GEOG 3033, Test 11
On a weather map, the transition zone between two air masses with sharply contrasting properties is marked by
A front
A front is the transition zone between two air masses of different
Densities
Along a dryline, the ____ may drop markedly
Dew point temperatures
Lake-effect snows are snowstorms that form on the ____ side of a large lake
Downwind
A true cold front on a weather map is always
Followed by cooler air
A good source region for an air mass would be
Generally flat areas of uniform composition with light surface winds
Which of the following statements is most plausible?
In winter, cA source regions have lower temperatures than cP source regions
Lake-effect snows are best developed around the Great Lakes during
Late fall and early winter when cold, dry polar air moves over the relatively warm water
During the spring, on a warm, sunny day in Boston, Massachusetts, the wind shifts from southwesterly to northeasterly and the weather turns cold, damp, and overcast. This suggests that a "back door" cold front approached Boston from the:
Northeast
Wintertime mP air masses are less common along the Atlantic coast of North America than along the Pacific coast mainly because the
Prevailing winds are often westerly
Along the boundary between continental polar and maritime tropical air masses, widespread precipitation and storminess is often found
True
Continental arctic and continental polar air masses can be difficult to distinguish, especially when the arctic air mass has traveled over warmer terrain
True
Drylines may be detected by Doppler radar when insects and insect-eating birds congregate along it. On the radar screen, the echo from insects and birds shows up as a thin line, called a fine line
True
What type of air mass would be responsible for persistent cold, damp weather with drizzle along the east coast of North America?
mP
During the spring, which air mass would most likely bring record-breaking high temperatures to the eastern half of the United States?
mT
