Fri. Jan 10th, 2025

Front Cyclone and Anticyclone

  1. What are secondary cyclones and how are they formed?

    Options:
    1. Cyclones that develop due to the passage of warm winds over cold sea
    2. Cyclones that develop due to the passage of cold winds over warm sea after the occlusion of the main cyclone
    3. Cyclones that develop due to the passage of warm winds over warm sea
    4. Cyclones that develop due to the passage of cold winds over cold sea

    Option: B

  2. What are the characteristic features of temperate cyclones?

    Options:
    1. High pressure in their centres and open isobars
    2. Low pressure in their centres and closed isobars
    3. High pressure in their centres and closed isobars
    4. Low pressure in their centres and open isobars

    Option: B

  3. The average diameter of an ideal temperate cyclone is

    Options:
    1. 150 km
    2. 640 miles
    3. 1000 km
    4. 1900 km

    Option: D

  4. The vertical extent of an average cyclone is

    Options:
    1. 10-12 km
    2. 1-2 km
    3. 20-25 km
    4. 5-7 km

    Option: A

  5. The typical velocity at which temperate cyclones move eastward under the influence of westerly winds is

    Options:
    1. 10 km per hour in summers and 20 km per hour in winters
    2. 32 km per hour in summers and 48 km per hour in winters
    3. 60 km per hour in summers and 80 km per hour in winters
    4. 100 km per hour in summers and 120 km per hour in winters

    Option: B

  6. The direction of wind in the southern hemisphere in a temperate cyclone is

    Options:
    1. Anticlockwise
    2. Clockwise
    3. Westerly
    4. Easterly

    Option: B

  7. What causes the wind direction to become anticlockwise in the northern hemisphere in a temperate cyclone?

    Options:
    1. Friction and coriolis force
    2. Convection currents
    3. The convergence of two contrasting air masses
    4. The rotation of the Earth

    Option: A

  8. What is the wind system in a temperate cyclone?

    Options:
    1. Winds blow from the centre towards the periphery
    2. Winds blow from the periphery towards the centre
    3. Winds blow in a circular motion around the centre
    4. Winds blow in a straight line from east to west

    Option: B

  9. Which of the following is characterized by warm southerly and southwesterly winds?

    Options:
    1. Cold front
    2. Cold sector
    3. Warm front
    4. Warm sector

    Option: D

  10. A line along which wind changes its direction is called

    Options:
    1. Wind change line
    2. Wind shift line
    3. Wind rotation line
    4. Wind direction line

    Option: B

  11. What causes the different temperatures in different parts of temperate cyclones?

    Options:
    1. Convergence of two thermally similar air masses
    2. Convergence of two thermally contrasting air masses
    3. High moisture content in the air
    4. General weather conditions

    Option: B

  12. Which part of the temperate cyclone records the highest temperature?

    Options:
    1. Northern part
    2. North-eastern part
    3. Southern part
    4. Western part

    Option: C

  13. In which direction do isotherms generally tend in the northern hemisphere?

    Options:
    1. North-south
    2. South-north
    3. East-west
    4. West-east

    Option: B

  14. What are the paths followed by temperate cyclones called?

    Options:
    1. Cyclonic tracks
    2. Storm tracks
    3. Temperate tracks
    4. Wind tracks

    Option: B

  15. In which latitudes do most temperate cyclones occur?

    Options:
    1. 5°-35°
    2. 35°-65°
    3. 65°-90°
    4. 0°-5°

    Option: B

  16. Which direction do temperate cyclones generally move?

    Options:
    1. Westward
    2. Eastward
    3. Northward
    4. Southward

    Option: B

  17. What are the most favourable breeding areas of temperate cyclones?

    Options:
    1. Arctic region
    2. Equatorial region
    3. Middle and high latitudes
    4. Low latitudes

    Option: C

  18. Which of the following is NOT one of the principal areas of frontogenesis in North America?

    Options:
    1. Area east of Sierra Nevada Range
    2. Eastern Colorado
    3. Area east of Canadian Rocky mountains
    4. Great Lakes region

    Option: D

  19. What are the different parts of temperate cyclones associated with?

    Options:
    1. Varying wind speeds
    2. Different types of air masses and varying temperature conditions
    3. Heavy precipitation
    4. Strong thunderstorms

    Option: B

  20. What weather conditions are observed when a temperate cyclone arrives at an observation point?

    Options:
    1. Wind speed increases considerably
    2. Air pressure increases
    3. Temperature suddenly decreases
    4. Wind velocity slows down considerably, air pressure decreases and the sun and the moon are encircled by halo.

    Option: D