Fri. Jan 10th, 2025

General Atmospheric Circulation

  1. Most of the hot and dry tropical deserts are found within the latitudinal zones of

    Options:
    1. 20°-30° in both the hemispheres
    2. 30°-40° in both the hemispheres
    3. 10°-20° in both the hemispheres
    4. 50°-60° in both the hemispheres

    Option: A

  2. Most of the hot and dry tropical deserts are located within the latitudinal zones of 20°-30° situated in

    Options:
    1. The western parts of the continents in both the hemispheres
    2. The eastern parts of the continents in both the hemispheres
    3. The middle parts of the continents in both the hemispheres
    4. None of the above

    Option: A

  3. Which of the following pairs is not correctly matched Desert Continent

    Options:
    1. Kalahari North America
    2. Atacama South America
    3. Thar Asia
    4. Sahara Africa

    Option: A

  4. Read the following statements about westerlies carefully:

    1. The general direction of the westerlies is S.W. to N.E. in the northern hemisphere and N.W. to S.E. in the        southern hemisphere  
    2. The westerlies are more complex and complicated in the northern hemisphere
    3. westerlies bring much precipitation in the eastern parts of the continents

    Which of the statements is/are true?

    Options:
    1. Only 1
    2. Only 2
    3. Only 1 and 2
    4. Only 1 and 3

    Option: C

  5. Read the following statements about westerlies carefully:

    1. Westerlies bring much precipitation in the western parts of the continents  
    2. Westerlies are more vigorous in the southern hemisphere

    Which of the statements is/are true?

    Options:
    1. Only 1
    2. Both 1 and 2
    3. Neither 1 nor 2
    4. Only 2

    Option: B

  6. The westerlies are more vigorous in the southern because of

    Options:
    1. Lack of land
    2. Dominance of oceans
    3. Both A and B
    4. Dominance of land

    Option: C

  7. The westerlies are called roaring forties between the latitudes of

    Options:
    1. 20°-30° in both the hemispheres
    2. 30°-40° in north hemispheres
    3. 40°-50° in south hemispheres
    4. 50°-60° in both the hemispheres

    Option: C

  8. The westerlies are called furious fifties at the latitudes of

    Options:
    1. 40° S
    2. 40° N
    3. 50° S
    4. 50° N

    Option: C

  9. The westerlies are called shrieking sixties at the latitudes of

    Options:
    1. 40° N
    2. 60° S
    3. 50° S
    4. 50° N

    Option: B

  10. The strong and rapidly moving westerly air circulation in a narrow belt in the upper limit of troposphere is called

    Options:
    1. Jet stream.
    2. Westerlies
    3. Rossby waves
    4. None of the above

    Option: A

  11. The circulation of westerly jet stream in the upper limit of troposphere is continued between

    Options:
    1. Pole and 20° latitudes in both the hemispheres
    2. Pole and 20° latitudes in north hemispheres
    3. 60° and 20° latitudes in north hemispheres
    4. Pole and 20° latitudes in south hemispheres

    Option: A

  12. When was jet stream discovered

    Options:
    1. In 1950's
    2. During first world war
    3. During second world war
    4. In 1880's

    Option: C

  13. Read the following statements about jet streams carefully:

    1. The vertical wind shear of jet streams is 5-10m/second (18-36 km/hour)  
    2. Lateral wind shear of jet streams is 5 m/second (18km/hour)
    3. The minimum velocity of jet stream is 30m/second (108 km/hour)

    Which of the statements is/are true?

    Options:
    1. Only 1 and 2
    2. Only 2 and 3
    3. Only 2
    4. All of the above

    Option: D

  14. Read the following statements about jet streams carefully:

    1. The circulation path (trajectory) of jet streams is wavy and meandering  
    2. The wind velocity in jet streams become strong during winter season
    3. The wind velocity becomes twice the velocity during summer season

    Which of the statements is/are true?

    Options:
    1. Only 2
    2. Only 1 and 2
    3. Only 2
    4. All of the above

    Option: D

  15. The wavy jet stream is called

    Options:
    1. Jet stream
    2. Westerlies
    3. Rossby waves
    4. None of the above

    Option: C

  16. The period of transformation of straight path of jet stream to wavy or meandering path iscalled

    Options:
    1. Index cycle
    2. Complete cycle
    3. Rossby waves
    4. Transformation period

    Option: A

  17. The period of transformation (index cycle) of straight path of jet stream to wavy or meandering path complete in

    Options:
    1. Two stages
    2. Three stages
    3. Four stages
    4. Five stages

    Option: C

  18. In which stage of index cycle, meandering course of jet stream is fully developed

    Options:
    1. Two stages
    2. Three stages
    3. Four stages
    4. Five stages

    Option: B

  19. Read the following statements about El Nino Phenomenon carefully:

    1. The southward shifting of the counter equatorial warm current during southern winter  gives birth to El Nino     current
    2. The amount of rainfall increases along the coasts due to this current
    3. The fishes die due to disappearance of planktons and occurrence of guano disease and pests caused by El Nino

    Which of the statements is/are true?

    Options:
    1. Only 3
    2. Only 1
    3. Only 2
    4. All of the above

    Option: D

  20. Read the following statements about El Nino event carefully:

    1. It occurs off the west coast of S. America, mainly off the Peru Coast
    2. The El Nino event was first noticed in the year 1541
    3. It is a subsurface warm current which flows from north to south between 3°S and 36°S latitudes

    Which of the statements is/are true?

    Options:
    1. Only 1
    2. Only 2 and 3
    3. Only 2
    4. All of the above

    Option: D