The Earth is composed of three main layers - the crust, mantle, and core. The crust is the outermost layer and exists in two types, continental and oceanic. The mantle, made up of semi-molten rock, is the thickest layer extending to 2,900 km deep and can be divided into upper and lower sections. At the center is the core, split into a liquid outer core and solid inner core, both made primarily of iron and nickel.

1. HABIBULLAH SOOMRO
MUHAMMAD RASHID
RAHEEL

2. STRUCTURE OF EARTH
Crust, Mantle And Core

3. STRUCTURE OF EARTH
• Earth is the 5th Largest Planet of solar system.
• The age of Earth is about 4.5 billion years ago.
• Its diameter is about 8,000 miles years ago.
• Earh is the third closet to sun.
• Earth is the only planet where life is known to exist.
• The 71% precent to Earth's Surface covered of
water.
• And 29% of Earth is dry pot

4. Earth Layers
• How are the earth layers similar to an egg
• Shell => Crust
• Egg white => Mantle
• Yolk => Core
• Crust is the outermost layer of earth
• It has two types
1. Oceanic crust
2. Continental crust

5. Types Of Crust
1. Continental Crust
• Continental Crust composed of silicon and aluminum (also
called sial)
• It is lighter in weight and less in dense
• 2 Oceanic Crust
• The Oceanic Crust composed of silica and magnesium (Also
called Sima).
• It is found at the bottom of the oceans.
• It is generally harder deeper and dense then continental
crust.

6. MANTLE
• Mantle is thickest and largest layer.
• It is mainly made up semi molten rock
known as magma.
• It extands up to 2900 KM Depth.
• Mantle is devided into two layers
• Upper Mantle
• Low Mantle

7. Upper Mantle
• Upper mantle is viscos with both solid and
plastic characteristics.
• The upper mantle along with the crust
comprises is called lithosphere.
• It's Depth is 35KM to 1000KM

8. Lower Mantle
• Lower mantle is less viscous.
• The Lower mantle is approximately 2900KM
in Depth.
• It is denser and hotter than upper mantle

10. CORE
• At the centre of earth lies the core
• It is very hot and dense layer
• It splits into two sections
• Outer Core And Inner Core.

11. Outer Layer
• It extands up to 5100 KM in depth
• It's temperature is 4000'C
Inner Core
• Inner Core is liquid mass of iron and nickel.
• It is extands up to 6200 KM in Depth.
• It's temperature is about 6000'C

12. THANK YOU
YOU CAN ASK QUESTION FROM OUR
PRESENTATION