What causes Earth's magnetic field and how does it protect the planet?

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What causes Earth's magnetic field and how does it protect the planet?

The Earth's magnetic field is caused by the movement of molten iron in its outer core. This movement generates electric currents, which in turn create the magnetic field. The magnetic field acts as a shield, protecting the planet from harmful solar radiation and charged particles from the Sun. It deflects these particles away from the Earth's surface, preventing them from reaching and damaging the atmosphere and life on the planet.