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Aviation Weather Final Exam Questions
and Answers Already Graded A
Every physical process of weather is accompanied by, or is the result of, a
a. Movement of air
b. Pressure differential
c. Heat exchange โโC. Heat Exchange
What causes variations in altimeter settings between weather points?
a. Unequal heating of the Earth's surface
b. Variation of terrain elevation
c. Coriolis Force โโA. Unequal heating of the Earth's surface
The wind at 5,000 feet AGL is southwesterly while the surface wind is southerly. This difference in direction is primarily due to
a. Stronger pressure gradient at higher altitudes
b. Friction between the wind and the surface
c. Stronger Coriolis force at he surface. โโB. Friction between the wind and the surface
Convective circulation patterns associated with sea breezes are caused by
a. Warm, dense air moving inland from over the water
b. Water absorbing and radiating heat faster than the land
c. Cool, dense air moving inland from over the water โโC. Cool, dense air moving inland from over the water
A temperature inversion would most likely result in which weather condition?
A. Clouds w/extensive vertical development above an inversion aloft
B. Good visibility in lower levels of the atmosphere and poor visibility above an inversion aloft
c. An increase in temperature as altitude is increased โโC. Increase in temperature as altitude is increased
What is meant by the term "dew point"?
If the temperature/dewpoint spread is small and decreasing, and the temperature is 62 dg. F, what type of weather is most likely to develop?
A. Freezing precipitation
B. Thunderstorms
C. Fog or low clouds โโC. Fog or low clouds
The boundary between two different air masses is referred to as a
A. Frontolysis
B. Frontogenesis
C. Front โโC. Front
One weather phenomenon which will always occur when flying across a front is a change in the
A. Wind direction
B. Type of precipitation
C. Stability of the air mass โโA. Wind direction
One of the most easily recognized discontinuities across a front is
A. A change in temperature
B. An increase in cloud coverage
C. An increase in relative humidity โโA. A change in temperature
What would decrease the stability of an air mass?
A. Warming from below
B. Cooling from below
C. Decrease in water vapor โโA. Warming from below
Which weather conditions should be expected beneath a low-level temperature inversion layer when the relative humidity is high?
A. Smooth air, poor visibility, fog, haze, or low clouds
B. Light wind shear, poor visibility, haze, and light rain
A. Produce stratus type clouds
B. Cause shower and thunderstorms
C. Develop convective turbulence โโA. Produce stratus type clouds
If an unstable air mass is forced upward, what type clouds can be expected?
A. Stratus clouds with little vertical development
B. Stratus clouds with considerable associated turbulence
C. Clouds with considerable vertical development and associated turbulence โโC. Clouds with considerable vertical development and associated turbulence
Crests of standing mountain waves may be marked by stationary, lens-shaped clouds known as
A. Mammatocumulus clouds
B. Standing lenticular clouds
C. Roll clouds โโB. Standing lenticular clouds
Possible mountain wave turbulence could be anticipated when winds of 40 knots or greater blow
A. Across a mountain ridge, and the air is stable
B. Down a mountain valley, and the air is unstable
C. Parallel to a mountain peak, and the air is stable โโA. Across a mountain ridge, and the air is stable
What feature is normally associated with the cumulus stage of a thunderstorm?
A. Roll cloud
B. Continuous updraft
C. Frequent lightning โโB. Continuous updraft
What conditions are necessary for the formation of thunderstorms?
A. High humidity, lifting force, and unstable conditions
B. High humidity, high temperature, and cumulus clouds
C. Lifting force, moist air, and extensive cloud cover โโA. High humidity, lifting force, and unstable conditions
C. Following frontal passage when stratocumulus clouds form indicating mechanical mixing โโB. In areas of low-level temperature inversion, frontal zones, and clear air turbulence
A pilot can expect a wind-shear zone in a temperature inversion whenever the windspeed at 2,000 to 4,000 feet AGL is at least
A. 10 knots
B. 15 knots
C. 25 knots โโC. 25 knots
The presence of ice pellets at the surface is evidence that there
A. Are thunderstorms in the area
B. Has been a cold front passage
C. Is a temperature inversion with freezing rain at a higher altitude โโC. Is a temperature inversion with freezing rain at a higher altitude
In which environment is aircraft structural ice most likely to have the highest accumulation rate?
A. Cumulus clouds with below freezing temperatures
B. Freezing drizzle
C. Freezing rain โโC. Freezing rain
What situation is most conducive to the formation of radiation fog?
A. Warm, moist air over low, flatland areas on clear, calm nights
B. Moist, tropical air moving over cold, offshore water
C. The movement of cold air over much warmer water โโA. Warm moist air over low, flatland areas on clear, calm nights
In which situation is advection fog most likely to form?
A. A warm, moist air mass on the inward side of mountains
B. An air mass moving inland from the coast in winter
C. A light breeze blowing colder air out to sea โโB. An airmass moving inland from the coast in winter
B. Frost slows the airflow over the airfoils, increasing control effectiveness
C. Frost spoils the smooth flow of air over the wings, decreasing lifting capability โโC. Frost spoils the smooth flow of air over the wings, decreasing lifting capability
For aviation purposes, ceiling is defined as the height above the Earth's surface of the
A. Lowest reported obscuration and the highest layer of clouds reported as overcast
B. Lowest broken or overcast layer or vertical visibility into an obscuration
C. Lowest layer of clouds reported as scattered, broken or thin โโB. Lowest broken or overcast layer or vertical visibility into an obscuration
From which primary source should information be obtained regarding expected weather at the estimated time of arrival if your destination has no Terminal Forecast?
A. Weather Depiction Chart
B. Area Forecast
C. Low-Level Prognostic Chart โโB. Area Forecast
To determine the freezing level and areas of probable icing aloft, the pilot should refer to the
A. Inflight Aviation Weather Advisories
B. Area Forecast
C. Weather Depiction Chart โโA. Inflight Aviation Weather Advisories
What values are used for Winds Aloft Forecasts?
A. Magnetic direction and knots
B. Magnetic direction and miles per hour
C. True direction and knots โโC. True direction and knots
When the term "light and variable" is used in reference to a Winds Aloft Forecast, the coded rout and windspeed is
A. 0000 and less than 7 knots
B. 9900 and less than 5 knots
C. 9999 and less than 10 knots โโB. 9900 and less than 5 knots
C. All aircraft โโC. All aircraft
AIRMETs are advisories of significant weather phenomena but of lower intensity than SIGMETs and are intended for dissemination to
A. Only IFR pilots
B. All pilots
C. Only VFR pilots โโB. All pilots
What services should a pilot normally expect from an En Route Flight Advisory Service (EFAS)?
A. Actual weather information and thunderstorm activity along the route
B. Preferential routing and radar vectoring to circumnavigate severe weather
C. Severe weather information, changes to flight plans, and receipt of routine position reports โโA. Actual weather information and thunderstorm activity along the route
