write a short note on Earth …
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Yogita Ingle 6 years, 4 months ago
Earth's magnetic field is a magnetic dipole, similar to that of a bar magnet tilted 11° from the earth's axis of rotation. The magnetic south pole is near the geographic south pole, and the magnetic north pole is near the geographic north pole. The earth's magnetic field, extending tens of thousands of kilometers into space, is called the magnetosphere (actually, like all magnetic fields, the earth's field extends infinitely into space, but is much weaker farther away). The magnetosphere protects the earth from solar wind, which is a stream of charged particles ejected from the sun. Although not fully understood, the earth's magnetic field is caused by the dynamo effect. The direction of the earth's magnetic field can also reverse direction.
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