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The last time that Earth's magnetic field reversed itself was 780,000 years ago. See the related link for two timelines showing geomagnetic reversals in Earth's history.

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13y ago

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Related Questions

Can the earths magnetic field move?

Yes it can reverse from North to South


How long does it take for the Earth's magnetic field to reverse?

The Earth's magnetic field can take thousands of years to reverse.


Is a compass affected by the earths magnetic field?

Yes, a compass works by aligning itself with the Earth's magnetic field to determine direction. The needle in a compass is magnetized and will point towards the Earth's magnetic north pole.


Is earths core a source of earths magnetic field?

Yes.


How are the Earths magnetic field made?

It is made by the movement of the earths core and magma field


Earth's magnetic field results from the spinning of the?

The earths magnetic field results from deep in the earths core. Magnetic conduction from within the earths core is believed to be the cause of this.


Why do scientists believe that the inner core is the source of earths magnetic field?

because it has the hydro electric power to control the earths magnetic field


How is the force affected when the current is reversed in a magnetic field?

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What is earths magnetic field called?

It is Earths' "Magnetosphere".


Where does the earth's magnetic field get its power from?

earths magnetic field is generated by the circulation of liquid metal.


What is the magnetic field called?

It is Earths' "Magnetosphere".


How do you reverse the magnetic field of an electromagnet?

To reverse the magnetic field of an electromagnet, you can either reverse the direction of the current flowing through the coil or change the polarity of the power supply connected to the coil. This will change the direction of the magnetic field produced by the electromagnet.