ATC-Weather Exam Questions and
Answers (Latest 2026)
Atmospheric Pressure - Correct Answers ✅A measure of
weight that a column of air exerts on an object
Pressure Variation - Correct Answers ✅Standard
atmospheric values are used as standard scientific
measurements
-At Sea level
-Surface Temperature 15 C/59 F
-Surface Pressure 29.92 inches of mercury/1013.2 millibars
-Weight of atmosphere at sea level 14.7lbs PSI
-All standards (temperature, dew point, pressure) vary
because of altitude.
-Pressure decreases roughly 1 in of Mercury every 1,000 ft
increase in altitude
Types of Barometers - Correct Answers ✅Mercurial
Barometer
Aneroid Barometer-partially evacuated cell expands and
contracts with changes in atmospheric pressure
Altimeter Setting Indicator - Correct Answers ✅ASI-very
accurate
-Precision aneroid barometer
-Primary means of obtaining altimeter settings at terminal
facilities, which is the station pressure.
,ATC-Weather Exam Questions and
Answers (Latest 2026)
-Station Pressure with a correction factor for field elevation
above or below sea level is Altimeter Setting.
Altimeter - Correct Answers ✅Form of aneroid barometer,
which is graduated to read increments of height rather than
units of pressure.
Controller gives altimeter setting for ASI to pilot, pilot inputs
altimeter setting into aircraft altimeter and indicates altitude
above mean sea level.
Altitude - Correct Answers ✅The height measured in feet
Above Ground Level (AGL), or from Mean Sea Level (MSL)
True Altitude - Correct Answers ✅An actual or exact
altitude above mean sea level. Given by ATC
Indicated altitude - Correct Answers ✅An altitude above
MSL indicated on altimeter. Given by instrument
Altimeter Setting - Correct Answers ✅The value to which
the scale of the pressure altimeter is set so the altimeter
indicates true altitude at field elevation
Effect of pressure on altitude - Correct Answers ✅-Failure
to adjust the altimeter as the aircraft files from a high-
pressure area to a low-pressure area; the aircraft is lower
,ATC-Weather Exam Questions and
Answers (Latest 2026)
than aircraft altimeter indicates. (High to low, look out below.
Lower than actual)
-Altimeter must be adjusted frequently to the altimeter
setting reported by the nearest tower or weather station.
-Aircraft flies from low pressure to high pressure, the aircraft
is actually higher than the altimeter indicates. (low to high,
eye to sky; higher than actual)
-A pressure change of one-inch mercury would result in a
1,000 -foot error on the altimeter.
Effects of temperature on altitude - Correct Answers ✅-
Temperature varies with altitude. Normally temperature
decreases with an increase in altitude
-Standard lapse rate is 2 C or 3.3 F per thousand feet.
-Aircraft flying from warm to cold air, the aircraft will be lower
than altimeter indicates.
-Aircraft flying from cold to warm air the aircraft will be higher
than the altimeter indicates.
Pressure Altitude - Correct Answers ✅-The altitude in the
standard atmosphere where the current pressure surrounding
the aircraft is found.
-Pilot sets altimeter at the standard altimeter setting of 29.92
inches; the altimeter indicates pressure altitude
-FAA regulations require aircraft to fly at pressure altitudes at
high levels (18,000 feet and above)
, ATC-Weather Exam Questions and
Answers (Latest 2026)
-Below 18,000 feet, aircraft are required to fly at indicated
altitudes
Density Altitude - Correct Answers ✅-The altitude in the
standard atmosphere where density of the air surrounding
the aircraft is found
-Pressure, temperature, and humidity determine air density
-an index to aircraft performance
High density Altitude - Correct Answers ✅-Hot day, the air
becomes thinner or lighter, and its density is equivalent to a
higher altitude in the standard atmosphere.
-Reduces aircraft performance by reducing power, thrust, and
lift.
-Lengthens takeoff and landing rolls.
-Reduces the rate of climb
Low Density altitude - Correct Answers ✅Increases aircraft
performance.
Wind and Atmospheric Circulation - Correct Answers
✅Convection & Advection
Answers (Latest 2026)
Atmospheric Pressure - Correct Answers ✅A measure of
weight that a column of air exerts on an object
Pressure Variation - Correct Answers ✅Standard
atmospheric values are used as standard scientific
measurements
-At Sea level
-Surface Temperature 15 C/59 F
-Surface Pressure 29.92 inches of mercury/1013.2 millibars
-Weight of atmosphere at sea level 14.7lbs PSI
-All standards (temperature, dew point, pressure) vary
because of altitude.
-Pressure decreases roughly 1 in of Mercury every 1,000 ft
increase in altitude
Types of Barometers - Correct Answers ✅Mercurial
Barometer
Aneroid Barometer-partially evacuated cell expands and
contracts with changes in atmospheric pressure
Altimeter Setting Indicator - Correct Answers ✅ASI-very
accurate
-Precision aneroid barometer
-Primary means of obtaining altimeter settings at terminal
facilities, which is the station pressure.
,ATC-Weather Exam Questions and
Answers (Latest 2026)
-Station Pressure with a correction factor for field elevation
above or below sea level is Altimeter Setting.
Altimeter - Correct Answers ✅Form of aneroid barometer,
which is graduated to read increments of height rather than
units of pressure.
Controller gives altimeter setting for ASI to pilot, pilot inputs
altimeter setting into aircraft altimeter and indicates altitude
above mean sea level.
Altitude - Correct Answers ✅The height measured in feet
Above Ground Level (AGL), or from Mean Sea Level (MSL)
True Altitude - Correct Answers ✅An actual or exact
altitude above mean sea level. Given by ATC
Indicated altitude - Correct Answers ✅An altitude above
MSL indicated on altimeter. Given by instrument
Altimeter Setting - Correct Answers ✅The value to which
the scale of the pressure altimeter is set so the altimeter
indicates true altitude at field elevation
Effect of pressure on altitude - Correct Answers ✅-Failure
to adjust the altimeter as the aircraft files from a high-
pressure area to a low-pressure area; the aircraft is lower
,ATC-Weather Exam Questions and
Answers (Latest 2026)
than aircraft altimeter indicates. (High to low, look out below.
Lower than actual)
-Altimeter must be adjusted frequently to the altimeter
setting reported by the nearest tower or weather station.
-Aircraft flies from low pressure to high pressure, the aircraft
is actually higher than the altimeter indicates. (low to high,
eye to sky; higher than actual)
-A pressure change of one-inch mercury would result in a
1,000 -foot error on the altimeter.
Effects of temperature on altitude - Correct Answers ✅-
Temperature varies with altitude. Normally temperature
decreases with an increase in altitude
-Standard lapse rate is 2 C or 3.3 F per thousand feet.
-Aircraft flying from warm to cold air, the aircraft will be lower
than altimeter indicates.
-Aircraft flying from cold to warm air the aircraft will be higher
than the altimeter indicates.
Pressure Altitude - Correct Answers ✅-The altitude in the
standard atmosphere where the current pressure surrounding
the aircraft is found.
-Pilot sets altimeter at the standard altimeter setting of 29.92
inches; the altimeter indicates pressure altitude
-FAA regulations require aircraft to fly at pressure altitudes at
high levels (18,000 feet and above)
, ATC-Weather Exam Questions and
Answers (Latest 2026)
-Below 18,000 feet, aircraft are required to fly at indicated
altitudes
Density Altitude - Correct Answers ✅-The altitude in the
standard atmosphere where density of the air surrounding
the aircraft is found
-Pressure, temperature, and humidity determine air density
-an index to aircraft performance
High density Altitude - Correct Answers ✅-Hot day, the air
becomes thinner or lighter, and its density is equivalent to a
higher altitude in the standard atmosphere.
-Reduces aircraft performance by reducing power, thrust, and
lift.
-Lengthens takeoff and landing rolls.
-Reduces the rate of climb
Low Density altitude - Correct Answers ✅Increases aircraft
performance.
Wind and Atmospheric Circulation - Correct Answers
✅Convection & Advection
