16. Fronts are found in ________ between air masses where temperature and moistu

ID: 159655 • Letter: 1

Question

16. Fronts are found in ________ between air masses where temperature and moisture gradients _________.

a. transition zones, are typically small

b. ridges, do not exist

c. transition zones, are typically large

d. transition zones, are zero

17. In the upper troposphere, directly above a surface high-pressure system, there is usually ________.

a. Convergence

b. Divergence

c. a ridge

d. a trough

18. The area of the United States with the highest annual average number of thunderstorms days is in the state of ________.

a.Texas

b.Oklahoma

c.Iowa

d.California

e.Florida

19. Thunderstorms require ________.

a. an unstable layer of the atmosphere so that vertical motions are enhanced

b. an ample supply of water vapor to provide latent heat of condensation for more buoyancy

c. a lifting mechanism to set off initial vertical motion

d. All of the above are correct.

20. In the dissipating stage of a thunderstorm, the cloud consists mainly of ________.

a. Updrafts

b. Downdrafts

c. circular winds spiraling around

d. both updrafts and downdrafts

16. c

Fronts are found in transition zones between air masses where temperature and moisture gradients are typically large.

17. a

In the upper troposphere, directly above a surface high-pressure system, there is usually Convergence.

18. a

The area of the United States with the highest annual average number of thunderstorms days is in the state of Texas.

19. c

Thunderstorms require a lifting mechanism to set off initial vertical motion.

20. b

In the dissipating stage of a thunderstorm, the cloud consists mainly of Downdrafts.

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