🌍 THE INTERNAL STRUCTURE OF THE EARTH 🌎

THE LAYERS OF THE INNER INTERIOR OF THE EARTH

The interior of the Earth is divided into three layers. These divisions are:
   1.CRUST.
   2.MANTLE.
   3.CORE.

* CRUST :-
The three layers of the earth, the solid stone layer on top of it is called  Crust. The crust is the lightest layer in the three layers of the earth. The crust is made by silica, aluminum and magnesium material. Crust is composed of volcanic rock, sedimentary rock and converted rock. The crust is divided into two layers. These layers are "SIAL" and "SIMA".

# SIAL :-  The upper part of the crust is "SIAL". This layer is also called continental crust. It mainly consists of silicon and aluminum. This layer is the lightest layer. We live on this layer. All the continents of the world are on this layer. This layer is floating on the "SIMA" level.

# SIMA :- The lower part of the crust is "SIMA". This layer is made of silicon and magnesium. This layer is a relatively heavy layer. The layer is called ocean crust. All the oceans in the world are at this layer.

* MANTLE :-
The level up to the depth of 2900 kilometers below the crust is called "Mantle". This layer is divided into two layers. These layers are :-
1.Ni-Fe-Si-Ma
2.Cro-Fe-Si-Ma.

 The density of this layer ranges from 3.4 to 4.5 grams per cubic cm. This layer consists of iron, nickel,silica,chromium, magnesium and silicate mineral. This layer is almost half of the Earth. 83% of the Earth's size and 67% of the mass is part of the Mantle.

* CORE :-
The level below 2900 kilometers below the crust is up to the center of the Earth is "Core". The average density of this layer is 13.60 gram per cubic cm. The Earth's magnetic field is in this layer. This layer is made of iron and nickel. The average warmth of this layer is 4000℃. This layer is divided into two layers. These layers are:-
1.Inner Core.
2.Outer Core.