ATC Weather Test Questions
Microburst - ✔️✔ Correct Answer A highly localized, high-speed
downburst of air, existing for short periods during the life of the
thunderstorm. Typically less than one mile in diameter, can extend to
approximately 2.5 miles in diameter.
Rain rarely reduces ______ visibility. - ✔️✔ Correct
Answer Surface.
Freezing precipitation _____ reduces the pilot's vision. - ✔️✔
Correct Answer Sharply.
Air Masses - ✔️✔ Correct Answer Any huge body of air whose
physical properties (temperature and moisture) are horizontally
uniform level for level.
Formation of air masses - ✔️✔ Correct Answer Formed when a
large body of air assumes all properties of temperature and moisture
,while resting over its "source region." Best source regions are the
large snow and ice covered polar regions, cold northern oceans,
tropical oceans, and large desert areas.
Unstable air in air masses - ✔️✔ Correct Answer Cumuliform
clouds, showery precipitation, rough air (turbulence), good visibility
(except during precipitation).
Stable air in air masses - ✔️✔ Correct Answer Stratiform clouds
and fog, continuous precipitation, smooth air, fair to poor visibility.
General motion of air masses in the U.S. is... - ✔️✔ Correct
Answer West to East.
Air masses generally move how many miles a day? - ✔️✔ Correct
Answer 500 - 700.
Cold air masses move more rapidly than warm due to... - ✔️✔
Correct Answer The weight of the atmosphere.
,Fronts - ✔️✔ Correct Answer Defined as a boundary or line of
discontinuity separating two different air masses.
Cold Front - ✔️✔ Correct Answer Occurs when cold air replaces
a region occupied by relatively warmer air. Cold air wedges under
warm air, pushing it up. Temperature and humidity decrease,
pressure decreases with approach of front and increases after
passage, wind shifts clockwise.
Slow moving cold front - ✔️✔ Correct Answer Moves an
average speed of 15 knots.
Fast moving cold front - ✔️✔ Correct Answer Moves an average
speed of 25 to 30 knots.
Warm Front - ✔️✔ Correct Answer Average speed is 10 knots,
wind shifts clockwise (from south east to southwest), Precipitation as
much as 300 miles in advance, fog is commonly ahead of a warm
front.
, Atmospheric Pressure - ✔️✔ Correct Answer The force exerted
by the atmosphere at a given point.
(At sea level) Surface temperature? - ✔️✔ Correct Answer 15
Degrees C/59 Degrees F
(At sea level) Surface pressure? - ✔️✔ Correct Answer 29.92
inches of mercury
Weight of atmosphere at sea level... - ✔️✔ Correct Answer 14.7
pounds per square inch
Pressure decreases roughly how much of mercury for each 1,000 feet
increase in altitude? - ✔️✔ Correct Answer One inch
Aneroid Barometer - ✔️✔ Correct Answer Less accurate than
the mercurial barometer.
Altimeter Settings Indicator (ASI) - ✔️✔ Correct Answer Primary
means of obtaining altimeter settings at terminal facilities, DASI is
Digital.
Microburst - ✔️✔ Correct Answer A highly localized, high-speed
downburst of air, existing for short periods during the life of the
thunderstorm. Typically less than one mile in diameter, can extend to
approximately 2.5 miles in diameter.
Rain rarely reduces ______ visibility. - ✔️✔ Correct
Answer Surface.
Freezing precipitation _____ reduces the pilot's vision. - ✔️✔
Correct Answer Sharply.
Air Masses - ✔️✔ Correct Answer Any huge body of air whose
physical properties (temperature and moisture) are horizontally
uniform level for level.
Formation of air masses - ✔️✔ Correct Answer Formed when a
large body of air assumes all properties of temperature and moisture
,while resting over its "source region." Best source regions are the
large snow and ice covered polar regions, cold northern oceans,
tropical oceans, and large desert areas.
Unstable air in air masses - ✔️✔ Correct Answer Cumuliform
clouds, showery precipitation, rough air (turbulence), good visibility
(except during precipitation).
Stable air in air masses - ✔️✔ Correct Answer Stratiform clouds
and fog, continuous precipitation, smooth air, fair to poor visibility.
General motion of air masses in the U.S. is... - ✔️✔ Correct
Answer West to East.
Air masses generally move how many miles a day? - ✔️✔ Correct
Answer 500 - 700.
Cold air masses move more rapidly than warm due to... - ✔️✔
Correct Answer The weight of the atmosphere.
,Fronts - ✔️✔ Correct Answer Defined as a boundary or line of
discontinuity separating two different air masses.
Cold Front - ✔️✔ Correct Answer Occurs when cold air replaces
a region occupied by relatively warmer air. Cold air wedges under
warm air, pushing it up. Temperature and humidity decrease,
pressure decreases with approach of front and increases after
passage, wind shifts clockwise.
Slow moving cold front - ✔️✔ Correct Answer Moves an
average speed of 15 knots.
Fast moving cold front - ✔️✔ Correct Answer Moves an average
speed of 25 to 30 knots.
Warm Front - ✔️✔ Correct Answer Average speed is 10 knots,
wind shifts clockwise (from south east to southwest), Precipitation as
much as 300 miles in advance, fog is commonly ahead of a warm
front.
, Atmospheric Pressure - ✔️✔ Correct Answer The force exerted
by the atmosphere at a given point.
(At sea level) Surface temperature? - ✔️✔ Correct Answer 15
Degrees C/59 Degrees F
(At sea level) Surface pressure? - ✔️✔ Correct Answer 29.92
inches of mercury
Weight of atmosphere at sea level... - ✔️✔ Correct Answer 14.7
pounds per square inch
Pressure decreases roughly how much of mercury for each 1,000 feet
increase in altitude? - ✔️✔ Correct Answer One inch
Aneroid Barometer - ✔️✔ Correct Answer Less accurate than
the mercurial barometer.
Altimeter Settings Indicator (ASI) - ✔️✔ Correct Answer Primary
means of obtaining altimeter settings at terminal facilities, DASI is
Digital.
