Fri. Jan 10th, 2025

Atmospheric Extreme Events and Hazards

  1. How many houses were destroyed due to the cyclones?

    Options:
    1. 4,000
    2. 14,000
    3. 40,000
    4. 400,000

    Option: C

  2. Which cyclonic storm hit the Andhra coast on May 9, 1990 and was 25 times stronger than the deadliest cyclone of November 1977?

    Options:
    1. Cyclone of 1864
    2. Cyclone of 1839
    3. Cyclone of 1789
    4. Cyclone of May 9, 1990

    Option: D

  3. How many direct warning systems were in place during the May 9, 1990 cyclone?

    Options:
    1. More than 100
    2. Less than 50
    3. Exactly 50
    4. None

    Option: A

  4. Which coastal region of India was struck by a very powerful cyclonic storm in June 1998, causing a surging tidal wave of 8 m height?

    Options:
    1. West Bengal
    2. Orissa
    3. Andhra Pradesh
    4. Gujarat

    Option: D

  5. What was the date of the super cyclone that hit the Orissa coast in 1999?

    Options:
    1. October 18
    2. October 25
    3. October 29
    4. October 31

    Option: C

  6. What was the velocity of the cyclone that hit Ganjam district on October 18, 1999?

    Options:
    1. 200 km per hour
    2. 260 km per hour
    3. 300 km per hour
    4. 350 km per hour

    Option: A

  7. How many coastal districts were affected by the super cyclone?

    Options:
    1. 6
    2. 8
    3. 10
    4. 12

    Option: C

  8. According to N. Strahler, what is a thunderstorm?

    Options:
    1. A local storm associated with large, dense cumulonimbus clouds
    2. A global circulation of the atmosphere
    3. A type of tornado
    4. A type of hurricane

    Option: A

  9. What is the main source of energy for a thunderstorm?

    Options:
    1. Solar radiation
    2. Kinetic energy of wind
    3. Latent heat of condensation and fusion
    4. Gravitational potential energy

    Option: C

  10. Which of the following is NOT a characteristic of a thunderstorm?

    Options:
    1. Swift upward movement of air (updraft)
    2. Heavy precipitation
    3. Cloud thunder and lightning
    4. Strong horizontal winds

    Option: D

  11. According to G.T. Trewartha, what is a thunderstorm?

    Options:
    1. A thermodynamic machine
    2. A type of tropical cyclone
    3. A type of tornado
    4. A type of lightning

    Option: A

  12. What is the difference between thunderstorms and cyclones?

    Options:
    1. Thunderstorms are circular in shape while cyclones have strong updraft of air.
    2. Thunderstorms have winds blowing from outside towards the center while cyclones are characterized by strong updraft of air.
    3. Thunderstorms are considered to be special case of convective mechanisms while cyclones are powerful local storms.
    4. There is no difference between thunderstorms and cyclones.

    Option: B

  13. What are the salient features of thunderstorms?

    Options:
    1. Thunderstorms have winds blowing from outside towards the center.
    2. Thunderstorms are considered to be powerful local storms.
    3. Thunderstorms have several convective cells which make them not only enormous convective machines but also most disastrous.
    4. All of the above.

    Option: D

  14. What is the source of potential energy in thunderstorms?

    Options:
    1. Momentum of the storm
    2. Upward movement of air
    3. Latent heat of condensation and fusion
    4. Kinetic energy of the storm

    Option: C

  15. Which type of thunderstorm is more powerful and violent?

    Options:
    1. Thunderstorms having several convective cells
    2. Thunderstorms having a single convective cell
    3. Tropical thunderstorms
    4. Temperate thunderstorms

    Option: A

  16. What are mesoscale convective complexes?

    Options:
    1. Powerful local storms in tropical regions
    2. Powerful local storms in temperate regions
    3. Powerful local storms formed by the coalescence of thunderstorms
    4. Powerful local storms characterized by strong updraft of air

    Option: C

  17. What is the nature of vertical movement of moist air in thunderstorms?

    Options:
    1. Vertical movement of moist air is not a feature of thunderstorms
    2. Vertical movement of moist air is linear
    3. Vertical movement of moist air is cellular
    4. Vertical movement of moist air is circular

    Option: C

  18. What is the main factor responsible for the development of thunderstorms?

    Options:
    1. Surface cooling through intense insolation
    2. Atmospheric stability and calm winds
    3. Warm, moist and rising unstable air
    4. Low humidity and dry weather

    Option: C

  19. Why do thunderstorms mainly occur during summer season and warm hours of a day?

    Options:
    1. Because of surface cooling through intense insolation
    2. Because of atmospheric stability and calm winds
    3. Because of warm, moist and rising unstable air
    4. Because of high humidity and wet weather

    Option: C

  20. What is the necessary condition for thunderstorms to develop?

    Options:
    1. The atmospheric conditions should be in a stable state
    2. The normal lapse rate should be less than the adiabatic rate of temperature change
    3. There should be cool and dry air
    4. There should be warm, moist and rising unstable air

    Option: D