How Does The Lithosphere Differ From The Asthenosphere


How Does The Lithosphere Differ From The Asthenosphere?

The lithosphere is the brittle crust and uppermost mantle. The asthenosphere is a solid but it can flow like toothpaste. The lithosphere rests on the asthenosphere.The lithosphere is the brittle crust and uppermost mantle

uppermost mantle
The upper mantle of Earth is a very thick layer of rock inside the planet which begins just beneath the crust (at about 10 km (6.2 mi) under the oceans and about 35 km (22 mi) under the continents) and ends at the top of the lower mantle at 670 km (420 mi).

What are 3 ways that the asthenosphere is different from the lithosphere?

Comparison of the Lithosphere and Asthenosphere
Lithosphere Asthenosphere
Characterized as elastic and less ductile Has a higher degree of ductility than the lithosphere
Ranges from a depth of 80km and 200 km below the earths surface Extends to a depth of 700km below the earths’ surface

What is the physical difference between the lithosphere and the asthenosphere quizlet?

How does the asthenosphere differ from the lithosphere? The lithosphere is rigid and brittle while the asthenosphere is slightly mushy. You just studied 59 terms!

How are the properties of the lithosphere and the asthenosphere different how is the difference important to plate tectonics?

In the lithosphere the rocks are cooler stronger and more rigid than the asthenosphere. It is rock strength that differentiates the lithosphere from the asthenosphere. The differences in strength between rock in the lithosphere and rock in the asthenosphere is a function of temperature and pressure.

Which region represents the asthenosphere and how does it differ from the lithosphere?

The lithosphere is rigid and is made of the crust and the upper part of the mantle. The asthenosphere is plastic and is made of the softer part of the mantle. The lithosphere is plastic and is made of continental crust. The asthenosphere is rigid and is made of oceanic crust.

What is the main difference between the lithosphere and the asthenosphere contrast the oceanic lithosphere and continental lithosphere?

The lithosphere differs from the asthenosphere because the lithosphere is the solid outer layer of the earth and the asthenosphere is below the mantle and made of slow flowing rock. You just studied 56 terms!

What property distinguishes the lithosphere asthenosphere and lithosphere within the Earth’s mantle?

Lithosphere and asthenosphere are divisions based on mechanical properties. The lithosphere is composed of both the crust and the portion of the upper mantle that behaves as a brittle rigid solid. The asthenosphere is partially molten upper mantle material that behaves plastically and can flow.

How does the asthenosphere affect the lithosphere?

Convection currents also stress the lithosphere above and the cracking that often results manifests as earthquakes. According to the theory of plate tectonics the asthenosphere is the repository for older and denser parts of the lithosphere that are dragged downward in subduction zones.

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What is the connection between lithosphere and asthenosphere?

The lithosphere is the solid outer part of the Earth. It includes the brittle upper portion of the mantle and the crust the planet’s outermost layers. The lithosphere is located below the atmosphere and above the asthenosphere. The asthenosphere is made of melted rock that gives it a thick sticky consistency.

What is the difference between lithosphere asthenosphere and mesosphere?

The lithosphere (litho:rock sphere:layer) is the strong upper 100 km of the Earth. The lithosphere is the tectonic plate we talk about in plate tectonics. … The asthenosphere extends from 100 km depth to 660 km beneath the Earth’s surface. Beneath the asthenosphere is the mesosphere another strong layer.

What is the asthenosphere and describe its characteristics?

The asthenosphere is the denser weaker layer beneath the lithospheric mantle. It lies between about 100 kilometers (62 miles) and 410 kilometers (255 miles) beneath Earth’s surface. The temperature and pressure of the asthenosphere are so high that rocks soften and partly melt becoming semi-molten.

What is the relationship between the lithosphere and asthenosphere quizlet?

The relationship between the Lithosphere Asthenosphere and Mesosphere is the lithosphere contains the tectonic plates the Asthenosphere the plates move on top of them and the Mesosphere convection currents move in this layer help drive the plates in the Lithosphere.

How does the lithosphere of the deep ocean basins differ from the lithosphere of the continents?

The lithosphere of the deep-ocean basin is thinner and denser than the lithosphere of the continents. … New oceanic crust slowly moves away from the ridge system and hence is progressively older with distance from the ridge.

What is the difference between oceanic lithospheric material and continental lithospheric material?

Oceanic lithosphere is associated with oceanic crust and is slightly denser than continental lithosphere. The most well-known feature associated with Earth’s lithosphere is tectonic activity. … The movement of tectonic plates is made possible by thermal energy (heat) from the mantle part of the lithosphere.

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Which statement below best compares the lithosphere to the asthenosphere according to the lecture?

Which statement below best compares the lithosphere to the asthenosphere according to the lecture? The lithosphere is a brittle solid and the asthenosphere is a ductile solid.

What property distinguishes the Earth’s crust mantle and core layers?

Earth’s Layers (The internal structure of the Earth)

The crust is a silicate solid the mantle is a viscous molten rock the outer core is a viscous liquid and the inner core is a dense solid.

What are the two different classification systems for Earth’s interior?

The two categories are the compositional and physical layers of earth. The lithosphere also known as the tectonic plates floats on top of the asthenosphere.

What are the lithosphere and the asthenosphere What role do they play in plate tectonics?

The Lithosphere is the “plate” of the Plate Tectonic theory. The base of the Lithospheres is marked by a “low-velocity” seismic zone where seismic waves slow down as they enter the warm plastic Asthenosphere. The Asthenosphere (weak sphere) is part of the Mantle that flows a characteristic called plastic behavior.

What role does the lithosphere and asthenosphere have in the movement of tectonic plates?

The asthenosphere is now thought to play a critical role in the movement of plates across the face of Earth’s surface. … That mechanism is the semi-fluid character of the asthenosphere itself. Some observers have described the asthenosphere as the ‘lubricating oil’ that permits the movement of plates in the lithosphere.

Why does the lithosphere float on the asthenosphere?

Since the Lithosphere has a lower density it floats on top of the Asthenosphere similar to the way in which an iceberg or a block of wood floats on water. The lower mantle below the Asthenosphere is more rigid and less plastic.

What is the lithosphere and describe its characteristics?

The lithosphere is Earth’s outermost layer composed of rocks in the crust and upper mantle that behave as brittle solids. The rigid lithosphere sits on top of the asthenosphere a layer of the mantle in which rocks are hot and deformable.

Which correctly describes the asthenosphere?

The asthenosphere (Ancient Greek: ἀσθενός [asthenos] meaning “without strength” and σφαίρα [sphaira] meaning “sphere”) is the highly viscous mechanically weak and ductile region of the upper mantle of Earth. It lies below the lithosphere between approximately 80 and 200 km (50 and 120 miles) below the surface.

What is the difference between an ocean and a sea?

In terms of geography seas are smaller than oceans and are usually located where the land and ocean meet. Typically seas are partially enclosed by land. Seas are found on the margins of the ocean and are partially enclosed by land. Here you can see that the Bering Sea is part of the Pacific Ocean.

Is the lithosphere more mafic than asthenosphere?

Lithosphere is more mafic than asthenosphere. … Asthenosphere consists of the lower middle and upper mantle and is defined as mantle material that is cooler than 1280°C.

Is the oceanic lithosphere lighter than continental lithosphere?

A theory of global tectonics in which the lithosphere is divided into a number of crustal plates each of which moves on the plastic asthenosphere more or less independently to collide with slide under or move past adjacent plates. … Oceanic lithosphere is lighter than continental lithosphere.

What is the difference between a continent and a lithospheric plate?

The continents are embedded in the plates. Many continents occur in the middles of plates not at their boundaries or edges. … Plates are composed of the Earth’s crust and upper mantle which are collectively called the lithosphere. This layer is like an eggshell compared to the total thickness of the Earth.

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What is Lithos in lithosphere?

The lithosphere includes the Earth’s crust and the uppermost part of the mantle. … Slight movements in the lithosphere can cause earthquakes when the plates bump against each other. “Litho” is from the Greek word lithos meaning stone.

What is the difference between lithospheric plates and tectonic plates?

Tectonic plates are the different pieces of the Earth’s crust that move around as they float on top of the mantle. … Lithospheric plates are regions of Earth’s crust and upper mantle that are fractured into plates that move across a deeper plasticine mantle.

Which type of wave below can travel through solids and liquids and is similar to a sound wave select one?

earthquakes. The P seismic waves travel as elastic motions at the highest speeds. They are longitudinal waves that can be transmitted by both solid and liquid materials in the Earth’s interior. With P waves the particles of the medium vibrate in a manner similar to sound waves—the…

What is the major property of the asthenosphere?

Properties of the asthenosphere

The asthenosphere is ductile and deforms easily compared to the overlying lithosphere because of its temperature and pressure. Any rock will melt if its temperature is raised high enough.

What is the biggest difference between hot spot volcanism in an island chain and plate tectonic volcanism in an island chain quizlet?

What is the biggest difference between hot-spot volcanism in an island chain and plate tectonic volcanism in an island chain? Hot spots have age trends hot spot volcanoes move as the plate moves producing a line of volcanoes of different ages.

What keeps the lithosphere from melting in contrast to the asthenosphere )?

It is likely that the lithosphere beneath continents and oceans are very different from each other. … In such conditions mantle lithosphere and asthenosphere are always at thermal conditions lower than the temperatures requested for partial melting at a fixed pressure condition.

What is the difference between compositional and mechanical layers?

Compositional layers are determined by their components while mechanical layers are determined by their physical properties. The outermost solid layer of a rocky planet or natural satellite. … A layer of the Earth (or any planet large enough to support internal stratification) between the crust and the outer core.

Why do the waves have different speeds in different layers of Earth’s surface?

Different layers inside of the Earth have different density being made of different material at different temperatures. Density and temperature determine the speed of sound so the speed of the waves.

The Lithosphere and the Asthenosphere

Lithosphere & Asthenosphere

Lithosphere & Asthenosphere

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