Question

with the aids of diagram,describe the internal structure of the earth

Answer 1

Answer:

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Earth's crust:-

There are two different types of crust: thin oceanic crust that underlies the ocean basins, and thicker continental crust that underlies the continents. These two different types of crust are made up of different types of rock. The thin oceanic crust is composed of primarily of basalt, and the thicker continental crust is composed primarily of granite. The low density of the thick continental crust allows it to "float" in high relief on the much higher density mantle below.

Earth's mantle:-

Earth's mantle is thought to be composed mainly of olivine-rich rock. It has different temperatures at different depths. The temperature is lowest immediately beneath the crust and increases with depth. The highest temperatures occur where the mantle material is in contact with the heat-producing core. This steady increase of temperature with depth is known as the geothermal gradient.

Earth's core:-

Earth's Core is thought to be composed mainly of an iron and nickel alloy. This composition is assumed based upon calculations of its density and upon the fact that many meteorites (which are thought to be portions of the interior of a planetary body) are iron-nickel alloys. The core is earth's source of internal heat because it contains radioactive materials which release heat as they break down into more stable substances.

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Answer 2

Answer:

Explanation:    

1. Lithosphere or crust:- This can be defined as the outermost layer of the earth surface, it has two layer which are Sial [upper layers] and Sima [lower layers.the upper layer which is the called the sial forms the continents which contains rock rich in silica and aluminium while the lower layer which is called the sima forms like the ocean flood. it has an average density of 3.0 and contains rock rich in silica and magnesium, The end of Sima is market by a zone called ''Moho'' or ''Mohorovic'' discontinuity zone''.                                                                

• Mantle or mesosphere :-This is found beneath the molus.it is in plastic or semi-solid state which is very cleanse with an average density of 3.3. Rocks here are dark in color because they are one in iron and magnesium , the main mineral in mantle is known as ''Olivine''.

• Core or Barrysphere:- This is the innermost layer of the earth interior.it occupies the entry central position of the earth interior ,it is usually in motten state .The rocks here are rich in Nickle and iron hence the name [Nife], The  thickeness of the core is about 3,476km  while the earth core is under very high temperature [2,000 degrees]and pressure .0 ,the rocks are mainly igneous .            SORRY I COULDN'T GET A DIAGRAM BUT I HOPE THE EXPLIANATION WAS RATHER HELPFUL , PLEASE MARK ME BRAINLIEST THANKS