learn the inside the earth

1. INSIDE
OUR
EARTH

2. ABOUT THE
EARTH.
. THE EARTH OUR
HOMELAND IT IS
A DYNAMIC
PLANET.
. IT IS
CONSTANLY
UNGERGOING
CHANGE INSIDE
AND OUTSIDE.

3. LAYER OF EARTH

4. INSIDE THE EARTH

5. INSIDE THE EARTH

6. CONCLUSIONS FIGURES

7. CRUST
*THE UPPERMOST LAYER OVER THE EARTH’S SURFACE IS
CALLED CRUST.
*IT IS THE THINNEST OF ALL THE LAYER.
*IT IS ABOUT 35 KM ON THE CONTINENTAL MASSES AND
ONLY 5 KM ON THE OCEAN FLOOR.
*THE MAIN MINERAL CONSTITUENTS OF THE
CONTINENTAL MASSES ARE SILICA AND ALUMINA.
*IT IS THUS CALLED SIAL (SI-SILIC AND AL-ALUMINA)
*THE OCEANIC CRUST MAINLY CONSISTS OF SILICA AND
MAGNESIUM.
*IT IS THEREFORE CALLED SIMA (SI-SILICA AND MI-
MAGENESIUM.)
*IT FORMS 1 % OF THE VOLUME OF THE EARTH

8. LAYER OF CRUST

9. SIAL AND SIMA
 Continental masses are consist of silica &
alumina.
 It is thus called Sial .
 Oceanic crust consist of silica &
magnesium.
 It is called Sima.

10. MANTLE
*Just beneath the crust is the mantle .
*It extends up to a depth of 2900 km below the crust.
*It form 84 % of the volume of the earth.
*It terms of its constituent elements, the mantle is
made up of 44.8 % oxygen , 21.5 % silicon , and 22.8
% magnesium . There ‘s also iron , aluminium ,
calcium, sodium, and potassium. This element are all
bound together in the form of silicate rocks , all of
which take the form of oxides.

11. COrE
*The innermost layer of the earth is the core.
*It ‘s radius is about 3500 km .
*It is mainly composed of nickel and iron and it is
called nife(ni-nickel and fe-ferrous i.e. iron )
*The central core has very high temperature and
pressure.
* It forms 15 % of the volume of the earth.

12. ROCKS AND MINERAL

13. 1. TYPES OF ROCKS

14. 2. TYPS OF ROCKS

15. IGNEOUS ROCKS
Primary rocks.
Becomes solid when molten magma cools
Two types
-Intrusive rocks.
-Extrusive rocks.
Granite is an examples of such a rocks.

16. SEDIMENTARY ROCKS
Large rocks broken down into small
fragment .
Smaller particles are called sediment.
Sandstone is an example.
Contain fossil of plants , animals .

17. METAMORPHIC ROCKS
• IGNEOUS & SEDIMENTARY
Rocks change into it .
Due to great heat and pressure.
Clay change into slate.

18. FOMATION OF ROCKS

19. ABOUT THE ROCKS CYCLE
One types of rocks change into
another types .
Process occurred in a cyclic manner
Known as the rock cycle.

20. 1.ROCKS CYCLE

21. 2. ROCKS CYCLE

22. 3.ROCKS CYCLE

23. 4.ROCKS CYCLE

24. THANK YOU
o MADE BY SHREYANSHI