Arctic air masses
A) have about the same temperature characteristics as cP air masses.
B) are typically several kilometers thick.
C) frequently blanket much of the eastern United States in winter.
D) produce little precipitation.
E) do not affect North America.
Question 2Continental polar air masses are
A) very cold.
B) humid.
C) unstable.
D) stationary.
E) all of the above
Question 3This North American air mass category forms over high latitude regions of Canada
A) A.
B) mP.
C) mT.
D) cT.
E) cP.
Question 4Continental polar air masses that affect North America
A) usually form over the United States.
B) provide the moisture for much of the precipitation of the eastern United States.
C) are typically unstable.
D) always form over snow-covered regions.
E) none of the above
Question 5Maritime polar air masses that affect North America
A) often come from the North Pacific.
B) are the source of most precipitation in the Southeast.
C) usually flow down from northern Canada.
D) originate in the Gulf of Mexico or the Caribbean.
E) rarely result in precipitation.
Question 6Compared to a polar air mass, a tropical air mass is typically
A) cooler.
B) dryer.
C) less stable.
D) farther from the equator.
E) all of the above
Question 7Air masses
A) are humid.
B) typically form over heterogeneous surfaces.
C) typically move away from the source region after they have formed.
D) often form over medium-sized lakes.
E) have large horizontal temperature gradients.
Quick Reply
