Question

write about interior of earth?

Answer 1

Hey there !

Earth's interior is made up of a series of layers that sit below the surface crust. In order of depth, these layers include the solid, but flowing mantle, the liquid outer core and the solid iron outer core, which helps create Earth's protective magnetic field.

Hope it helps you !

Answer 2

 it is not possible to know about the earth’s interior by direct observations because of the huge size and the changing nature of its interior composition.It is an almost impossible distance for the humans to reach till the centre of the earth (The earth’s radius is 6,370 km).Through mining and drilling operations we have been able to observe the earth’s interior directly only up to a depth of few kilometers.The rapid increase in temperature below the earth’s surface is mainly responsible for setting a limit to direct observations inside the earth.But still, through some direct and indirect sources, the scientists have a fair idea about how the earth’s interior look like.

Sources of Information about the interior of the earth

Direct Sources:

Rocks from mining areaVolcanic eruptions

Indirect Sources

By analyzing the rate of change of temperature and pressure from the surface towards the interior.Meteors, as they belong to the same type of materials earth is made of.Gravitation, which is greater near poles and less at the equator.Gravity anomaly, which is the change in gravity value according to the mass of material, gives us information about the materials in the earth’s interior.Magnetic sources.Seismic Waves: the shadow zones of body waves (Primary and secondary waves) give us information about the state of materials in the interior.

Structure of the earth’s interior

Structure of earth’s interior is fundamentally divided into three layers – crust, mantle and core.