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| 1 . |
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An air mass is best defined as _______.
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| 2 . |
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Air masses are defined on the basis of whether they form over tropical or polar regions and whether they form ________.
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| 3 . |
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The dew point is likely to be highest in a __________ air mass.
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| 4 . |
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A front is best defined as ________.
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| 5 . |
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If you observe short, intense, scattered rainfall as a front passes, you are probably experiencing ________.
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| 6 . |
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Steady, light, long-lived precipitation is most commonly associated with _______.
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| 7 . |
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The areas where air masses form are called __________.
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| 8 . |
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Air masses that form over large, high-latitude land masses with very low temperatures are known as ________ air masses.
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| 9 . |
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The coldest of all air masses is the _______ air mass.
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| 10 . |
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The circulation of air around mid-latitude cyclones after they pass over the U.S. east coast results in ________ that can bring cold winds and heavy snowfall.
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| 11 . |
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Extremely hot, dry, and often cloud-free air masses that form during the summer over hot, low-latitude areas
are called ________ air masses.
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| 12 . |
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Air masses that develop over warm
tropical waters and are warm, moist, and unstable near the surface are known as _______ air masses.
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| 13 . |
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Fronts that appear at the surface as the boundary between two polar air masses, with a colder polar air mass usually advancing on a slightly warmer air mass, are called _______ fronts.
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| 14 . |
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As a cold front advances on a warm front, convergence ahead of the front and the uplift of the warm air can lead to the development of _______ clouds.
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| 15 . |
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Warm air flowing upward along the boundary between a warm and cold front, leading to extensive cloud cover, is referred to as _______.
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| 16 . |
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The most complex type of front which involves the cutting off of a warm
air mass from the surface by the meeting of two fronts is the _______.
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| 17 . |
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Drylines are best described as boundaries separating _______.
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| 18 . |
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An air mass approaching Washington and Oregon from the northwest in winter is probably a _________ air mass.
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| 19 . |
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Warm, humid air flowing into Florida is likely due to a ________ air mass.
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| 20 . |
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Air masses that originate over Mexico during the summer are called ______ air masses.
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Answer choices in this exercise are randomized and will appear in a different order each time the page is loaded.
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