Page 125 - SST Class 07

The amount of salinity varies from place to place. Pacific Ocean
It is higher in the water bodies where evaporation
The Pacific Ocean is the largest ocean covering
is greater, such as the Dead Sea where it is as
about one-third of the earth’s surface. It covers
much as 250 gm per litre. Salinity is lower in the about 46 percent of the total sea area and is more
water bodies where evaporation is lower, such as than the total area of continents put together. It is
the Baltic Sea where salinity is only about 4 gm somewhat triangular in shape and is bounded by
per litre. A greater amount of salinity makes water the continents of Asia and Australia on the west,
dense. This is the reason that a swimmer can float North America and South America on the east,
on the Dead Sea without having to attempt and Antarctica on the south. Not only the largest,
swimming. the Pacific Ocean is also the deepest of all oceans;
its average depth is about 4,215 m. Its deepest
point is at the Mariana Trench which is 11,776 m
Info Bits deep. The Pacific Ocean comprises of a number
Info Bits
of seas, such as the Bering Sea , the Sea of Japan ,
The Caspian Sea is a lake, and not a sea. The the China Sea etc.
amount of salinity in this is as high as 180 gm per
litre. Atlantic Ocean
The Atlantic Ocean separates Europe and Africa
MAJOR WATER BODIES on the east from North America and South

The oceans make up the largest water bodies. America on the west. It is S-shaped and covers
There are four oceans. In the order of their size in nearly one-sixth or about 24 percent of the total
decreasing order, they are—Pacific Ocean , earth’s surface. In the north, it is bounded by
Atlantic Ocean , Indian Ocean Arctic Ocean and Greenland and in the south, it extends right up to
,
Southern Ocean . They are interlinked with one Antarctica. The Atlantic Ocean is the busiest
another. ocean as ships sail between America, and Europe.

ARCTIC OCEAN

NORTH EUROPE
AMERICA ASIA PACI
ATLANTIC OCEAN FIC
TROPIC OF CANCER AFRICA
PACIFIC OCEAN EQUATOR AMERICA ATLANTIC OCEAN INDIAN OCEAN AUSTRALIA EAN OC

SOUTH

TROPIC OF
CAPRICORN

SOUTHERN OCEAN
ANTARCTICA
Oceans
The Hydrosphere
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