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timmdeeg
Gold Member
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How can the motion of liquid iron consisting of neutral iron atoms in the earth's core create magnetic fields? What am I missing?
Not a problem, A.I. rules. You can turn subtitles on and click pause anytime.timmdeeg said:Thanks, my English isn't good enough to understand that however.
As jedishrfu stated, sometimes websites change their link. So if someone finds this thread a few years from now, if the link doesn't work, then the user can start with the citation.timmdeeg said:Just click on the quote.
The Earth's magnetic field is generated by the movement of molten iron in its outer core. This process is known as the geodynamo.
The Earth's magnetic field has existed for at least 3.45 billion years, as evidenced by ancient rocks that contain magnetic minerals aligned with the Earth's magnetic field at the time of their formation.
The Earth's magnetic field acts as a shield, deflecting harmful solar wind particles and cosmic rays away from the planet's surface. This protection is essential for maintaining life on Earth.
No, the Earth's magnetic field is not constant. It has been shown to change in both strength and direction over time, and can even reverse completely, with the north and south magnetic poles swapping positions.
Scientists study the Earth's magnetic field using a variety of methods, including satellite measurements, ground-based observatories, and geological studies of ancient rocks. These methods help us understand how the magnetic field has changed over time and its role in shaping the Earth's history.