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The mantle is hotter by a few degrees."The inner core and crust are solid; the outer core and mantle layers are plastic or semi-fluid. The various layers are separated by discontinuities which are evident in SEISMIC DATA; the best known of these is the Mohorovicic discontinuity between the crust and upper mantle."

"The core is probably composed mostly of iron (or nickel/iron) though it is possible that some lighter elements may be present, too. Temperatures at the center of the core may be as high as 7500 K, hotter than the surface of the Sun. The lower mantle is probably mostly silicon, magnesium and oxygen with some iron, calcium and aluminum. The upper mantle is mostly olivene and pyroxene (iron/magnesium silicates), calcium and aluminum. We know most of this only from SEISMIC TECHNIQUES; samples from the upper mantle arrive at the surface as lava from VOLCANOES but the majority of the Earth is inaccessible. The crust is primarily quartz (silicon dioxide) and other silicates like feldspar."

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Which is thicker the mantle or the two core layers cobmine?

The two core layers (outer and inner core) are denser and thicker than the mantle. The mantle is the layer between the core and the crust of the Earth, and it is thicker than the core layers.


Which is thicker the earth's mantle or the outer core?

The Earth's outer core is thicker than the mantle. The outer core is about 2,260 kilometers thick, while the mantle is approximately 2,900 kilometers thick.


Which is denser the inner core or the outer core?

Oh, dude, the inner core is denser than the outer core. It's like comparing a rock to a marshmallow. The inner core is solid and packed with a ton of material, while the outer core is more like a liquidy, molten mess. So yeah, the inner core takes the density crown in the Earth's core showdown.


Would you expect the mantle to be hotter or cooler than the inner and outer cores?

The mantle is expected to be cooler than the inner core but hotter than the outer core. The inner core is the hottest layer of the Earth, while the outer core is composed of molten iron and nickel. The mantle, located between the crust and core, experiences convection currents due to heat from the core, making it warmer than the outer core but cooler than the inner core.


How many miles thicker are the outer core and inner core together than the mantle?

The radial thickness of the inner and outer core is equal to 3,486 km (2,166 miles). The mantle is 2,885 km (1,793 miles) thick. As such the inner and outer core combined is 601 km (373 miles) thicker than the mantle.


What is the range of the density within the outer core?

about 2,300 km


What is the order from mot dense or least dens in the earth's layer?

The Earth's layers, from least dense to most dense, are the crust, mantle, outer core, and inner core. The crust is the thinnest and least dense layer, primarily composed of silicate rocks. Beneath it, the mantle is denser and made up of semi-solid silicate materials. The outer core, consisting of liquid iron and nickel, is denser than the mantle, and the inner core, a solid sphere of iron and nickel, is the densest layer.


Lists Earth's compositional layers in order of increasing density?

Earth's compositional layers, in order of increasing density, are the crust, mantle, outer core, and inner core. The crust is the least dense, composed mainly of silicate rocks, followed by the mantle, which is denser and composed of silicate minerals rich in magnesium and iron. The outer core, primarily made of liquid iron and nickel, is denser than the mantle, while the inner core, a solid sphere of iron and nickel, has the highest density of all the layers.


What is hotter inner mantle or outer mantle?

Oh, dude, the inner mantle is definitely hotter than the outer mantle. Like, we're talking about temperatures reaching up to 4000°C in the inner mantle compared to a measly 500-900°C in the outer mantle. So, if you're looking for a hot spot, the inner mantle is where it's at.


What are the major structural units of the earth give a brief account?

The major structural units of the Earth are the core (inner and outer), mantle, and crust. The core is divided into the solid inner core and the liquid outer core. Surrounding the core is the mantle, which is composed of semi-solid rock. The crust, the outermost layer, is divided into oceanic and continental crust, with oceanic crust denser and thinner than continental crust.


How many miles thicker are the outer core and the inner core together than the mantle?

The radial thickness of the inner and outer core is equal to 3,486 km (2,166 miles). The mantle is 2,885 km (1,793 miles) thick. As such the inner and outer core combined is 601 km (373 miles) thicker than the mantle.


How is the mantle related to the outer core?

The outer core of the earth is considered to be a liquid. The mantle is considered solid rock, but could be as much as 5% molten. The outer core is mostly iron and nickel, meanwhile the mantle is mostly ultra mafic rock. The outer core is hotter and more dense than the mantle.