WEATHER EXAM QUESTIONS AND ANSWERS
What 2 additional ingredients does natural air have that dry air does not? - Answers
:Water vapor and condensation nuclei
Between the 30° - 60° N latitude is primarily where the U.S is located. What is the
prevailing wind direction? - Answers :Westerly
In which layer of the atmosphere does weather occur? - Answers :Troposphere
What is a cP? - Answers :continental polar
(air mass)
What are the characteristics of a cP? - Answers :cold and dry
Moves from the polar regions in a southeast direction
Explain the difference between convection and advection - Answers :Convection is
vertical transfer and advection is horizontal
In late evening, a thick layer of clouds have moved over your airfield. Will a nocturnal
inversion happen this evening? Why or why not? - Answers :No. The clouds will prevent
an inversion from happening by keeping the warmer air near the surface.
Define sea level pressure in 2 units of measurement - Answers :29.92" Hg and 1013.2
mb
How is change in pressure depicted on a weather chart? - Answers :Isobars
(which are drawn 4 mb apart)
You're on a true course fo 010° and the wind is from 280°. What type of weather
conditions should you expect? - Answers :Moving toward low pressure, lifting air,
vertical clouds, turbulence and possible storms
You're departing Denver with an altimeter setting of 30.22. You arrive at New Orleans
with an altimeter setting of 30.00. You failed to reset your altimeter. Is your true altitude
higher or lower than indicated? - Answers :Lower
What kind of cloud would you expect at low altitude in an unstable environment? -
Answers :Cumuliform clouds
What kind of cloud would you expect at low altitude in a stable environment? - Answers
:Stratiform clouds
Describe the formation of advection fog - Answers :Prevailing wind blowing from a large
body of water over a colder land surface
, During stagefield training and frontal passage, what would you expect to happen to wind
direction and speed? - Answers :An approximate 90° shift in wind direction and wind
speed based upon current pressure gradient force
What happens as warm air is lifted over a cold air mass? - Answers :It lifts, cools with
altitude, condenses, creates clouds, and "makes weather"
Over the past several hours the altimeters setting at KOZR has been decreasing. After
listening to ATIS, you notice the setting has increased, the wind is now blowing from the
NW, and the OAT is showing a lower temp. What has happened? - Answers :A cold
front has passed
The cold front is moving faster than previously forecast. What type of weather would
you expect ahead of the front? - Answers :Squall line formation
The entire local flying area is covered in ST, NS, and AS clouds. What type of front is
occurring? - Answers :Stable warm front
You are approaching the clouds in the following order: CS, AS, and NS. What changes
in ceiling, vis and chance of precipitation can you expect? - Answers :Ceiling and vis
decreasing
Chance of precipitation increasing
Dry air consists of percentages of what three ingredients? 78%:
___________________; 21%: ________________________; 1%;
___________________ - Answers :Nitrogen; oxygen; rare gases
In addition to the gases present in dry air, natural air contains a variable amount of
_____________ _________________ and ____________________
_____________________, - Answers :water vapor, condensation nuclei
The most important element of weather, usually not found above the troposphere, is
___________________________________. - Answers :moisture
Atmospheric circulation occurs in a three-cell pattern because of uneven heating of the
Earth's surface, the 23.5° tilt of the Earth, and
_____________________________________________. - Answers :Coriolis Force
The prevailing wind direction between the 30° and 60° latitudes moves FROM which
direction?
(Wind is ALWAYS reported from a direction, regardless of how the question is worded.)
North, East, South or West? - Answers :West
Which of the following would be a source region for a warm, moist air mass?
a. North Pacific Ocean
b. Northern Mexico
What 2 additional ingredients does natural air have that dry air does not? - Answers
:Water vapor and condensation nuclei
Between the 30° - 60° N latitude is primarily where the U.S is located. What is the
prevailing wind direction? - Answers :Westerly
In which layer of the atmosphere does weather occur? - Answers :Troposphere
What is a cP? - Answers :continental polar
(air mass)
What are the characteristics of a cP? - Answers :cold and dry
Moves from the polar regions in a southeast direction
Explain the difference between convection and advection - Answers :Convection is
vertical transfer and advection is horizontal
In late evening, a thick layer of clouds have moved over your airfield. Will a nocturnal
inversion happen this evening? Why or why not? - Answers :No. The clouds will prevent
an inversion from happening by keeping the warmer air near the surface.
Define sea level pressure in 2 units of measurement - Answers :29.92" Hg and 1013.2
mb
How is change in pressure depicted on a weather chart? - Answers :Isobars
(which are drawn 4 mb apart)
You're on a true course fo 010° and the wind is from 280°. What type of weather
conditions should you expect? - Answers :Moving toward low pressure, lifting air,
vertical clouds, turbulence and possible storms
You're departing Denver with an altimeter setting of 30.22. You arrive at New Orleans
with an altimeter setting of 30.00. You failed to reset your altimeter. Is your true altitude
higher or lower than indicated? - Answers :Lower
What kind of cloud would you expect at low altitude in an unstable environment? -
Answers :Cumuliform clouds
What kind of cloud would you expect at low altitude in a stable environment? - Answers
:Stratiform clouds
Describe the formation of advection fog - Answers :Prevailing wind blowing from a large
body of water over a colder land surface
, During stagefield training and frontal passage, what would you expect to happen to wind
direction and speed? - Answers :An approximate 90° shift in wind direction and wind
speed based upon current pressure gradient force
What happens as warm air is lifted over a cold air mass? - Answers :It lifts, cools with
altitude, condenses, creates clouds, and "makes weather"
Over the past several hours the altimeters setting at KOZR has been decreasing. After
listening to ATIS, you notice the setting has increased, the wind is now blowing from the
NW, and the OAT is showing a lower temp. What has happened? - Answers :A cold
front has passed
The cold front is moving faster than previously forecast. What type of weather would
you expect ahead of the front? - Answers :Squall line formation
The entire local flying area is covered in ST, NS, and AS clouds. What type of front is
occurring? - Answers :Stable warm front
You are approaching the clouds in the following order: CS, AS, and NS. What changes
in ceiling, vis and chance of precipitation can you expect? - Answers :Ceiling and vis
decreasing
Chance of precipitation increasing
Dry air consists of percentages of what three ingredients? 78%:
___________________; 21%: ________________________; 1%;
___________________ - Answers :Nitrogen; oxygen; rare gases
In addition to the gases present in dry air, natural air contains a variable amount of
_____________ _________________ and ____________________
_____________________, - Answers :water vapor, condensation nuclei
The most important element of weather, usually not found above the troposphere, is
___________________________________. - Answers :moisture
Atmospheric circulation occurs in a three-cell pattern because of uneven heating of the
Earth's surface, the 23.5° tilt of the Earth, and
_____________________________________________. - Answers :Coriolis Force
The prevailing wind direction between the 30° and 60° latitudes moves FROM which
direction?
(Wind is ALWAYS reported from a direction, regardless of how the question is worded.)
North, East, South or West? - Answers :West
Which of the following would be a source region for a warm, moist air mass?
a. North Pacific Ocean
b. Northern Mexico
