Question

Write a note on crust and core layers of earth
surface​

Answer 1

Earth's interior is generally divided into three major layers: the crust, the mantle, and the core. The hard, brittle crust extends from Earth's surface to the so-called Mohorovicic discontinuity, nicknamed the Moho.

Answer 2

Answer:

Crust:

The uppermost layer over the earth's surface is called the crust. It is the thinnest of all the layers. It is about 35km. On the continental masses and only 5km. On the ocean floors.

Core:

The innermost layer is the core with a radius of about 3500km.

Mainly three cores are there :

1)Core mantle boundary :

The core–mantle of the Earth lies between the planet's silicate mantle and its liquid iron-nickel outer core. This boundary is located at approximately 2891 km (1796 mi) depth beneath the Earth's surface.

2) Outer core :

Earth's outer core is a fluid layer about 2,400 km (1,500 mi) thick and composed of mostly iron and nickel that lies above the earth solid inner core and below its mantle.

3) Inner core :

The inner core is a hot, dense ball of iron. It has a radius of about 1,220 kilometers (758 miles). Temperature in the inner core is about 5,200° Celsius. The pressure is nearly 3.6 million atmosphere (atm).

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