There are four main layers that make up the structure of the Earth - the crust, mantle, outer core, and inner core. The crust is the outermost solid rock layer that makes up only 1% of the Earth's volume. Beneath the crust is the mantle, which constitutes 85% of the Earth's mass and has an upper and lower section with the lower mantle existing as liquid rock. At the center are the outer core, made up of liquid iron and nickel, and the solid inner core composed of iron and nickel crystals.

1. Layers of Earth

2. There are three layers of earth:-
Crust
Mantle
Outer Core
Inner Core

3. 1.Crust
1.The outer cool layer on which we live is called Crust.
2.It is outermost layer of the earth.
3. It consisits Farms , Animals , Plants , Water and Air .
4.There are two types of
Crust
1.Oceanic Crust
2.Continental Crust
Q.How much of the earth does the crust cover?
Answer :- 1 %
Q.From what `Crust' Is made
Answer :- It is made up of Solid Rocks and Minerals.

4. 2.Mantle
1.It is 2nd layer of the earth.
2.It is layer below the Crust.
3. It is very hot.
4.It consists of rocks in molten form.
5.It is 2,900 Km thick.
6.The average temperature of the mantle is 3000° Celsius.
7.the mantle is made up of 44.8% oxygen, 21.5% silicon, and 22.8% magnesium.
Q.How old is the mantle?
Answer :- 4.5 billion years old
Q. How deep is the Earth's mantle ?
Answer :- 2,890 km
8.There are several layers of Mantle. But there are two important Layers : Upper mantle and lower mantle.
9.Upper mantle is made up of about 55% olivine and 35% pyroxene and 5 to 10% of calcium oxide and aluminum oxide.
10.The upper mantle is mostly solid.
11.The thickness of the upper mantle is about 640 km.
12.The thickness of lower mantle is .2,171 km.
13.The lower mantle is in liquid form.
14.It is more hotter than upper mantle.
15.Mantle covers 85 % of earth' s mass.

5. Mantle

6. 3.Core
1.There are two parts of core :- Outer core and Inner core.
2. Earth's outer core is made up of super hot liquid molten substance called lava.
3. This lave is made of Iron and nickel.
4.It is 3000 miles long.
5. It is 2,200 kilometers thick.
7.It extends 900 miles.
6.Inner core is a solid ball made of Iron and Nickel.
8.It is the hottest part of the earth.
9.Inner Core is as hot as Sun.

7. Inner core and
Outer core