Inside Our Earth | Interior of the Earth – Class 7 Geography (Social Science)

Planet Earth

Earth is a dynamic planet where hum beings live. The radius of the earth is 6731 km. it is not absolute spherical in shape. Constant changes occur inside and outside the earth.

Interior of the earth

Earth is just like an onion which is made of several layers of earth with one inside another.

Three layers of the earth

The three layers of the earth are as follows-

Crust

It is the uppermost layer of the earth and thinnest among all the layers. It is 5 km from the ocean floor and 35 km from the continental mass. It is formed from the 0.5% of the total earth’s surface and it is less than 1 % of earth’s volume. The crust is fragmented with many plates which float on the mantle. When these plates come closer and get hit, it results in an earthquake.

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