what is the asthenosphere?
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What is the asthenosphere? The asthenosphere is the highly viscous, mechanically weak and ductilely deforming region of the upper mantle of the Earth.The asthenosphere is generally solid although some of its regions could be melted (e.g. below mid-ocean ridge). The lower boundary of the asthenosphere is not well defined. The thickness of the asthenosphere depends mainly on the temperature is involved in plate tectonic movement and isostatic adjustments. For lecture on Asthenosphere visit
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- Matter in the Asthenosphere is in the molten or semi-molten state.  This is because its temperatures can peak at 3,000 degrees Celsius.  Its composition consists of magnesiu…m and iron silicates. The  Asthenosphere plays a key role in the movement of tectonic plates.
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Tectonic plates consist of the lithosphere,or the crust and the upermost mantle? Mechanically speaking, Seismologists define the Lithosphere as the hard & ridged outer ~100 km of the Earth. The Lithosphere includes the Crust (more on it below) and the uppermost (<1300 Celsius) brittle Mantle. Below the brittle Lithosphere (Crust+upper brittle Mantle) is the Astenosphere, a weak plastic layer within the upper Mantle below, the Astenosphere is defined as having a temperature >1300 Celsius.
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Asthenosphere Asthenosphere. Introduction. The asthenosphere is the layer of the Earth that lies below the lithosphere. It is a layer of solid rock that has so much pressure and heat the rocks can flow like a liquid. The rocks are less dense than the rocks in the lithosphere. This allows the tectonic plates in the lithosphere to move around on the Earth's surface by floating on the rocks that are slowly flowing like a liquid.
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- A lithosphere (Ancient Greek: λίθος for rocky, and σφαίρα for sphere) is the rigid, outermost shell of a terrestrial-type planet or natural satellite that is defined by its rigid mechanical properties.
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Asthenosphere In the old oceanic mantle the transition from the lithosphere to the asthenosphere, the so-called lithosphere-asthenosphere boundary (LAB) is shallow (about 60 km in some regions) with a sharp and large velocity drop (5-10%).
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Layers of the earth The asthenosphere is the bottom layer of the mantle. It is a plastic like liquid made up of iron and nickel. The temperature of the asthenospere is 4500 degrees celsius. It is hotter than the lithosphere because it is closer to the inner core.
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What is the difference between asthenosphere and mesosphere? The asthenosphere is the layer of Earth that lies at a depth 60-150 mi (100-250 km) beneath Earth's surface.
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- The lithosphere is the rocky outer part of the Earth. It is made up of the brittle crust and the top part of the upper mantle. The lithosphere is the coolest and most rigid part of the Earth.
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Asthenosphere Asthenosphere. Introduction The asthenosphere is the layer of the Earth that lies below the lithosphere. It is a layer of solid rock that has so much pressure and heat the rocks can flow like a liquid. The rocks are less dense than the rocks in the lithosphere.
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Chapter 8: Earth No, the iron and nickel are to be found much deeper in the core of the Earth. The asthenosphere is the mechanically weak, ductily-deforming region of the upper mantle of the E…arth. It lies below the lithosphere, at depths between 100 and 200 km. The purpose of life is to have a life with purpose.
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Asthenosphere Rocks in upper mantle. The rocks in the upper mantle can be part of the lithosphere or the asthenosphere. Lithosphere rocks are solid and rigid. Rocks below the lithosphere flow and break apart. They also rise through the lithosphere in areas where tectonic plates are separating.
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What layers make up the Lithosphere and Asthenosphere? The lithosphere is outer portion of the Earth. It is composed of the oceanic and continental crust, along with the rigid upper mantle. The asthenosphere is the plastic like upper mantle directly below the lithosphere where rock can move, bend, and deform without breaking. Below that, the mantle become more fluid and is the major part of the volume of the Earth.
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- Is the asthenosphere made of iron and nickel? No, the iron and nickel are to be found much deeper in the core of the Earth. The asthenosphere is the mechanically weak, ductily-deforming region of the upper mantle of the E … arth. It lies below the lithosphere, at depths between 100 and 200 km.
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What is the asthenosphere made of? Rating Newest Oldest. Best Answer: The asthenosphere is made of plastic rock (solid, but able to flow), and is composed of olivines, pyroxenes, spinels and garnets.
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Asthenosphere Asthenosphere. Introduction. The asthenosphere is the layer of the Earth that lies below the lithosphere. It is a layer of solid rock that has so much pressure and heat the rocks can flow like a liquid.The rocks are less dense than the rocks in the lithosphere.he rocks in the upper mantle can be part of the lithosphere or the asthenosphere. Lithosphere rocks are solid and rigid. Rocks below the lithosphere flow and break apart. They also rise through the lithosphere in areas where tectonic plates are separating.
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What is the asthenosphere? The asthenosphere is that part of the Earth which is viscous and undergoes ductile deformation and convection on a geological time scale. It is part of the upper mantle and is… approximately 600 km thick laying below the lithosphere at a depth of around 100 to 200 km and it's base is around 700 km deep.
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- The asthenosphere is a part of the Earth's upper mantle. The asthenosphere lies underneath the lithosphere which is the Earth's rigid plates (plate techtonics). In a sense, the lithosphere floats on top of the asthenosphere. It is dense, and consists of some partially molten rock. It is considered a low velocity zone.
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Differences between the Earthsâ Lithosphere and Asthenosphere LAB depicts the transition from hot mantle in the asthenosphere to the colder and more rigid lithosphere above. The lithosphere is characterised by conductive heat transfer whereas the asthenosphere is a boundary with advective heat transfer.
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What is the asthenosphere? The lithosphere is composed of the crust and upper mantle of the Earth that behave as elastic brittle solids under stress. The lithosphere extends from the Earth's surface to …a depth of between 100 to 200 km.
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asthenosphere asthenosphere. n. 1. (Geological Science) a thin semifluid layer of the earth (100-200 km thick), below the outer rigid lithosphere, forming part of the mantle and thought to be able to flow vertically and horizontally, enabling sections of lithosphere to subside, rise, and undergo lateral movement.See also isostasy.he upper part of the Earth's mantle. The asthenosphere lies beneath the lithosphere and consists of several hundred miles of partially molten rock. Because it is partially molten, seismic waves passing through this layer have slow velocities.
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- The asthenosphere is a weaker layer that flows right underneath the lithosphere. Together, the lithosphere and the asthenosphere comprise what scientists refer to as the earth’s mantle.There are two different kinds of lithosphere which together make up the earth’s surface, or crust. The oceanic lithosphere is essentially what is referred to as the ocean floor.he asthenosphere is a weaker layer that flows right underneath the lithosphere. Together, the lithosphere and the asthenosphere comprise what scientists refer to as the earth’s mantle.
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asthenosphere Pronunciation: (as-then'u-sfēr), [key]. — n. Geol. the region below the lithosphere, variously estimated as being from fifty to several hundred miles (eighty-five to several hundred kilometers) thick, in which the rock is less rigid than that above and below but rigid enough to transmit transverse seismic waves.
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asthenosphere (ăs-thĕn′ə-sfîr′) The upper part of the Earth's mantle. The asthenosphere lies beneath the lithosphere and consists of several hundred miles of partially molten rock. Because it is partially molten, seismic waves passing through this layer have slow velocities. Compare atmosphere, hydrosphere, lithosphere.
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- By Andrew Alden. The lithosphere is the brittle outer layer of the solid Earth. The plates of plate tectonics are segments of the lithosphere. The lithosphere is basically the layer of the Earth that is strong enough to flex rather than flow.
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What layers make up the asthenosphere? The asthenosphere is composed of the layer of mantle below the lithosphere where the rock has plastic like qualities and is able to bend and deform without breaking. The Ear…th's crust is the uppermost layer of the Earth and is solid. It sits on the Mantle which is the huge volume of below the crust but above the inner core. The Earth's crust is solid and some of the upper mantle is solid too. Those together are called the Lithosphere.