shifting of the "land tides" as our planet rotates on its axis, there are thermoclines in the composition of the earth and the mathmatical explaination of this process/function is more than i care to explain at this time. Long story short, it isn't a bar magnet it is a ball magnet, and the north and south poles are the resulting electromagnetic charges resulting from its composition. The aurora and australia borealis is an observable product of these poles, the earths atmosphere refocuses the magnetic charges emanating into the atmosphere to a visible light source. Also, the earth's axis is parallel to the sun's axis which is aligned by magnetic attracton to the south pole of our North Star Polaris, until the currently progressing polar shift occurs, and as this astronomical phase change occurs, our entire solar system will remain intact, but create naturally a different magnetic relation to a different North Star.
2007-06-21 11:02:33 · answer #2 · answered by james p 3 · 0⤊ 0⤋
I dont think anyone really knows because no one has ever been to the centre of the earth.
2007-06-22 22:33:35 · answer #3 · answered by Anonymous · 0⤊ 0⤋
it does i seen it on discovery channel.the magnet will eventually lose its power and already it islosing it. Its the opposite of a magnet it actually pulls earth away from the sun.But when that runs out earth will slowly be pulled closer and closer towards the sun and eventually burn and implode on itself.
2007-06-22 06:53:05 · answer #4 · answered by Anonymous · 0⤊ 0⤋
The Earth has solid iron inner core. We have conjectured this through understanding how differentiation works and by watching seismic wave patterns.
2007-06-21 10:49:45 · answer #5 · answered by Lady Geologist 7 · 0⤊ 0⤋
WHAT!
You mean it doesn't?
2007-06-21 11:06:12 · answer #6 · answered by Ian L 3 · 0⤊ 0⤋