Certified Tower Operator (CTO) Exam Questions with
Answers
1.The uneven heating of adjacent bodies of air causing warm air to be
drawn upwards, and more dense air downward defines: Convective
Currents
2.Air is deflected to the right in the Northern Hemisphere and to the left in
the Southern Hemisphere due to: The Coriolis Force
3.A narrow, high-speed, meandering band of air moving at high altitude
is called a(n): Jet stream
4.Clear Air Turbulence (CAT) most generally occurs at high altitudes and
in the vicinity of: The jet stream
5.In the Northern Hemisphere, air movement around a low pressure
center flows in a(n) direction: Counterclockwise
6.When a mass of cold air replaces warm air, a front occurs: Cold
7.Behind a fast moving cold front, you can expect skies
with gusty and turbulent winds.: Clearing
8.Warm air slides over a wedge of colder air when a front
pro- gresses forward.: Warm
,9.The three principle types of fronts are cold, warm, and: Stationary
10.The standard pressure at sea level is inches of mercury.: -
29.92
11.An altimeter depicts indicated altitude, which is altitude expressed
as height above: Sea level
12.Two types of barometers used
to measure atmospheric pressure
are
and .: Aneroid, Mercurial
13.Lines drawn on a weather map
around pressure areas to connect the
points of equal pressure are called:
Isobars
14.The decrease of temperature with and increase in height is defined as: -
Lapse rate (Adiabatic)
15.In the troposphere, the lapse rate is approximately: Two degrees
centigrade per one thousand feet
16.An increase in temperature of the atmosphere with an increase of
altitude height defines a(n): Inversion
,17.Pressure, temperature, and humidity are used to determine: Air density
18.The three types of aircraft icing are: Clear, Rime, and Mixed
19.Clear ice is considered dangerous to aircraft in flight because it is:
Difficult to remove
20.When the rate of accumulation is such that deicing/anti-icing
equipment fails to reduce or control the hazard best defines as: Severe
Icing
21.Wind direction is determined by the direction: FROM WHICH the wind
is blowing
22.Wind speed is the average speed given in: Knots
23.Small, dangerous downdrafts of wind extending horizontally 2.5 miles
or less with wind speeds up to 150 knots are known as: Microbursts
24.A change in wind speed and/or direction in a short distance is a:
Windshear
25.Airports equipped with Low Level Wind Shear Alert System (LLWAS)
net- work expansion (LLWAS systems integrated with Terminal Doppler
Weather Radar (TDWR) and TDWR systems) provides the capability of
detecting wind shear alerts and: Microburst activity
26.The weather phenomenon particularly hazardous to aviation is:
, Thunder- storm
27.The initial stage of a thunderstorm is from a cloud.:
Cumu- lus
28.The mature stage of a thunderstorm is reached when: Precipitation begin
29. A violently rotating column of air in contact with the ground and
associated with a thunderstorm is called a: Tornado
30.A squall line is a narrow band of active: Thunderstorms
31.The two greatest thunderstorm hazards to an aircraft are: Hail and
Turbu- lence
32.The most common forms of precipitation which cause restrictions
to visibility are: Rain, Drizzle, Snow
33.Rain rarely reduces surface visibility to less than: One mile
34.One of the most common and persistent weather hazards encountered
in aviation is: Fog
35.The most frequent cause of surface visibility below 3 miles is: Fog
36.Two basic types of cloud formations are: Cumulus and Stratus
37.Clouds formed by vertical currents of unstable air are called:
Cumulus clouds
38.Clouds formed by the cooling of unstable air are called: Stratus clouds
Answers
1.The uneven heating of adjacent bodies of air causing warm air to be
drawn upwards, and more dense air downward defines: Convective
Currents
2.Air is deflected to the right in the Northern Hemisphere and to the left in
the Southern Hemisphere due to: The Coriolis Force
3.A narrow, high-speed, meandering band of air moving at high altitude
is called a(n): Jet stream
4.Clear Air Turbulence (CAT) most generally occurs at high altitudes and
in the vicinity of: The jet stream
5.In the Northern Hemisphere, air movement around a low pressure
center flows in a(n) direction: Counterclockwise
6.When a mass of cold air replaces warm air, a front occurs: Cold
7.Behind a fast moving cold front, you can expect skies
with gusty and turbulent winds.: Clearing
8.Warm air slides over a wedge of colder air when a front
pro- gresses forward.: Warm
,9.The three principle types of fronts are cold, warm, and: Stationary
10.The standard pressure at sea level is inches of mercury.: -
29.92
11.An altimeter depicts indicated altitude, which is altitude expressed
as height above: Sea level
12.Two types of barometers used
to measure atmospheric pressure
are
and .: Aneroid, Mercurial
13.Lines drawn on a weather map
around pressure areas to connect the
points of equal pressure are called:
Isobars
14.The decrease of temperature with and increase in height is defined as: -
Lapse rate (Adiabatic)
15.In the troposphere, the lapse rate is approximately: Two degrees
centigrade per one thousand feet
16.An increase in temperature of the atmosphere with an increase of
altitude height defines a(n): Inversion
,17.Pressure, temperature, and humidity are used to determine: Air density
18.The three types of aircraft icing are: Clear, Rime, and Mixed
19.Clear ice is considered dangerous to aircraft in flight because it is:
Difficult to remove
20.When the rate of accumulation is such that deicing/anti-icing
equipment fails to reduce or control the hazard best defines as: Severe
Icing
21.Wind direction is determined by the direction: FROM WHICH the wind
is blowing
22.Wind speed is the average speed given in: Knots
23.Small, dangerous downdrafts of wind extending horizontally 2.5 miles
or less with wind speeds up to 150 knots are known as: Microbursts
24.A change in wind speed and/or direction in a short distance is a:
Windshear
25.Airports equipped with Low Level Wind Shear Alert System (LLWAS)
net- work expansion (LLWAS systems integrated with Terminal Doppler
Weather Radar (TDWR) and TDWR systems) provides the capability of
detecting wind shear alerts and: Microburst activity
26.The weather phenomenon particularly hazardous to aviation is:
, Thunder- storm
27.The initial stage of a thunderstorm is from a cloud.:
Cumu- lus
28.The mature stage of a thunderstorm is reached when: Precipitation begin
29. A violently rotating column of air in contact with the ground and
associated with a thunderstorm is called a: Tornado
30.A squall line is a narrow band of active: Thunderstorms
31.The two greatest thunderstorm hazards to an aircraft are: Hail and
Turbu- lence
32.The most common forms of precipitation which cause restrictions
to visibility are: Rain, Drizzle, Snow
33.Rain rarely reduces surface visibility to less than: One mile
34.One of the most common and persistent weather hazards encountered
in aviation is: Fog
35.The most frequent cause of surface visibility below 3 miles is: Fog
36.Two basic types of cloud formations are: Cumulus and Stratus
37.Clouds formed by vertical currents of unstable air are called:
Cumulus clouds
38.Clouds formed by the cooling of unstable air are called: Stratus clouds
