Atmospheric Circulation And Weather Systems

10 Questions
  1. 1
    With reference to "Coriolis force", which of the following statements is/are correct ?
    1. It increases with increase in wind velocity.
    2. It is maximum at the poles and is absent at the equator.
    Select the answer using the code given below :
    UPSC CSE I - 2024
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    Answer: C. Both 1 and 2

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  2. 2

    Consider the following statements:

    1. Jet streams occur in the Northern Hemisphere only.
    2. Only some cyclones develop an eye.
    3. The temperature inside the eye of a cyclone is nearly 10 °C lesser than that of the surroundings.
    UPSC CSE I - 2020
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    Answer: C. 2 only

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  3. 3
    In the South Atlantic and South-Eastern Pacific regions in tropical latitudes, cyclone does not originate. What is the reason?
    UPSC CSE I - 2015
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    Answer: B. Inter-Tropical Convergence Zone seldom occurs

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  4. 4
    Consider the following statements :
    1. The winds which blow between 30° N and 60° S latitudes throughout the year are known as westerlies.
    2. The moist air masses that cause winter rains in North-Western region of India are part of westerlies.
    Which of the statements given above is/are correct?
    UPSC CSE I - 2015
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    Answer: B. 2 only

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  5. 5

    What causes wind to deflect toward left in the Southern Hemisphere?

    UPSC CSE I - 2010
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    Answer: C. Rotation of the earth

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  6. 6

    Consider the following statements:

    1. In the world, the tropical deserts occur along the western margins of continents within the trade wind belt.
    2. In India, the east Himalayan region gets high rainfall from north-east winds.

    Which of the statements given above is/are correct?

    UPSC CSE I - 2009
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    Answer: A. 1 only

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  7. 7

    Assertion (A): Anticyclonic conditions are formed in winter season when atmospheric pressure is high and air temperatures are low.
    Reason (R): Winter rainfall in northern India causes development of anticyclonic conditions with low temperatures.

    UPSC CSE I - 2001
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    Answer: A. Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

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  8. 8

    Which one of the following weather conditions is indicated by a sudden fall in barometer reading?

    UPSC CSE I - 2001
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    Answer: A. Stormy

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  9. 9
    Figure for the question: Which one of the areas marked as A, B, C & D in the given figure of the cyclone, witnesse…

    Which one of the areas marked as A, B, C & D in the given figure of the cyclone, witnesses heavy torrential short duration rainfall accompanied by thunderstorms?

    UPSC CSE I - 1999
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    Answer: D. D

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  10. 10

    Daily weather map showing isobars is an example of:

    UPSC CSE I - 1997
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    Answer: B. Isopleth map

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