What are the two sublayers of the Earth?

Earth has a core ,but this is really two distinct parts : the inner core and the outer core .

What are the Sublayers?

Noun. sublayer (plural sublayers) A layer underneath another. A subunit of a layer.

What are the two parts of the upper mantle called?

The upper mantle can be divided into the thin layer that, together with the crust, is called the lithosphere and the hot, fluid asthenosphere below the lithosphere. This lower layer is responsible for the movement of tectonic plates.

What are the sublayers of the atmosphere?

The atmosphere can be divided into layers based on its temperature, as shown in the figure below. These layers are the troposphere, the stratosphere, the mesosphere and the thermosphere. A further region, beginning about 500 km above the Earth’s surface, is called the exosphere.

What is lithosphere, asthenosphere and mesosphere?

Mesosphere: The region between the base of the asthenosphere and the core mantle. Lithosphere: The outer 100 km of the earth. Rocks there are harder and more rigid than those in the lithosphere. Seismic Waves: Elastic disturbances that move out from the earthquakes focus.

What are the sublayers of physical layer?

The physical layer is divided into two sublayers: the Physical Layer Convergence Procedure (PLCP) sublayer and the Physical Medium Dependent (PMD) sublayer.

What is the mantle made up of?

The mantle is composed primarily of heavy metals, such as iron, nickel, magnesium, and others. Scientists describe the state of the mantle as ‘plastic. ‘ Many divide the mantle into further such as the upper and lower mantle, as well as the asthenosphere and lithosphere.

What is the top part of the mantle called?

The crust and the upper layer of the mantle together make up a zone of rigid, brittle rock called the Lithosphere. The layer below the rigid lithosphere is a zone of asphalt-like consistancy called the Asthenosphere. The asthenosphere is the part of the mantle that flows and moves the plates of the Earth.

What are the heterosphere and homosphere?

Homosphere refers to the lower part of the atmosphere, up to about 60 miles, in which there is no great change in its composition. Meantime, heterosphere refers to the upper part of the atmosphere, above about 60 miles, in which there is a greater variation in its composition.

What 2 layers make up the atmosphere?

Based on chemical composition, the atmosphere is divided into two broad layers: the homosphere and the heterosphere.

What are the 3 layers of the mantle?

What are the three layers of the Earth’s mantle?

• Crust: the main crust and the lithosphere (bottom of crust shared with upper mantle).
• Mantle: lithosphere (shared with crust), asthenosphere, central mantle (transition zone) and lower mantle.
• Core: inner core (solid) and outer core (liquid).

What is mantle asthenosphere?

asthenosphere, zone of Earth’s mantle lying beneath the lithosphere and believed to be much hotter and more fluid than the lithosphere. The asthenosphere extends from about 100 km (60 miles) to about 700 km (450 miles) below Earth’s surface.

What is LLC and MAC?

Logical link control (LLC) and media access control (MAC) are the two sublayers that form the data link layer of the OSI (Open Systems Interconnection) model.

What is MAC and PHY?

A PHY connects a link layer device (often called MAC as an acronym for medium access control) to a physical medium such as an optical fiber or copper cable. A PHY device typically includes both physical coding sublayer (PCS) and physical medium dependent (PMD) layer functionality.

What are 2 facts about the mantle?

Five facts about the mantle include:

• The mantle makes up 84% of Earth’s volume.
• The mantle extends from 35-2980 kilometers below Earth’s surface.
• The mantle is mostly solid rock.
• The mantle ranges in temperatures from 200 to 4000 degrees Celsius.
• Convection currents in the mantle drive plate tectonics.

What are the two most important things about the mantle?

Most kimberlites surfaced long ago. The two most important things about the mantle are as follows: It is made of semi-solid rock. It is hot.

What are 2 metals found in the outer core?

The outer core, about 2,200 kilometers (1,367 miles) thick, is mostly composed of liquid iron and nickel.

What are the two layers of heterosphere?

Answer and Explanation: The heterosphere includes the thermosphere and the exosphere.

What is the meaning of homosphere?

The homosphere is the lower segment of the two-part division of atmosphere and further consists of three regions namely troposphere, stratosphere and mesosphere. All the three regions have the same composition of air.

Where are the ionosphere and exosphere?

What and where are the ionosphere and exosphere? Ionosphere: is the lower layer of the thermosphere. This is where earth’s communication is located along with the aurora borealis. Exosphere: is the upper layer of the thermosphere.

What are the two sub-layers of the mantle made of?

Both sub-layers of the mantle are made up of silicon, oxygen, iron and magnesium. Now the outer and inner core can be called sub-layers, but for some reason the are Earth has 4 layers. First, the crust, then the mantle comes after. Finally the inner and outer core. The crust’s sub-layers are the oceanic and continental sub-layers.

What are the two parts of the upper mantle?

Two parts of the upper mantle are often recognized as distinct region s in Earth’s interior: the lithosphere and the asthenosphere. The lithosphere is the solid, outer part of the Earth, extending to a depth of about 100 kilometers (62 miles).

What is the mantle?

The mantle is the mostly-solid bulk of Earth’s interior. The mantle lies between Earth’s dense, super-heated core and its thin outer layer, the crust. The mantle is about 2,900 kilometers (1,802 miles) thick, and makes up a whopping 84% of Earth’s total volume .

What is the composition of the Earth’s mantle?

Earth’s mantle. The interior of Earth, similar to the other terrestrial planets, is divided into layers of different composition. The mantle is a layer between the crust and the outer core. Earth’s mantle is a silicate rocky shell with an average thickness of 2,886 kilometres (1,793 mi). The mantle makes up about 84% of Earth’s volume.