Question

Describe the interior of the earth​

Answer 1

Explanation:

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

Crust

• It is the outermost solid part of the earth, normally about 8-40 kms thick.
• It is brittle in nature.
• Nearly 1% of the earth’s volume and 0.5% of earth’s mass are made of the crust.
• The thickness of the crust under the oceanic and continental areas are different. Oceanic crust is thinner (about 5kms) as compared to the continental crust (about 30kms).
• Major constituent elements of crust are Silica (Si) and Aluminium (Al) and thus, it is often termed as SIAL

Mantle

• the portion of the interior beyond the crust is called the mantle.
• It is in a solid-state.
• It has a density higher than the crust portion.
• The thickness ranges from 10-200 km.

• The crust and the uppermost part of the mantle are called the lithosphere.
• The major constituent elements of the mantle are Silicon and Magnesium and hence it is also termed as SIMA

Core

• The core-mantle boundary is positioned at the depth of 2,900 km.
• The inner core is in the solid-state whereas the outer core is in the liquid state.
• The core is made up of very heavy material mostly constituted by nickel and iron. Hence it is also called the “nife” layer.