Question

internal structure of earth​

Answer 1

Answer:

The internal structure of the Earth is layered in spherical shells: an outer silicate solid crust, a highly viscous asthenosphere and mantle, a liquid outer core that is much less viscous than the mantle, and a solid inner core.

Answer 2

Answer:

The earth is made up of several layers of material arranged on top of each other. The outermost layer is the thinnest layer, called the solid crust, further classified into oceanic crust and continental crust. The oceanic crust, the crust beneath the oceans, is only 5 kilometres thick while the continental crust is around 35 kilometres thick.  

The oceanic crust, is made up of silica and magnesium, and is called sima while the continental crust is composed of two minerals: silica and alumina and called sial. The next layer is a highly viscous layer called the mantle. The mantle is 2,900 kilometres deep and is thickest among all the layers forming 83% of the earth’s volume. The material inside the mantle is known as magma.  

When the earth’s crust gets ruptured, hot molten magma, ash and gases come out from the core to the surface of the earth. This results in the formation of a volcano and the magma released on the surface of the earth is called lava.

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