How do scientists believe the Earth's four layers were formed - Social Science - Inside Our Earth

Question

How do scientists believe the Earth's four layers were
formed?

P. Sujatha · Accepted Answer

1) The different layers of Earth are Crust, mantle, outer core and
inner core

2) Crust is the outer part or the solid shell which is composed of
variety of igneous, metamorphic and sedimentary rocks

3) Mantle is the second layer of the Earth and is composed of hot
and thick rocks that floats under different temperature zones and
because of this movement tectonic plates of Earth move on the
surface

4) The core of Earth is composed of very hot metals and as a
result, outer core consists of metals in liquid state due to tis
range of very high temperature in this layer

5) The inner core of Earth is even more hotter than outer core and
hence, metals found here are in molten condition

How do scientists believe the Earth's four layers were formed?