This slide (from www.correcteducate.blogspt.com) shows how interesting the geography of earth, go for the knowledge and don't forget to visit the website for more.

1. WELCOME
TO
THE PRESENTATION
www.correcteducate.blogspot.com

2. MOTHER EARTH FACTS
Our mother earth a Blue Planet is the densest of all planets, its shape is geoid.
 Earth Circumference: 40,232 Kilometers.
 Earth Area: 510 million Square Kilometers
 Average distance from sun: 149 million Kilometers.
 Earth Perihelion: Nearest position of earth to sun. The earth reaches its perihelion
on January 3 every year at a distance of about 147 million-Kilometers.
 Aphelion: Farthest position of earth from sun. The earth reaches its aphelion on
July 4, when the earth is at a distance of 152 million Kilometers.
 The shape of the earth is oblate spheroid or oblate ellipsoid (i.e. almost spherical,
flattened a little at the poles with a slightbulge at the center).
 The shape of the earth is oblate spheroid or oblate ellipsoid (i.e. almost spherical,
flattened a little at the poles with a slightbulge at the center).

3. EARTH MOVEMENTS
Our mother earth a Blue Planet is the densest of all planets, its shape is geoid.
ROTATION
 Spins on its imaginary axis from west to east in 23 hrs, 56min & 40.91 sec.
 Rotational velocity at equator is 1667 Kilometers/h & it decreases towards the
poles, where it is zero.
 Rotation of the earth results in day & night called earth day.
 A difference of one hour between two meridians which are 15° apart.
 Change in the direction of wind & ocean currents; Rise & fall of tides everyday.
 The longest day in North Hemisphere is June 21, while shortest day is on 22 Dec
(Vice-versa in southern Hemisphere).
 Days & nights are almost equal at the equator.

4. EARTH MOVEMENTS
Our mother earth a Blue Planet is the densest of all planets, its shape is
geoid.
REVOLUTION
 It is earth’s motion in elliptical orbit around the sun. Earth’s average orbital velocity
is 29.79 Kilometers/s.
 Takes 365 days, 5 hrs, 48 min & 45.51 sec. It results in one extra day every fourth
year.
 It results in change of seasons
 Causes variation in the lengths of days & nights at different times of the year
Shifting of wind belts
 Determination of latitudes.

5. INTRESTING DAYS
Our mother earth a Blue Planet is the densest of all planets, its shape is
geoid.
 Summer Solstice : The day of 21st June when the sun is vertically overhead at the
Tropic of Cancer (23°30’N).
 Winter Solstice : The day of 22nd December when the sun is vertically overhead at
the Tropic of Capricorn (23°30’S).
 On 21st March and 23rd September, direct rays of the sun fall on the equator. At
this position, neither of the poles is tilted towards the sun; so, the whole earth
experiences equal days and equal nights. This is called an equinox.
 On 23rd September, it is autumn season in the Northern Hemisphere and spring
season in the Southern Hemisphere.
 21st March, when it is spring in the Northern Hemisphere and autumn in the
Southern Hemisphere.

6. INTRESTING DAYS
Our mother earth a Blue Planet is the densest of all planets, its shape is
geoid.

7. WORLD GEOGRAPHY
WATER 70% AND LAND 30% ON THE
SURFACE
CONTINENTS
Asia 29.9% approx.
Africa 20.2% approx.
North America 16.3% approx.
South America 11.9% approx.
Antarctica 9.3% approx.
Europe 6.6% approx.
Australia 5.7% approx.
WATER 70% AND LAND 30% ON THE SURFACE
OCEANS (PAISA)
P Pacific
A Atlantic
I Indian
S Southern
A Arctic

8. STRAITS OF THE
WORLD
A Strait is a narrow channel of the sea joining two larger bodies of water. It most commonly refers to a
channel of water that lies between two land masses.
STRAITS
 1. Malacca Strait Andaman Sea & South China Sea (Indonesia –Malaysia)
 2. Palk Strait Palk Bay & Bay of Bengal (India-Sri Lanka)
 3. Sunda Strait Java Sea & Indian Ocean (Indonesia)
 4. Bab-el-Mandeb Strait Red Sea & Gulf of Aden (Yemen-Djibouti)
 5. Cook Strait South Pacific Ocean New Zealand (North & South Islands)
 Bass Strait Tasman Sea & South Sea (Australia)
 Bering Strait Bering Sea & Chuksi Sea (Alaska-Russia)
 Dover strait English Channel & North Sea
 Hormuz Strait Gulf of Persia & Gulf of Oman
 Gibraltar Strait Mediterranean Sea & Atlantic Ocean (Spain-Morocco)

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