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CTO PREP ALL SECTIONS
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CTO PREP ALL SECTIONS
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CTO PREP ALL SECTIONSThe uneven heating of adjacent bodies of air causing warm air to be drawn upward, and
more dense air downward
defines______________________________________________. - ANS-CONVECTIVE
CURRENTS
Air is deflected to the right in the Northern Hemisphere and to the left in the Southern
Hemisphere due to the ________________________________. - ANS-CORIOLIS
FORCE
A narrow, high-speed, meandering band of air moving at a high altitude is called the
__________. - ANS-JET STREAM
Clear Air Turbulence (CAT) most generally occurs at high altitudes and in the vicinity of
______________________. - ANS-THE JET STREAM
In the Northern Hemisphere, air movement around a low pressure center flows in a(n)
________________________________________direction. -
ANS-COUNTERCLOCKWISE
When a mass of cold air replaces warm air, a ____________ front occurs. - ANS-COLD
Cold fronts typically move __________ than warm fronts. - ANS-FASTER
Warm air slides over a wedge of colder air when a _______ front progresses forward. -
ANS-WARM
The three principle types of fronts are cold, warm, and _______________________. -
ANS-STATIONARY
The standard pressure at sea level is ____________ inches of mercury. - ANS-29.92
An altimeter depicts indicated altitude, which is altitude expressed as height above
Mean ______________________________. - ANS-SEA LEVEL
Lines drawn on a weather map around pressure areas to connect points of equal
pressure are called_____________________________. - ANS-ISOBARS
,The decrease of temperature with an increase in height is defined as ____________. -
ANS-LAPSE RATE
In the troposphere, the lapse rate is approximately ______ ⁰F per one thousand feet. -
ANS-3.57
An increase in temperature of the atmosphere with an increase of altitude height defines
a(n) __________________________. - ANS-INVERSION
The three types of aircraft icing are ____________, ____________, and
______________. - ANS-CLEAR, RIME, MIXTURE OF THE TWO
Clear ice is considered hazardous for many reasons. One reason is, because it is
________________. - ANS-DIFFICULT TO REMOVE
When the rate of accumulation is such that deicing/anti-icing equipment fails to reduce
or control the hazard best defines ____________________ icing. - ANS-SEVERE
Wind direction is determined by the direction ______________ the wind is blowing. -
ANS-FROM WHICH
Wind speed is the average speed given in ______________. - ANS-KNOTS
A very small downward gust of air (2.5 miles or less in diameter) is called a
_______________. - ANS-MICROBURST
A change in wind speed and/or wind direction in a short distance resulting in a tearing or
shearing effect. It can exist in a horizontal or vertical direction and occasionally in both
is called _______________. - ANS-WIND SHEAR
Airports equipped with Low Level Wind Shear Alert System (LLWAS), Terminal Doppler
Weather Radar (TDWR), Weather System Processor (WSP), and Integrated Terminal
Weather System (ITWS) display information on wind shear alerts and
________________________. - ANS-MICROBURSTS ACTIVITY AIM
The weather phenomenon that can pack just about every aviation weather hazard into
one vicious bundle is a ___________________. - ANS-THUNDERSTORM
The initial (Towering Cumulus or Cumulus) stage of a thunderstorm begins from a
_________________ cloud. - ANS-TOWERING CUMULUS or CUMULUS
,The mature stage of a thunderstorm is reached when ________________ begins. -
ANS-PRECIPITATION
A violently rotating column of air in contact with the ground and associated with a
thunderstorm is called a ________________. - ANS-TORNADO
Thunderstorms that form a line extending laterally for hundreds of miles is called a
_________________. - ANS-SQUALL LINE
The two greatest thunderstorm hazards to an aircraft are _________________ and
_________. - ANS-HAIL, TURBULENCE
Rain seldom reduces surface visibility to less than _________________. - ANS-1 MILE
The four basic types of cloud formations are _________________,
__________________, __________________ and ________________. -
ANS-CIRRIFORM, NIMBUS, CUMULIFORM, STRATIFORM
Station identifiers for all weather reporting stations in the contiguous United States will
begin with the letter ___. - ANS-K
"Broken" sky cover means that ___ through ___ of the sky is obscured by clouds. -
ANS-5/8, 7/8
In METAR report, the height of the base of each cloud layer is reported in
________________of feet Above Ground Level (AGL). - ANS-HUNDREDS
The METAR entry "SCT020 BKN250" is decoded as
______________________________________________________________________
______________________________________________________________________
___________________________. - ANS-TWO THOUSAND SCATTERED, CEILING
TWO FIVE THOUSAND BROKEN
The METAR entry "FEW025TCU SCT040" is decoded as
______________________________________________________________________
_____________________________. - ANS-FEW CLOUDS AT TWO THOUSAND FIVE
HUNDRED, TOWERING CUMULUS, FOUR THOUSAND SCATTERED
, "CIG 005V008" in the remarks section of a METAR
indicates_______________________________________________________________
_____________________________________. - ANS-CEILING VARIABLE BETWEEN
FIVE HUNDRED AND EIGHT HUNDRED
"+TSRAGR" encoded in a METAR indicates a
______________________________________________________________________
________________________________. - ANS-THUNDERSTORM, HEAVY RAIN,
HAIL
In a METAR report, the altimeter element follows the
___________________________________ group. - ANS-TEMPERATURE/DEWPOIN
The greatest distance that can be seen throughout at least half of the horizon circle
describes _____________________visibility. - ANS-PREVAILING
Tower personnel shall take prevailing visibility observations when prevailing visibility at
the usual point of observation or at tower level is less than ______________ mile(s). -
ANS-4
In a METAR report, temperature and dew point are shown in whole degrees
____________. - ANS-CELSIUS
Surface temperature and dew point spread is important in anticipating _________. -
ANS-FOG
An Aviation Routine Weather Report taken when a wind shift occurs is called a
_______________ observation. - ANS-SPECIAL/SPECI
An Aviation Routine Weather Report taken after an aircraft mishap is called a
__________________ observation. - ANS-SPECIAL/SPECI
Weather advisories issued to amend an area forecast regarding weather phenomena
that are of operational interest to all aircraft and potentially hazardous to aircraft are
classified as ___________. - ANS-AIRMET
Advisories for existing and forecast weather involving tornadoes and/or embedded
thunderstorms are classified as _______________________. - ANS-CONVECTIVE
SIGMETS
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