The Structure of the Earth’s Interior : The Structure of the Earth’s Interior Presented By
U R C NO. 6 BHANDUP ,MUMBAI 78 The Structure of the Earth’s Interior : The Structure of the Earth’s Interior The Structure of the Earth’s Interior : The Structure of the Earth’s Interior The entire interior of the earth from surface to the centre is not alike.
It can be divided into 3 main parts according to the nature of the substance it contains, its temperature and depth. The Earth`s Interior : The Earth`s Interior The Crust
The Core The Crust : The Crust The outermost part of the earth is its crust.
It is about 30 to 70 Km under land surface and about 5 to 6 Km under the oceans.
It contains minerals of Aluminium , Magnesium, and Silicon.
It forms only 2% of the total volume of the earth. The Mantle : The Mantle Is about 70 to 2900 Km below the earth’s surface.
It contains minerals of Magnesium and Iron.
It forms about 82% of the total volume of the earth.
Up to a depth of 400 Km, the mantle consists of molten rock and below is made of extremely hard rock. The Core : The Core Inside the mantle is called the earth’s core.
The earth’s core is very hot.
It includes almost 16 % of the earth’s volume.
The central part up to 1200 Km is extremely hot.
It is made of iron and nickel and is like a solid
The part around it , having a thickness of about
2250 Km, is in the liquid state with a
temperature of more than 4000° C. That’s all : That’s all Friends THANKS : THANKS See