Sentences with phrase «iron outer core»

The mantle, which makes up more than four - fifths of the earth's volume, is energized by radioactive heating within it and by the molten iron outer core below it.

Not exact matches

The planetary architecture that provides Earth's sheltering field has been broadly understood for several decades now: a solid - iron inner core roughly the size of the moon, surrounded by a 1,400 - mile - thick outer core of liquid iron and nickel, with 1,800 miles of solid mantle above, topped by a crust of slowly drifting tectonic plates.

Under slightly less pressure, the outer core — a 1,400 - mile - deep, 8,000 - degree ocean of iron and nickel — is still hot enough to be fluid.

Two years ago, a team of scientists from two British universities discovered that liquid iron, at the temperatures and pressures found in the outer core, conducts far more heat into the mantle than anyone had thought possible.

Heat from Earth's inner core, which is as hot as the surface of the sun, churns an outer core of molten iron and nickel, generating a magnetic field that deflects lethal cosmic and solar radiation away from the planet.

The discovery is vexing: If liquid iron conducts heat into the mantle at such a high rate, there wouldn't be enough heat left in the outer core to churn its ocean of liquid iron.

Besides having the right mix of ingredients and pressures, this range defines a well - known transition zone within the mantle, the 2900 - kilometer - or - so - thick layer of slowly circulating material that lies between Earth's crust and its outer core of molten iron.

The researchers show that this effect could continuously stimulate the motion of the liquid iron alloy making up the outer core, and in return generate Earth's magnetic field.

Sitting on top of the liquid outer core, it may sink slightly, disturbing the flow of iron and ultimately affecting Earth's magnetic field.

This shield is produced by the geodynamo, the rapid motion of huge quantities of liquid iron alloy in the Earth's outer core.

This mechanical forcing applied to the whole planet causes strong currents in the outer core, which is made up of a liquid iron alloy of very low viscosity.

The magnetic field is generated by swirling, liquid iron in Earth's outer core.

The Outer Core Made of molten iron, nickel, and other ingredients yet to be determined, the churning liquid outer core may have the viscosity of water, streaming at possibly one to several miles per week with the turbulence of a gargantuan, slow - moving washing macOuter Core Made of molten iron, nickel, and other ingredients yet to be determined, the churning liquid outer core may have the viscosity of water, streaming at possibly one to several miles per week with the turbulence of a gargantuan, slow - moving washing machCore Made of molten iron, nickel, and other ingredients yet to be determined, the churning liquid outer core may have the viscosity of water, streaming at possibly one to several miles per week with the turbulence of a gargantuan, slow - moving washing macouter core may have the viscosity of water, streaming at possibly one to several miles per week with the turbulence of a gargantuan, slow - moving washing machcore may have the viscosity of water, streaming at possibly one to several miles per week with the turbulence of a gargantuan, slow - moving washing machine.

The Earth's magnetic field is generated by the flow of liquid iron, an electrical conductor, in the Earth's outer core, between 3000 and 5000 kilometres beneath the surface.

These structures could indicate that mantle plumes once rose from Venus» iron core to the outer layer, thus softening and weakening the planet's surface.

Below the mantle is the outer core, composed of liquid, molten iron and nickel, which envelopes an inner core of solid iron at the center of the planet.

Mercury's peculiar magnetic field provides evidence that iron turns from a liquid to a solid at the core's outer boundary, say the scientists, whose research currently appears online in the journal Geophysical Research Letters and will be published in an upcoming print edition.

The motion of Earth's fluid outer core, which contains iron and nickel, helps to generate a planet - wide magnetic field.

Within Earth's core, iron turns from a liquid to a solid at the inner boundary of the planet's liquid outer core; this results in a solid inner part and liquid outer part.

Earth's solid inner core is surrounded by a fluid outer core, with the boundary between the two expected to be the temperature of the melting point of highly pressurized iron — the primary ingredient of both layers.

per cubic foot Mass: 1.07 x 1020 tons Features: Numerous 3 - to 6 - mile - wide blobs of crystallized material and evidence of layers hundreds of miles thick and perhaps a 360 - mile - wide innermost inner core of iron Activity: Convective currents in the outer core give rise to a dynamo process — a natural generator.

per cubic foot Mass: 81 x 1018 tons Features: 43 - mile - thick outer crust; 788 - mile - thick mantle; 248 - mile - wide iron - rich core Activity: Tectonically dead.

That rules out some previously proposed ways of forming Mercury with its relatively huge molten iron core, such as having the nascent sun blasting away the outer rind of an Earthlike planet.

The new data should help scientists better model the movement of liquid iron in the outer core, which gives rise to Earth's magnetic field, says Duncan Agnew, a geophysicist at Scripps Institution of Oceanography in San Diego, California.

Or it might be associated with chemical reactions between the outer core's iron - rich fluid and the crystalline silicate mantle.»

By looking in detail at the seismic record, you can deduce that Earth has a liquid outer core and a solid inner core, and that both are mostly iron.

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.

Markiewicz and his co-authors suggest that the droplets either have a core of iron chloride or an outer coating of elemental sulphur.

Most of Earth's magnetic field is generated deep within the outer core by an ocean of superheated molten iron.

The core of the Earth contains an inner layer, an iron - rich solid ball, and an outer layer, of liquid iron and nickel, with a mantle of silicate.

Analyzing these echoes, scientists found a marked difference in the structure of iron crystals in the inner and outer regions of the inner core.

Not only are the iron crystals in the «inner» inner core aligned in an east - to - west direction — as opposed to the north - to - south alignment in the «outer» inner core — they also behave differently from their counterparts in the outer region.

The motion of liquid iron in the outer core is itself driven by the continuous loss of heat from the inner core.

Earth's magnetic field is thought to be generated largely by an ocean of superheated, swirling liquid iron that makes up Earth's outer core 3000 km under our feet.

Our planet's magnetic field is generated by molten iron swirling around in the planet's outer core around a smaller, solid core — a process that creates a self - sustaining geomagnetic dynamo.

So, tracking changes in the magnetic field can reveal how the superheated, swirling mass of molten iron in the outer core behaves.

They deduce that the planet has a solid inner core surrounded by a relatively thin, molten outer core, which is possible if the core contains some sulphur as well as iron.

At the end of its life, having exhausted its fuel and left with a dense iron core, the star collapses and sheds its outer layers, leaving behind a dense neutron star in its wake.

Inner Core G3439 Outer Core G3443 INGREDIENTS: Outer Core - ETHYLHEXYL PALMITATE METHYL METHACRYLATE CROSSPOLYMER HYDROGENATED POLYISOBUTENE POLYETHYLENE PHENYL TRIMETHICONE NYLON - 12 DIISOSTEARYL MALATE OZOKERITE POLYVINYL LAURATE DISTEARDIMONIUM HECTORITE CAPRYLYL GLYCOL PROPYLENE CARBONATE CALCIUM CARBONATE ZINC PCA ACRYLONITRILE / METHYL METHACRYLATE / VINYLIDENE CHLORIDE COPOLYMER [+ / - MAY CONTAIN / PEUT CONTENIR CI 77891 / TITANIUM DIOXIDE CI 77491, CI 77492, CI 77499 / IRON OXIDES MICA F.I.L. D158948 / 5 Inner Core - ISONONYL ISONONANOATE ETHYLHEXYL PALMITATE DIMETHICONE CERA MICROCRISTALLINA / MICROCRYSTALLINE WAX / CIRE MICROCRISTALLINE PHENYL TRIMETHICONE METHYL METHACRYLATE CROSSPOLYMER SILICA COPERNICIA CERIFERA CERA / CARNAUBA WAX / CIRE DE CARNAUBA VINYL DIMETHICONE / METHICONE SILSESQUIOXANE CROSSPOLYMER DIMETHICONE CROSSPOLYMER NYLON - 12 CAPRYLYL GLYCOL TOCOPHERYL ACETATE CALCIUM CARBONATE ZINC PCA ACRYLONITRILE / METHYL METHACRYLATE / VINYLIDENE CHLORIDE COPOLYMER LAURYL METHACRYLATE / GLYCOL DIMETHACRYLATE CROSSPOLYMER [+ / - MAY CONTAIN / PEUT CONTENIR MICA CI 77891 / TITANIUM DIOXIDE CI 77491, CI 77492, CI 77499 / IRON OXIDES F.I.L. D158947 / 5

On Earth, iron is a pervasive element; it forms much of the planet's outer and inner core, and it is one of the most common elements found on Earth's crust.