Quiz
examen 2
Perguntas do quiz (90)
1A jet stream is defined as wind of
- A30 knots or greater.
- B40 knots or greater.
- C50 knots or greater.
2The primary cause of all changes in the Earth’s weather is
- AVariation of solar energy received by the Earth’s regions.
- BChanges in air pressure over the Earth’s surface.
- CMovement of the air masses.
3If the air temperature is +8oC at an elevation of 1.350 feet and a standard (average) temperature lapse rate exists, what will be the approximate freezing level?
- A3.350 feet MSL.
- B5.350 feet MSL.
- C9.350 feet MSL.
4A common type of ground or surface based temperature inversion is that which is produced by
- AWarm air being lifted rapidly aloft in the vicinity of mountainous terrain.
- BThe movement of colder air over warm air, or the movement f warm air under cold air.
- CGround radiation on clear, cool nights when the wind is light.
5What feature is associated with temperature inversion?
- AA stable layer of air.
- BAn unstable layer of air.
- CAir mass thunderstorms.
6Which weather conditions should be expected beneath a low-level temperature inversion layer when the relative humidity is high?
- ASmooth air and poor visibility due to fog, haze, r low clouds.
- BLight wind shear and poor visibility due t haze and light rain.
- CTurbulence air and poor visibility due to fog, low stratus-type clouds, and showery precipitation.
7Which force, in the Northern Hemisphere, acts at a right angle to the wind and deflects it to the right until parallel to the isobars?
- ACentrifugal.
- BPressure gradient.
- CCoriolis.
8Clouds, fog, or dew will always form when
- AWater vapor condenses.
- BWater vapor is present.
- CThe temperature and dew point are equal.
9To which meteorological condition does the term “dew point” refer?
- AThe temperature to which air must be cooled to become saturated.
- BThe temperature at which condensation and evaporation are equal.
- CThe temperature at which dew will always form.
10The amount of water vapor which air can hold largely depends on
- ARelative humidity.
- BAir temperature.
- CStability of air.
11What enhances the growth rate of precipitation?
- AAdvective action.
- BUpward currents
- CCyclonic movement.
12The formation of either predominantly stratiform or predominantly cumuliform clouds is dependent upon the
- ASource of lift
- BStability of air being lifted
- CTemperature of the air being lifted
13Stability can be determined from which measurement of the atmosphere?
- ALow-level winds.
- BAmbient lapse rate.
- CAtmospheric pressure.
14What determines the structure or type of clouds which form as a result of air being forced to ascend?
- AThe method by which the air is lifted.
- BThe stability of the air before lifting occurs.
- CThe amount of condensation nuclei present after lifting occurs.
15What type of clouds will be formed if very stable moist air is forced up slope?
- AFirst stratified clouds and then vertical clouds.
- BVertical clouds with increasing height.
- CStratified clouds with little vertical development.
16What type clouds can be expected when an unstable air mass is forced to ascend a mountain slope?
- ALayered clouds with little vertical development.
- BStratified clouds with considerable associated turbulence.
- CClouds with extensive vertical development.
17Which of the following combinations of weather producing variables would likely result in cumuliform-type clouds, good visibility, rain showers, and possible clear-type icing in clouds?
- AUnstable, moist air, and no lifting mechanism.
- BStable, dry air, and orographic lifting.
- CUnstable, moist air, and orographic lifting.
18The suffix “nimbus”, used in naming clouds, means a
- ACloud with extensive vertical development.
- BRain cloud.
- CDark massive, towering cloud.
19What are the four families of clouds
- AStratus, cumulus, nimbus, and cirrus.
- BClouds formed by updrafts, fronts, cooling layers of air, and precipitation into warm air.
- CHigh, middle, low, and those with extensive vertical development.
20A high cloud is composed mostly of
- AOzone.
- BCondensation nuclei.
- CIce crystals.
21Which family of clouds is least likely to contribute to structural icing on an aircraft?
- ALow clouds
- BHigh clouds.
- CClouds with extensive vertical development.
22Which clouds have the greatest turbulence?
- ATowering cumulus.
- BCumulonimbus.
- CAltocumulus castellanus.
23Standing lenticular clouds, in mountainous areas, indicate
- AAn inversion.
- BUnstable air.
- CTurbulence.
24The presence of standing lenticular altocumulus clouds is a good indication of.
- AA jet stream.
- BVery strong turbulence.
- CHeavy icing conditions.
25Ice pellets encountred during flight normally are evidence that
- AA warm front has passed.
- BA warmfront is about to pass.
- Cthere are thunderstroms in the area
26An air mass is a body of air that
- AHas similar cloud formations associated with it.
- BCreates a wind shift as it moves across the Earth’s surface.
- CCovers an extensive area and has fairly uniform properties of temperature and moisture.
27Which weather phenomenon is always associated with the passage of a frontal system?
- AA wind change.
- BAn abrupt decrease in pressure.
- CClouds, either ahead or behind the front.
28If you fly into severe turbulence, which flight condition should you attempt to maintain?
- AConstant airspeed (VA).
- BLevel flight attitude.
- CConstant altitude and constant airspeed.
29If severe turbulence is encountered during your IFR flight, the airplane should be slowed to the design maneuvering speed because the
- AManeuverability of the airplane will be increased.
- BAmount of excess load than can be imposed on the wing will be decreased.
- CAirplane will stall at a lower angle of attack, giving an increased margin of safety.
30A pilot reporting turbulence that momentarily causes slight, erratic changes in altitude and/or attitude should report it as
- ALight turbulence.
- BModerate turbulence.
- CLight chop.
31What are the requirements for the formation of a thunderstorm?
- AA cumulus cloud with sufficient moisture.
- BA cumulus cloud with sufficient moisture and an inverted lapse rate.
- CSufficient moisture, an unstable lapse rate, and a lifting action.
32Which weather phenomenon signals the beginning of the mature stage of a thunderstorm?
- AThe start of rain at the surface.
- BGrowth rate of clouds is maximum.
- CStrong turbulence in the cloud.
33During the life cycle of a thunderstorm, which stage is characterized predominately by downdrafts?
- ACumulus.
- BDissipating.
- CMature.
34What is an indication that downdrafts have developed and the thunderstorm cell has entered the mature stage?
- AThe anvil top has completed its development.
- BPrecipitation begins to fall from the cloud base.
- CA gust front forms.
35Where do squall lines most often develop?
- AIn an occluded front.
- BIn a cold air mass.
- CAhead of a cold front.
36Which thunderstorm generally produce the most severe conditions, such as heavy hail and destructive.
- AWarm front.
- BSquall line.
- CAir mass.
37What is indicated by the term “embedded thunderstorms”?
- ASevere thunderstorms are embedded within a squall line.
- BThunderstorms are predicted to develop in a stable air mass.
- CThunderstorms are obscured by massive cloud layers and cannot be seen.
38Which weather phenomenon is always associated with a thunderstorm?
- ALightning.
- BHeavy rain showers.
- CSupercooled raindrops.
39Which procedure is recommended if a pilot should unintentionally penetrate embedded thunderstorm activity?
- AReverse aircraft heading or proceed toward an area of known VFR conditions.
- BReduce airspeed to maneuvering speed and maintain a constant altitude.
- CSet power for recommended turbulence penetration air speed and attempt to maintain a level
flight attitude.
40Which conditions result in the formation of frost?
- AThetemperatureofthecollectingsurfaceisatorbelowfreezingandsmalldropletsofmoisturearefailing.
- BWhen dew forms and the temperature is below freezing.
- CTemperatureofthecollectingsurfaceisbelowthedewpointofsurroundingairandthedewpointiscolder
41Why is frost considered hazardous to flight operation?
- AFrost changes the basic aerodynamic shape of the airfoil.
- BFrost decreases control effectiveness.
- CFrost causes early airflow separation resulting in a loss of lift.
42In which meteorological environment is aircraft structural icing most likely to have the highest rate of accumulation?
- ACumulonimbus clouds.
- BHigh humidity and freezing temperature.
- CFreezing rain.
43Where does wind shear occur?
- AExclusively in thunderstorms.
- BWherever there is an abrupt decrease in pressure and/or temperature.
- CWith either a wind shift or a wind speed gradient at any level in the atmosphere.
44What is an important characteristic of wind shear?
- At is primarily associated with the lateral vortices generated by thunderstorms.
- BIt usually exists only in the vicinity of thunderstorms, but may be found near a strong temperature inversion.
- CIt may be associated with either a wind speed gradient at any level in the atmosphere.
45Which is a characteristic of low-level wind shear as it relates to frontal activity?
- AWith a warm front, the most critical period is before the front passes the airport.
- BWith a cold front, the most critical period is just before the front passes the airport.
- CTurbulence will always exist in wind-shear conditions.
46
Which forecast provides specific information concerning expected sky cover, cloud tops, visibility, weather, and obstructions to vision in a route formal?- AArea Forecast.
- BTerminal Forecast.
- CTranscribed Weather Broadcast.
47The Surface Analysis Chart depicts
- AFrontallocationsandexpectedmovement, pressurecenters, cloudcoverage, andobstructionstovisionat the time of chart transmission.
- BActual frontal positions, pressure patterns, temperature, dew point, wind, weather, and
obstructions at the valid time of the chart. - CActual pressure distribution, frontal systems, cloud heights and coverage, temperature, dew point, and wind at the time shown on the chart.
48Which provides a graphic display of both VFR and IFR weather?
- ASurface Weather Map.
- BRadar Summary Chart.
- CWeather Depiction Chart.
49When total sky cover is few or scattered, the height shown on the Weather Depiction Chart is the
- ATop of the lowest layer.
- BBase of the lowest layer.
- CBase of the highest layer.
50Which weather chart depicts conditions forecast to exist at a specific time in the future?
- AFreezing Level Chart.
- BWeather Depiction Chart.
- C12-Hour Significant Weather Prognostication Chart.
51What is the upper limit of the low level Significant Weather Prognostic Chart?
- A30.000 feet.
- B24.000 feet.
- C18.000 feet.
52The most current en route and destination weather information for an instrument flight should be obtained from the
- AAFSS.
- BATIS broadcast.
- CNotices to Airman Publications.
53What is meant by the Special METAR weather observation for KBOI? SPECI KBOI 09185AZ 32005KT 1 1/2SM RA BR OVC007 17/16 A2990 RMK RAB12
- ARain and fog obscuring two-tenths of the sky, rain began at 1912z.
- BRain and mist obstructing visibility, rain began at 1812Z.
- CRain and overcast at 1200 feet AGL.
54To best determine observed weather conditions between weather reporting stations, the pilot should refer to
- APilot reports.
- BArea Forecast.
- CPrognostic charts.
55A pilot reporting turbulence that momentarily causes slight, erratic changes in altitude and/or attitude should report it as
- ALight chop.
- BLight turbulence.
- CModerate turbulence.
56When turbulence causes changes in altitude and/or attitude, but aircraft control remains positive, that should be reported as
- ALight
- BSevere
- CModerste
57Turbulence that is encountered above 15.000 feet AGL not associated with cumuliform cloudiness, including thunderstorms, should be reported as
- ASevere turbulence.
- BClear air turbulence.
- CConvective turbulence.
58
What values are used for Winds Aloft Forecasts?- ATrue directions and MPH.
- BTrue directions and Knots.
- CMagnetic direction and knots.
59SIGMETs are issued as a warning of weather conditions which are hazardous
- ATo all aircraft.
- BParticularly to heavy aircraft.
- CParticularly to light airplanes.
60Which correctly describes the purpose of convective SIGMETs (WST)?
- AThey consist of an hourly observation of tornadoes, significant thunderstorm activity, and large hail stone activity
- BThey contain both an observation and a forecast of all thunderstorm and hailstone activity. The forecast is valid for 1 hour only.
- CThey consist of either an observation and a forecast or just a forecast for tornadoes, significant
thunderstorm activity, or hail greater than or equal 3/4 inch in diameter.
61What type of in flight Weather Advisories provides an en route pilot with information regarding the possibility of moderate icing, moderate turbulence, winds of 30 knots or more at the surface and extensive mountain obscurement?
- AConvective SIGMETs and SIGMETs.
- BSevere Weather Forecast Alerts (AWW) AND SIGMETs.
- CAIRMETs and Center Weather Advisories (CWA).
62What single reference contains information regarding volcanic eruption, that is occurring or expected to occur?
- AIn-flight Weather Advisories.
- BTerminal Area Forecast (TAF).
- CWeather Depiction Chart.
63The Hazardous In flight Weather Advisory Service (HIWAS) is a broadcast service over service over selected VORs that provides
- ASIGMETs and AIRMETs at 15 minutes and 45 minutes past the hour for the first hour after issuance.
- BContinuous broadcast of in flight weather advisories.
- CSIGMETs, CONVECTIVE SIGMETs and AIRMETs at 15 minutes and 45 minutes past the hour.
64When are severe weather watch bulletins (AWW) issued?
- AEvery 12 hours as required
- BEvery 24 hours as required
- CUnscheduled and issued as required.
65SIGMETs are issued as a warning of weather conditions potentially hazardous
- AParticularly to light aircraft.
- BTo all aircraft.
- COnly to light aircraft operations.
66Which meteorological condition is issued in the form of a SIGMET (WS)?
- AWidespread sand or dust storms lowering visibility to less than 3 miles.
- BModerate icing.
- CSustained winds of 30 knots or greater at the surface.
67The surface Analysis Chart depicts
- AActual pressure systems, frontal locations, cloud tops, and precipitation at the time shown on the chart.
- BFrontal locations and expected movement, pressure centers, cloud coverage, and obstructions to vision at the time of chart transmission.
- CActual frontal positions, pressure patterns, temperature, dewpoint, wind, weather, and
obstructions to vision at the valid time of the chart.
68What important information is provided by the Radar Summary Chart that is not shown on other weather charts?
- ALines and cells of hazardous thunderstorms.
- BTypes of precipitation.
- CAreas of cloud cover and icing levels within the clouds.
69What is the lowest cloud in the stationary group associated with moutain wave?
- ARotor Cloud
- BStanding Lenticular
- CLow Stratus
70At which location does Coriolis force have the laest effect on wind direction
- AAt the poles
- BMiddle latitudes (30°-60°)
- CAt the Equator.
71El codigo SKC se utiliza en el METAR cuando?
- ALa Visibilidad es menos a 10 KM. Y hay nubosidad por debajo de 5000 FT.
- BLa visibilidad horizontal es mayor a 10 KM. Y el cielo esta despejado.
- CLa visbilidad horizontal es menor de 10 KM. Y el viento esta despejado.
72En un mapa meteorológico y en una carta de vuelo, un frente oculido se representa por?
- AUna linea de color púrpura, triángulos y semicirculos colocados sobre éste.
- BUna linea azul y triángulos alternos colocados a lo largo de éste.
- CUna línea de color rojo y semicirculos colocados a lo largo de éste.
73En el tropico el mayor peligro para una aeronave en vuelo cerca o dentro de una CB es?
- ALos rayos y el granizo.
- BLa turbulencia.
- CLa mala visibilidad.
74What conclusion(s) can be drawn from a 500 millibar Constant Pressure Chart for a planned flight at FL 180?
- AWinds a loft at FL 180 generally flow across the height contours.
- BObserved temperature, wind, and temperature/dew point spread along the proposed route can be
approximated. - CUpper highs, lows, troughs, and ridges will be depicted by the use of lines of equal pressure.
75Which meteorological conditions are depicted by prognostic chart?
- AConditions existing at the time of the observation.
- BInterpretation of weather conditions for geographical areas between reporting stations.
- CConditions forecast to exist at a specific time shown on the chart.
76What flight planning information can a pilot derive from constant pressure charts?
- AClear air turbulence and icing conditions.
- BLevels of widespread cloud coverage.
- CWinds and temperatures aloft.
77A prognostic chart depicts the conditions
- AExisting at the surface during the past 6 hours
- BWhich presently exist exist from the 1.000-milibar through the 700-milibar level.
- CForecast to exist at a specific time in the future.
78A ceiling is defined as the height of the
- AHighest layer of clouds or obscuring phenomena aloft that covers over 6/10 of the sky.
- BLowest layer of clouds that contributed to the overall overcast.
- CLowest layer of clouds or obscuring phenomena aloft that is reported as broken or overcast.
79What significant sky condition is reported in this METAR observation? METAR KBNA 1250Z 33018KT 290V360 1/2SM R31/2700FT +SNBLSNFG VV0008 00/M03 A2991RMK RERAE42SNB42
- ARunway 31 ceiling is 2700 feet.
- BSky is obscured with vertical visibility of 800 feet.
- CMeasured ceiling is 300 feet overcast.
80The body of a Terminal Aerodrome Forecast (TAF) covers a geographical proximity within a
- A5 nautical mile radius of the center of an airport.
- B5 statute mile radius from the center of an airport runway complex.
- C5 to 10 statute mile radius from the center of an airport runway complex.
81Which primary source should be used to obtain forecast weather information at your destination for the planned ETA?
- AArea Forecast.
- BRadar Summary and Weather Depiction Charts.
- CTerminal Aerodrome Forecast (TAF).
82A “VRB” wind entry in a Terminal Aerodrome Forecast (TAF) will be indicated when the wind is
- A3 knots or less.
- B6 knots or less.
- C9 knots or less.
83When the visibility is greater than 6 SM on a TAF it is expressed as
- A6PSM.
- BP6SM.
- C6SMP.
84What is the forecast wind at 1800z in the following TAF? KMEM 091740Z 1818 00000KT 1/2SM RAFG OVC005=
- ACalm.
- BUnknown.
- CNot recorded.
85From which primary source should you obtain information regarding the weather expected to exist at your destination at your estimated time of arrival?
- AWeather Depiction Chart.
- BRadar Summary and Weather Depiction Chart.
- CTerminal Aerodrome Forecast.
86Which is true regarding the use of airborne weather-avoidance radar for the recognition of certain weather conditions?
- AThe radarscope provides no assurance of avoiding instrument weather conditions.
- BThe avoidance of hail is assured when flying between and just clear of the most intense echoes.
- CThe clear área between intense echoes indicates that visual sighting of storms can be maintained when flying between the echoes
87When is the wind-group at one of the forecast altitudes omitted at a specific location or station in the Winds and Temperature ALOFT Forecast (FD)? When the wind
- AIs less 5 knots.
- BIs less 10 knots.
- CAt the altitude is within 1.500 feet of the station elevation.
88When are severe weather watch bulletins (WW) issued?
- AEvery 12 hours as required.
- BEvery 24 hours as required.
- CUnscheduled and issued as required.
89SIGMETs are issued as a warning of weather conditions potentially hazardous.
- Aparticularly to light aircraft.
- Bto all aircraft.
- Conly to light aircraft operations.
90A pilot planning to depart at 1100z on an IFR flight is particularly concerned about the hazard of icing. What sources reflect the most accurate information on icing conditions (current and forecast) at the time of departure?
- ALow-level Significant Weather Prognostic Chart, and the Area Forecast.
- BThe Area Forecast, and the Freezing Level Chart.
- CPilot weather reports (PIREPs), AIRMETs, and SIGMETs
Informações
- Descrição
- Quiz sobre examen 2, criado por Andres Felipe Londono em 21-10-2016.
- Idioma
- Español
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