Q2 of 11 Page 56

Give reason.

There are more salt-pans on the Western coast of India than its eastern coast.

West coast is coast of submergence while east coast is an emergent coast. These imply that sea is deeper in west coast than sea on east coast. So, west coast has favourable conditions for natural harbours. West Rivers form estuaries and eastern rivers form delta. Therefore it becomes difficult for ships to reach the east coast covered with sediments. High Tides hit coast real hard. So coastal erosion, natural ports, because of these conditions there are more salt-pans on the Western coast of India than its eastern coast.


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2

Give reason.

Oceans located at the same latitude do not have same salinity.

 2

Give reason.

With increasing depth, the temperature of sea water decreases to a certain limit.

 2

Give reason.

Salinity increases in the midlatitudinal zones.

 3

Answer the following questions.

A) What are the factors affecting the salinity of the sea water?


B) Explain the distribution of salinity around the Tropic of Cancer and tropic of Capricorn.


C) What are the factors affecting the temperature of the sea water?


D) Explain the changes occurring in the temperature of sea water according to the depth.


E) Name the factors affecting salinity.