Question 1

Choose All That Apply: Which of the following are examples of mesoscale circulations?

1. Thunderstorms
2. Katabatic flow
3. Dust devils
4. Jet streams

Question 2

Multiple Choice: Which type of circulation can lead to ascending air in areas of mountainous terrain and the subsequent formation of afternoon showers and thunderstorms?

1. Chinook winds
2. Katabatic flow
3. Anabatic flow
4. Foehn winds

Question 3

Multiple Choice: What conditions are most favorable for the development of a haboob?

1. Clear skies and calm winds
2. Strong updrafts of moist air into a developing thunderstorm
3. The presence of thunderstorms in mountainous terrain
4. Cold thunderstorm downdrafts that result from the evaporation of falling precipitation

Question 4

Choose All That Apply: Which of the following are characteristics of a monsoon?

1. A wind circulation that features a pronounced seasonal reversal in wind direction
2. A surface high pressure develops over land during the summer, leading to wet conditions
3. A surface low pressure develops over land during the summer, leading to wet conditions
4. A surface low pressure develops over land during the winter, leading to dry conditions

Question 5

Multiple Choice:  ________ is associated with above-normal sea-surface temperatures in the equatorial East Pacific, whereas _________ is associated with below-normal sea-surface temperatures in the equatorial East Pacific.

1. An El Niño ; a La Niña
2. A La Niña ; an El Niño
3. The North American monsoon; a La Niña
4. An El Niño; the North American monsoon

Question 6

Multiple Choice: The single-cell and three-cell models of the Earth’s general circulation develop to accomplish what primary purpose?

1. Increase the temperature difference between the poles and equator
2. Decrease the temperature difference between the poles and equator
3. Increase the amount of precipitation at midlatitudes
4. Decrease the amount of precipitation at midlatitudes

Question 7

Multiple Choice: What is the primary reason the single-cell model differs from the three-cell model of the Earth’s general circulation?

1. The Earth is covered entirely with land in the three-cell model
2. The Earth does not receive solar radiation from the sun in the single-cell model
3. The Earth is not allowed to rotate in the single-cell model
4. The poles are not covered with ice in the single-cell model

Question 8

Multiple Choice: The single-cell model for Earth’s general circulation features a surface ___________ at ____________ and a surface ___________ at ____________.

1. high pressure ; the equator ; low pressure ; the poles
2. low pressure ; the equator ; high pressure ; the poles
3. low pressure ; the equator; high pressure ; 30 degrees latitude
4. high pressure ; the equator ; low pressure ; 30 degrees latitude

Question 9

Multiple Choice: Which of the following factors explains the presence of easterly trade winds near the equator in the three-cell model?

1. The Coriolis force deflects the low-level branch of the Hadley cell towards the east
2. The Coriolis force deflects the low-level branch of the Hadley cell towards the west
3. The Coriolis force deflects the upper-level branch of the Hadley cell towards the east
4. The Coriolis force deflects the upper-level branch of the Hadley cell towards the west.

Question 10

Choose All That Apply: Which of the following circulation cells do not represent reality on Earth?

1. Hadley cell
2. Ferrel cell
3. Polar cell
4. Single-cell

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