What things would happen if the Earth's core suddenly stopped producing a magnetic field?

Solar wind would slowly strip earth of atmosphere, BAD!

bad things

Over time the earth would look like Mars.

Solar wind would have more access to our atmosphere, stripping it away at a much faster pace; and ions would begin impacting our atmosphere directly, increasing the light radiation we normally get, so we'd see a rise in cancer rates. Ozone would be disrupted (although not immediately), so skin cancers would begin to rise as well. Laying out in the sun now is damaging; if this were to happen - it could be lethal.

If the core no longer were to produce a magnetic field, that means it's cooled, and halted in transferring heat; so - it wouldn't be immediate, but the mantle would begin to cool as well... volcanic activity and quakes would begin to quell after awhile. Continental drift would likewise halt (but, that would happen only when the mantle exhausted its heat... several hundred to several thousand years - could be longer.)

We would all FRY from Solar Radiation.

Soon, all the green plansts would die.

Soon, all teh herbivore animals wpuld die.

Soon, all the carnivore animals would die.

Afer that, life on earth would be extinct

Compasses and navigational equipment would become immediately useless. The magnetic field protects the earth from solar flares. Without this protection, the entire electrical grid across the world could be fried. There are ways to protect the grid but it's not free and electrical companies don't really care about protecting themselves from anything. It has already happened in America in the 1800's when a solar flare burned out thousands of miles of telegraph wires. Scientists know for a fact that the earth's magnetic field reverses polarity from time to time, and while it's shifting, it leaves the earth without a sizable magnetic field for a few years. This occurs in cycles and we are about 500,000 years overdue for a polarity shift.

Update: The oceans wouldn't boil but they would be flooded with radiation. How deep it would penetrate, I have no idea.

That is actually a likely possibility in the near future. Earth's magnetic field occasionally undergoes a 'reversal', and we are overdue for one. Our Earth's magnetic field has been declining at ~20% per century, but recently the decline has accelerated. A period of no magnetic field is imminent, followed by a true magnetic field reversal.

What would happen? I have heard that natural radiation levels at Earth's surface will be increased by about ten fold, and Auroras will become common all over Earth, even at the equator. Our communications and weather and GPS satellites may become inoperable.

I guess we'll find out, won't we?

2 points thanks

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