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What is the causes of earth magnetism?

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Rotation of ferro-magnetic outer core over the metallic inner core generates the Earth's magnetic field. Both the outer and inner core of Earth is composed of metallic iron and nickel. read more

Our planet’s magnetic field is believed to be generated deep down in the Earth’s core. Nobody has ever taken the mythical journey to the centre of the Earth, but by studying the way shockwaves from earthquakes travel through the planet, physicists have been able to work out its likely structure. read more

The leading hypothesis is that the earth’s spinning core causes the Earth's magnetic field, but scientists are unsure about the exact mechanism by which it is created. Iron is the primary constituent of the Earth’s core, and it is able to spin because of its layered construction. read more

Magnetism is caused by the movement of tiny electric charges within atoms. When these electric charges align in the same direction, a north pole and south pole are created. North poles attract south poles, while equal poles repel each other. read more

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