Sentences with phrase «metal outer core»
There's the familiar thin crust of continents and ocean floors; the thick mantle of hot, semisolid rock; the molten metal outer core; and the solid iron inner core.
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Scientists had recently discovered that every 200,000 years, on average, churning in the hot liquid metal of Earth's outer core causes the planet's whole magnetic field to flip.
To obtain this result, they modeled Earth's outer core using liquid sodium enclosed between two rotating concentric metal spheres, a set - up they dubbed the Derviche Tourneur Sodium (DTS) experiment.1
This ocean of liquid metal, the outer core, surrounds the inner core, which is made of solid metal.
One of the analysis results concerning the internal structure of the Moon based upon the seismic data indicates that the satellite is considered to consist mainly of two parts: the «core,» the inner portion made up of metal, and the «mantle,» the outer portion made up of rock.
The MESSENGER observations and data from the two earlier Mariner 10 flybys are consistent enough to describe a dipolar field with an active electrical dynamo in which the magnetic field is produced by electrical currents flowing in an outer core of molten metal (more discussion and images from MESSENGER's January 2008 flyby).