Describe the structure of the earth (in detail and point by point)
Answers
The structure of the earth is divided into four major components: the crust, the mantle, the outer core, and the inner core. Each layer has a unique chemical composition, physical state, and can impact life on Earth's surface.
Explanation:
No one has actually seen the internal structure of the earth. We can only imagine the internal structure of the earth. So far the Human have entered up to 15 km depth of the earth. Beyond 15 km. the temperature of the earth is so high that it can even melt the iron.
The earth's interior consist of three layers which are---
Crust - composed of SI and AL.
Mantle - composed of SI and Magnesium (SIMA)
the Core- composed of NI and Fe (NiFe).
Crust
The uppermost layer over the earth’s surface is called the crust. It is the layer which support life on the earth.It is the thinnest of all the layers. It is about 100 km. on the continental masses and only 5 km. on the ocean floors.
Manlte
Just beneath the crust is the mantle which extends up to a depth of 2900 km below the crust. This layer is in liquid state on which the tectonic plates keep floating.The tectonic plates keep floating on the liquid cold and hot mantle.
Core
The innermost layer is the core with a radius of about 3500 km. Core is also called Barysphere.It is mainly made up of nickel and iron and is called nife (ni – nickel and fe – ferrous i.e. iron).
I hope this helped!