Geography
Give a geographical reason for each of the following:
(i) Variations in the type of climate in different regions of India.
(ii) Most parts of India receive rainfall between June and September.
(iii) South-West Monsoon withdraw from northern India in October.
Answer
(i) India has a varied climate due to the presence of various relief features like mountains, deserts, presence of seas etc. Further the large latitudinal extent, altitude, presence of many mountain ranges and nearness to the oceans results in different climatic conditions in different regions.
(ii) Most parts of India receive rainfall between June and September because the differential heating of land and sea during summer season causes the monsoon winds to drift towards the subcontinent.
(iii) South-West Monsoon withdraw from northern India in October because the monsoon trough of low pressure over the Ganga plains becomes weaker due to the apparent southward movement of the sun. The low pressure trough is gradually replaced by high pressure.
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