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MOST IMPORTANT FACTS ABOUT EARTH AND GK FACTS (OCEANS AND CONTINENTS)


FACTS ABOUT EARTH

1.   Third nearest planet to the sun.

2.   The shape of the earth is “Geoid”.

3.   The earth appears blue because its two-third surface is covered with water.

4.   Earth rotates about its the axis which changes day and night.

5.   Earth completes one revolution around the sun in 365 days. Change of seasons is the effect of the earth revolution.

6.   The atmosphere of the earth which is a blanket of air surrounding the earth has many gases like

a)  78% nitrogen

b) 21% oxygen

c)  And other gases

 

7.   Earth surface is covered with 70% water and 30% land approximately.

8.   Earth has one natural satellite called moon.

9.   Earth is the only planet that supports life.

10. There are three main components of earth’s environment.

a.  Lithosphere (solid part like land)

b.  Atmosphere (gaseous banket of earth called air)

c.   Hydrosphere (Water on the earth)

11.Biosphere: The part of earth where we find land, water and air together.

 

12. 97% of the earth atmosphere is found in oceans which is too salty for human use. The five major oceans are:

a.  Pacific

b.  Antarctic

c.   Indian

d.  Southern

e.  Arctic

13. Deepest part of earth “MARIANA TRENCH” lies in Pacific Ocean.

14. The ocean named after a country is Indian ocean.



LITHOSPHERE

1.    It is the solid portion of earth.

2.    Rocks of earth and thin soil layer of earth are its parts.

3.    The complete landmass of earth is divided in continents.

 

a.    ASIA

·      largest continent.

·      Continent lies in eastern hemisphere

·      India lies in south Asia


b.   AFRICA

·      Second largest continent

·      Large part lies in northern hemisphere and rest in southern hemisphere

·      World’s largest desert “Sahara Desert” is in north Africa

·      World’s longest river “Nile” flows in Africa.

·      It is bounded on all sides by seas and oceans


c.    NORTH AMARICA

·      Third largest continent.

·      It is linked to South America by a very narrow strip of land called the Isthmus of Panama.

·      The continent lies completely in the Northern and Western Hemisphere.


a.    SOUTH AMERICA

·      It lies in southern hemisphere to the south of north America.

·      World’s longest mountain range “Andes” lies in this continent.

·      World’s largest river “Nile” flows in this continent


b.   ANTARCTICA

·      It is located in the southern polar region of the earth.

·      It is permanently covered with thick ice sheets.

·      There is no permeant human settlement.


c.    EUROPE

·      It is to the west of asia.

·      Ural mountain range separates aisa and europe.

·      It is surrounded with water bodies on three sides.


d.   AUSTRALIA

·      It lies in southern hemisphere.

·      Surrounded by oceans on all sides.

·      Smallest continent

Also called island continent.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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