Question

Describe the three layers of the interior of the earth?

Answer 1

The three main layers of the earth are-
Crust
Mantle
Core

Crust-It is the outermost layer of the Earth. It constitutes only 1% of the Earth's mass. It consists of continents and ocean basins. It is mainly composed of alumino-silicates.

Mantle- It is a dense, hot-layer of semi solid rock approximately 2900 km thick. This layer is composed mainly of ferro-magnesium silicates.

Core- Below the mantle is the core. It makes up nearly one -third of the mass of the Earth. This layer consists of two cores- inner and outer. The outer core is made up of iron and is very dense. The inner core is made up of solid iron and nickel.