SSC Geography Sample Paper NCERT Sample Paper-6

  • question_answer
    What are Jet streams and how do they affect the climate of India?
    1. Jet streams are a narrow belt of high altitude (above 12,000m) westerly winds in the troposphere.
    2. In summer, the subtropical westerly jet stream moves north of the Himalayas with the apparent movement of the sun.
    3. An easterly jet stream, called the tropical easterly jet stream blows over peninsular India, approximately over \[14{}^\circ N\] during the summer months.

    A)  Only 1 

    B)  1 and 2

    C)  1 and 3

    D)  1, 2 and 3

    Correct Answer: D

    Solution :

    [d] Their speed varies from about 110 km/h in summer to about 184 km/h in winter. A number of separate jet streams have been identified. The most constant are the mid-latitude and the sub-tropical jet stream. Over India, these jet streams blow south of the Himalayas, all through the year except in summer. The western cyclonic disturbances experienced in the north and north-western parts of the country are brought in by this westerly flow.

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