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Why is Earth’s geographic North Pole a magnetic south pole?

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Learn about magnetic fields and the levels of particles, atoms, crystals, and domains — magnet Magnetic fields and the levels of magnetism of particles, atoms, crystals, and domains.

To clarify, the Earth’s geographic North Pole is not a magnetic pole itself; rather, it is the location near which the south pole of the Earth's internal magnetic field is currently situated.1

The confusion often stems from how we name the poles of a magnet. By definition, a magnetic pole is named based on its behavior: the "north-seeking" pole of a compass needle points toward the geographic North Pole. Because opposite poles attract, the end of the Earth’s internal magnetic dipole located in the northern hemisphere must physically be a magnetic south pole.21

This configuration is a result of the Earth acting like a giant bar magnet aligned roughly with its rotation axis. It is important to note that this orientation is not permanent; throughout geological history, the Earth has undergone reversals of the main field, meaning the polarity of the planet's magnetic field has flipped multiple times.1