Ch 8: Air Masses And Cyclonic Weather Systems

20 Questions | Total Attempts: 206

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Weather Quizzes & Trivia

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Questions and Answers
  • 1. 
    Fronts are associated with clouds because
    • A. 

      Friction along the front heats the air and makes clouds.

    • B. 

      The cold air of the cold front can't hold as much moisture, so it becomes cloud banks.

    • C. 

      The warm air is stable and cooled by radiation escaping to space.

    • D. 

      When air moves it becomes opaque.

    • E. 

      The warm air rises and cools adiabatically over the cooler air.

  • 2. 
    The air mass that originates over the Gulf of Mexico is the 
    • A. 

      CP

    • B. 

      CT

    • C. 

      MP

    • D. 

      MT

    • E. 

      CA

  • 3. 
    Seen from above, the surface air circulation associated with a Northern Hemisphere midlatitude cyclone is
    • A. 

      Counterclockwise because of its high pressure.

    • B. 

      From north to south because they originate at the polar front.

    • C. 

      Clockwise because of its low pressure.

    • D. 

      Clockwise because of its high pressure.

    • E. 

      Counterclockwise because of its low pressure.

  • 4. 
    Regardless warm or cold fronts, clouds form when warm air rises above the cold air.
    • A. 

      True

    • B. 

      False

  • 5. 
    During the open stage of a midlatitude cyclone,
    • A. 

      Clouds are absent along the warm front.

    • B. 

      Precipitation is unlikely.

    • C. 

      The warm front is moving faster than the cold front.

    • D. 

      Occlusion is occurring.

    • E. 

      The warm and cold fronts are fully separated.

  • 6. 
    Which of the following indicate a warm front on a weather map?
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

  • 7. 
    Precipitation usually ends with the passage of the cold front. 
    • A. 

      True

    • B. 

      False

  • 8. 
    The air mass that mostly influences the weather of the Pacific Northwest including Washington and Oregon is the 
    • A. 

      MT

    • B. 

      CT

    • C. 

      CA

    • D. 

      CP

    • E. 

      MP

  • 9. 
    The number and severity of tornadoes in the United States are predominantly a function of the:
    • A. 

      Large number of mobile homes.

    • B. 

      Rain shadow effect from the Rocky Mountains.

    • C. 

      Influence of the Gulf Stream.

    • D. 

      The urban heat islands.

    • E. 

      Ready interaction of the mT and CP air masses.

  • 10. 
    The coldest air masses are the 
    • A. 

      MP

    • B. 

      CT

    • C. 

      ME

    • D. 

      CA

    • E. 

      MT

  • 11. 
    In the United States, with the passage of a typical warm front
    • A. 

      A day of slow but steady precipitation ends.

    • B. 

      Temperatures drop.

    • C. 

      Clouds begin to get lower and thicker.

    • D. 

      The winds will flow from the north.

    • E. 

      The air mass will always be a cP.

  • 12. 
    The passage of a warm front means the temperatures will rise
    • A. 

      True

    • B. 

      False

  • 13. 
    Based on the map, which is a cT air mass?
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

    • E. 

      5

  • 14. 
    The center of Tornado Alley is 
    • A. 

      California and Nevada

    • B. 

      Mississippi and Alabama

    • C. 

      Oklahoma and Kansas

    • D. 

      Kentucky and West Virginia

    • E. 

      Kentucky and Tennessee

  • 15. 
    Midlatitude cyclones in the United States generally
    • A. 

      Move from west to east.

    • B. 

      Move from east to west.

    • C. 

      Move from north to south.

    • D. 

      Move from south to north.

    • E. 

      Remain stationary.

  • 16. 
    The interaction of mT and cP air along the polar front frequently occurs during a
    • A. 

      Occlusion front.

    • B. 

      Cold front.

    • C. 

      Warm front.

    • D. 

      Cold air inversion

    • E. 

      Midlatitude cyclone

  • 17. 
    Select all of the following statements that are characteristics of tornadoes.
    • A. 

      Tornadoes are measured on the Enhanced Fujita scale.

    • B. 

      When the tornado becomes clogged with the air it takes in, the funnel strengthens.

    • C. 

      Tornadoes can be on the ground for hundreds of kilometers and last for several hours.

    • D. 

      Tornadoes are classified on a scale from 0 to 6.

    • E. 

      The average duration of a tornado is about 15 minutes.

  • 18. 
    A boundary where contrasting air masses meet is a(n)
    • A. 

      Storm surge

    • B. 

      Hurricane

    • C. 

      Eye wall

    • D. 

      Squall line

    • E. 

      Front.

  • 19. 
    The following before and after images document damage most likely caused by which type of storm. 
    • A. 

      Thunderstorm

    • B. 

      Typhoon

    • C. 

      Tropic storm

    • D. 

      Hurricane

    • E. 

      Tornado

  • 20. 
    Select three of the following statements that are true about air masses.
    • A. 

      An air mass that moves from the northern Pacific Ocean to northern Canada, where it stagnates for a couple of weeks in January, will tend to warm up because the land is still warm relative to the lower atmosphere.

    • B. 

      Air masses are named by their temperature and humidity characteristics.

    • C. 

      Air masses are named by their height and appearance.

    • D. 

      An air mass is any large body of the lower atmosphere that has fairly uniform conditions of temperature and moisture.

    • E. 

      An air mass derives its characteristics from a source region.