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the claim

Earth's magnetic field is generated by moving liquid iron in the outer core, not by magnetized iron.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
7 sources for · 1 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that Earth's magnetic field is generated by moving liquid iron in the outer core, not by magnetized iron?

Yes. Multiple reference and peer-reviewed sources state Earth's magnetic field is generated by motion of molten/conducting iron in the fluid outer core acting as a dynamo, and one explicitly denies that the outer core being magnetized is the cause. A speculative Zenodo preprint instead proposes an external solar-wind origin, but it is a hypothesis rather than a settled finding.

Verdict: SUPPORTED · 7 sources for, 1 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 7
Earth's magnetic field - Wikipedia
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Earth's magnetic field - Wikipedia. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Earth%27s_magnetic_field

Evidence against · 1
Solar Flows and Toroidal Geometry An External Origin for Earth's Magnetic Field
2025
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Simone, P. (2025). Solar Flows and Toroidal Geometry An External Origin for Earth's Magnetic Field. zenodo.org. https://doi.org/10.5281/zenodo.15430399

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More for · 6
What is the Curie temperature of iron within the Earth's outer core?
2022
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What is the Curie temperature of iron within the Earth's outer core?. (2022). physics.stackexchange.com. https://physics.stackexchange.com/questions/725122/what-is-the-curie-temperature-of-iron-within-the-earths-outer-core

Why geologist do not consider molten iron in the magma to ...
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Why geologist do not consider molten iron in the magma to.... (n.d.). physics.stackexchange.com. https://physics.stackexchange.com/questions/256810/why-geologist-do-not-consider-molten-iron-in-the-magma-to-be-the-source-of-earth

In Earth's Magnetic Pas de Deux , the Inner Core Leads
1996
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In Earth's Magnetic Pas de Deux , the Inner Core Leads. (1996). doi.org. https://doi.org/10.1063/1.2807754

The earth's inner core: revealed by observational seismology
2017
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The earth's inner core: revealed by observational seismology. (2017). opac.k10plus.de. https://opac.k10plus.de/

The earth's inner core: revealed by observational seismology
2017
Get citation
The earth's inner core: revealed by observational seismology. (2017). doi.org. https://doi.org/10.1017/9781139583954

Generation of a strong magnetic field using uniform heat flux at the surface of the core
Get citation
Generation of a strong magnetic field using uniform heat flux at the surface of the core. (n.d.). cir.nii.ac.jp. https://doi.org/10.1038/ngeo643

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