Where does this come from, and can I check it?

Circulating liquid metal acts as a giant geodynamo protecting Earth from solar radiation. The figure is taken from USGS, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

Is this really a science fact?

Yes. It sits on the Science shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

What else can I read about it?

The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

Mondo Knows Facts

Molten iron convection in outer core creates Earth magnetic shield

Circulating liquid metal acts as a giant geodynamo protecting Earth from solar radiation

Earth's protective magnetic field is generated deep inside the outer core, where molten iron and nickel flow in swirling convective patterns. Planetary rotation organizes these conductive liquid metal flows into electrical currents that create a global dipole magnetic field. This magnetosphere deflects harmful solar wind particles away from Earth's atmosphere.

Where this comes from

USGS

Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.

Go further

Science trivia Ohms Law Calculator

More facts like this

Earth magnetic poles flip every few hundred thousand yearsGeomagnetic reversals swap the North and South magnetic poles over geologic timescales Nitrogen and oxygen make up ninety-nine percent of dry airDry atmospheric air consists of 78 percent nitrogen and 21 percent oxygen by volume The Ring of Fire hosts most of Earth volcanoes and earthquakesA horseshoe shaped belt around the Pacific Basin generates 90 percent of global quakes Mohs scale rates mineral scratch resistance from talc to diamondA 1 to 10 ordinal ranking evaluates mineral hardness based on scratch capability Earth rotation deflects moving air masses and ocean currentsThe Coriolis effect turns winds rightward in the northern hemisphere and leftward in the south Cumulonimbus cloud towers can reach twelve kilometres highPowerful convective updrafts push storm clouds into the lower stratosphere

Tags: earth science, geophysics, magnetic field

Molten iron convection in outer core creates Earth magnetic shield: the short answers

Where does this come from, and can I check it?: Circulating liquid metal acts as a giant geodynamo protecting Earth from solar radiation. The figure is taken from USGS, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a science fact?: Yes. It sits on the Science shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.