water and earth-ppt

8/11/2019 Water and Earth-PPT

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WATERANDEARTH


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Earthisoneofver few

planets

in

our

galaxy

that

.

r s


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ean ra us o t e art = ,371 m

Total Surface area of the earth = 4 (6,371)2

= 510,064,472 km2

Of which 29% is Land and 71% is Water (sea, lakes andother Water bodies) [2]


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Hence , total Water surface

= , ,= 362,145,775 km2

The depth of the ocean can range from few meters to amaximum of 10.994 km (Mariana Trench). [3]

The average depth is 3.79 km. [3]

Total volume of Water on earth istherefore

= 362,145,775 x 3.79 km3

= 1,372,532,487 km3

(Cubic Kilometers)


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N w l k

all the 1,372,532,487 cubic kilometers of

And see how terrible the Earth looks without


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8/18

Remember, we extracted 1,372,532,487 km3 of

Right?

Now, lets make a ball out of it

Volume = 1,372,532,487 km3

Hence, the radius of that ball

=

3

, , ,= 689 km = , .


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Thats unimaginable !

,

But, lets compare it with the Earth of

,


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Surprised ?

But, theres more to the story.

Out of this Water ball, 97% of Water are saline, or salt-watermostly distributed as oceans and salt-water lakes. [2]

The remaining 3% are the fresh-waters on the Earth, [2]

Antarctic, Greenland and other Arctic ice-caps,

Glaciers

Groun Water an perma rost groun ce Fresh-water lakes

Rivers

Moisture content in the atmosphere


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Hence the volume of fresh-water on earth= 3% of 1,372,532,487 km3

= 1 1 km3

-huge saline Water ball.


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Still more .

Of this little Fresh-water ball [2]

68. % form ice ca s and laciers

30.1 % form the ground water 0.86 % form the permafrost

.

The remaining 0.3 % forms the fresh-watera es, r vers an swamps. 123,52 m .

on land, including humans, land animals andvegetation.


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Youneedasharpvisiontospotit!


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Do you still think that..,

An you can eep wast ng t

indefinitely


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Save and Recycle Water

an you

Hasan Babu [email protected]


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: . . _ _ _

[2] http://en.wikipedia.org/wiki/Water_distribution_on_Earth

[3] http://en.wikipedia.org/wiki/Ocean

water and earth-ppt

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