Weather Theory QZ3

Question 1

What is meant by the term “dewpoint”?
1. The temperature at which dew will always form
2. The temperature at which condensation and evaporation are equal
3. The temperature to which air must be cooled to become saturated

Answer 1

3. The temperature to which air must be cooled to become saturated

Question 2

What cloud types would indicate convective turbulence?
1. Towering cumulus clouds
2. Cirrus clouds
3. Nimbostratus clouds

Answer 2

1. Towering cumulus clouds

Question 3

Clouds, fog, or dew will always form when
1. relative humidity reaches 100 percent
2. water vapor condenses
3. water vapor is present

Answer 3

2. water vapor condenses

Question 4

What are the processes by which moisture is added to unsaturated air?
1. Supersaturation and evaporation
2. Heating and condensation
3. Evaporation and sublimation

Answer 4

3. Evaporation and sublimation

Question 5

What types of fog depend upon wind in order to exist?
1. Radiation fog and ice fog
2. Advection fog and upslope fog
3. Steam fog and ground fog

Answer 5

2. Advection fog and upslope fog

Question 6

The conditions necessary for the formation of cumulonimbus clouds are a lifting action and
1. either stable or unstable air
2. unstable air containing an excess of condensation nuclei
3. unstable, moist air

Answer 6

3. unstable, moist air

Question 7

The suffix “nimbus,” used in naming clouds, means
1. a cloud with extensive vertical development
2. a rain cloud
3. a middle cloud containing ice pellets

Answer 7

2. a rain cloud

Question 8

Clouds are divided into four families according to their
1. height range
2. outward shape
3. composition

Answer 8

1. height range

Question 9

The amount of water vapor which air can hold depends on the
1. stability of the air.
2. dewpoint.
3. air temperature.

Answer 9

3. air temperature.

Question 10

What situation is most conducive to the formation of radiation fog?
1. Moist, tropical air moving over cold, offshore water
2. The movement of cold air over much warmer water
3. Warm, moist air over low, flatland areas on clear, calm nights

Answer 10

3. Warm, moist air over low, flatland areas on clear, calm nights

Question 11

Which conditions result in the formation of frost?
1. The temperature of the surrounding air is at or below freezing when small drops of moisture fall on the collecting surface
2. The temperature of the collecting surface is at or below freezing when small droplets of moisture fall on the surface
3. The temperature of the collecting surface is at or below the dewpoint of the adjacent air and the dewpoint is below freezing

Answer 11

3. The temperature of the collecting surface is at or below the dewpoint of the adjacent air and the dewpoint is below freezing

Question 12

In which situation is advection fog most likely to form?
1. A warm, moist air mass on the windward side of mountains
2. A light breeze blowing colder air out to sea
3. An air mass moving inland from the coast in winter

Answer 12

3. An air mass moving inland from the coast in winter

Question 13

Low-level turbulence can occur and icing can become hazardous in which type of fog?
1. Rain-induced fog
2. Upslope fog
3. Steam fog

Answer 13

3. Steam fog

Question 14

What clouds have the greatest turbulence?
1. Cumulonimbus
2. Nimbostratus
3. Towering cumulus

Answer 14

1. Cumulonimbus