Fri. Jan 10th, 2025

Air Masses

  1. What happens to continental cold air mass (cPK) when it moves over the ocean?

    Options:
    1. It becomes colder and more stable
    2. It becomes warmer due to thermodynamic modification
    3. It becomes more humid and produces rainfall
    4. It does not change

    Option: B

  2. What are the effects of the southward movement of continental polar air mass?

    Options:
    1. Heat waves
    2. Fine weather
    3. Heavy rain
    4. Tornadoes

    Option: B

  3. Where do Maritime Polar Atlantic Air Masses (mP) originate?

    Options:
    1. Bermuda
    2. Mexico
    3. Newfoundland
    4. Aleutian Islands

    Option: C

  4. What are the weather characteristics associated with Maritime Polar Atlantic Air Masses (mP)?

    Options:
    1. High temperature, humid and rainy
    2. Low temperature, clear sky and full visibility
    3. High temperature, dry and foggy
    4. Low temperature, foggy and rainy

    Option: B

  5. What happens to Maritime Tropical Atlantic Air Masses (mT) when they cross over the Gulf of Mexico?

    Options:
    1. They become more stable
    2. They become colder and drier
    3. They become modified into maritime tropical unstable air masses (mTKu)
    4. They dissipate

    Option: C

  6. What kind of weather do Maritime Tropical Atlantic Air Masses (mT) bring to the central and eastern USA?

    Options:
    1. Fine and pleasant
    2. Chilly and cloudy
    3. Oppressive and unpleasant
    4. Hot and humid

    Option: C

  7. Where do Maritime Polar Pacific Air Masses (mP) originate?

    Options:
    1. Central America
    2. Newfoundland
    3. Aleutian Islands
    4. Great Plains

    Option: C

  8. What happens to Maritime Polar Pacific Air Masses (mP) when they reach the continental areas?

    Options:
    1. They become colder and more stable
    2. They become warmer and more humid
    3. They become unstable and produce thunderstorms
    4. They dissipate

    Option: A

  9. What kind of weather do Maritime Polar Pacific Air Masses (mP) bring to the west coastal areas of the USA?

    Options:
    1. Hot and dry
    2. Cold and rainy
    3. Cold and dry
    4. Hot and humid

    Option: C

  10. Where do Continental Polar Air Masses (cP) originate from?

    Options:
    1. Over the Atlantic Ocean
    2. Over the Pacific Ocean
    3. Over Siberia and outer Mongolia
    4. Near Bermuda

    Option: C

  11. What is the initial condition of the air masses in their source regions?

    Options:
    1. Warm and humid
    2. Warm and dry
    3. Cold and humid
    4. Cold and dry

    Option: D

  12. How are Continental Polar Air Masses modified when they cross over mountain barriers?

    Options:
    1. They become colder and drier
    2. They become warmer and more humid
    3. They lose their inversion layer
    4. They become stable

    Option: C

  13. In what weather conditions are Continental Polar Air Masses associated with when they enter China?

    Options:
    1. Cloudy and humid
    2. Cloudy and dry
    3. Clear and humid
    4. Clear and dry

    Option: D

  14. Which route do Continental Polar Air Masses enter China through when high pressure lies over Mongolia and North China?

    Options:
    1. Through land surface
    2. Through water surface
    3. Through both land and water surface
    4. They do not enter China under such circumstances

    Option: A

  15. Which of the following statements is true about continental polar air masses during winter season in Asia?

    Options:
    1. They bring abundant moisture from the sea and cause precipitation
    2. They enter the Indian subcontinent and affect its weather conditions
    3. They deposit large amounts of sand and dust as loess
    4. They do not enter the Indian subcontinent due to the barrier of the Himalayas

    Option: D

  16. What is the characteristic of maritime polar air masses during early summer in Japan?

    Options:
    1. They form cyclones when they converge with continental polar air masses
    2. They are deprived of their influences along the eastern coasts of Asia south of Korea
    3. They are associated with clear sky and pleasant weather
    4. They bring moist weather with overcast sky and light precipitation when they converge with maritime tropical air masses

    Option: D

  17. Which of the following statements is true about continental polar air masses during summer season in Asia?

    Options:
    1. They are more dominant than maritime tropical air masses
    2. They effectively influence the weather conditions of eastern and southern Asia
    3. They produce torrential rainfall when they are forced to ascend by mountain barriers
    4. They yield negligible thunderstorms and scant precipitation

    Option: D

  18. What is the main factor that causes the instability of maritime tropical air masses during summer season in Asia?

    Options:
    1. Their convergence with continental polar air masses
    2. Their origin in southern oceans
    3. Their movement north and northeastward
    4. The warm ground surface of the mainland

    Option: D

  19. What is the main difference between maritime polar air masses during winter and summer seasons in Asia?

    Options:
    1. They are more active during summers than during winters
    2. They influence only the coastal margins of Siberia, Manchuria and South Korea during winters
    3. They bring abundant moisture from the sea and cause precipitation during winters
    4. They are associated with clear weather and scant precipitation during summers

    Option: A

  20. Which of the following statements is true about continental polar air masses during winter season in Asia?

    Options:
    1. They bring abundant moisture from the sea and cause precipitation
    2. They enter the Indian subcontinent and affect its weather conditions
    3. They deposit large amounts of sand and dust as loess
    4. They do not enter the Indian subcontinent due to the barrier of the Himalayas

    Option: D