Question

Write a paragraph explaining the layers of the Earth.

Answer 1

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Layers of Earth:

✮ GEOSPHERE

♦ The geosphere is the structural part of the Earth that extends from the surface to the interior of the planet.
♦ The geosphere has three parts the mantle, the nucleus and the earth's crust. 

✮ CORTEX

 It is the outermost layer. It is solid and is formed by rocks. This layer is very thin compared to the size of the Earth. 

✮ MANTLE
 
Its temperature is very high and some of its rocks are molten. It receives the name of magma. 

✮ NUCLEUS
 
It is the innermost part and is formed by iron. Its temperature is higher than that of the mantle. The outer part of the nucleus is in the liquid state and the inner part is in the solid state.

✮ HYDROSPHERE

 ♦ The hydrosphere is the whole of the planet's water, in any of its states.
♦ Most liquid water is found in the seas, oceans and salt water.
♦ Fresh water is found on continents and islands. Fresh water is found in rivers, lakes or underground terrains
♦ Water is found in the coldest parts of the planet, especially in polar regions.
♦ The water vapor is in the atmosphere and when it is counted, it forms the clouds.

✮ ATMOSPHERE

♦ The atmosphere is the outermost  layer of Earth. It's an envelope of air. The atmosphere is composed mainly of nitrogen,
♦ Oxygen and less amount of other gases. There are several layers of the atmosphere: 

✮ TROPOSPHERE
 
It is the layer that is closest to the earth's surface, where life develops and where, most of the time, meteorological phenomena occur.

 ✮ STRATOSPHERE
 
The gases it has are separated forming layers or strata. A layer of them is the ozone layer that filters the sun's ultraviolet rays.

 
✮ MESOSPHERE
 
In it space shuttles fly. It is the layer that conducts electricity. It has atoms that are charged with electricity called ions. 

✮ EXPOSURE
 
This layer is mainly composed of hydrogen and helium. It is the last layer of the Earth's atmosphere.

Answer 2

Hi......



CRUST-Comparatively thin outer shell of the earth.
Approximately 40 km thick.
Two parts-Continental Crust,Oceanic Crust
Continental crust-As silica and alumina are the chief contents the continental Crust is also known as SIAL....
Oceanic crust- As silica and magnesium are the chief content the oceanic Crust is also known as SIMA.....


MANTLE-Located beneath the Crust
Extendes upto 2900 km from the Crust
Two parts-upper mantle,lower mantle
Upper mantle-The upper mantle made up of silicon compounds is in a solid state..
Lower mantle-The lower mantle located beneath the upper mantle is in a semi liquid state.....

CORE-Central part of the earth
From 2900 km to 6371 km
Two parts outer core,inner core...