CFI QUIZ #2
Instructor's Name___________________________
 
Student's Name_____________________________ Date__________________
 
Instructions: Answer the multiple-choice question with the best possible answer. Write the answer to the essay question in the space provided. If more space is needed, use the reverse side.
 
 
1. In what part of the atmosphere does most weather occur?
 
 
 
2. The average lapse rate in the troposphere is
 
 
 
3. Which weather conditions should be expected beneath a low-level temperature inversion layer when the relative humidity is high?
A. Light wind shear and poor visibility due to light rain.
B. Smooth air and poor visibility due to fog, haze, or low clouds.
C. Turbulent air and poor visibility due to fog, low stratus type clouds, and showery precipitation.
 
 
 
4. If the air temperature is +6 °C at an elevation of 700 feet and a standard (average) temperature lapse rate exists, what will be the approximate freezing level?
A. 6,700 feet MSL.
B. 3,700 feet MSL.
C. 2,700 feet MSL.
 
 
 
5. Winds at 5,000 feet AGL on a particular flight are southwesterly while most of the surface winds are southerly. This difference in direction is primarily due to
A. local terrain effects on pressure.
B. stronger Coriolis force at the surface.
C. friction between the wind and the surface.
 
 
6. In the Northern Hemisphere, a pilot making a long distance flight from east to west would most likely find favorable winds associated with high- and low-pressure systems by flying to the
A. north of a high and a low.
B. north of a high and to the south of a low.
C. south of a high and to the north of a low.
7. Streamers of precipitation trailing beneath clouds but evaporating before reaching the ground are known as
 
 
 
8. At approximately what altitude above the surface would you expect the base of cumuliform clouds if the surface air temperature is 77 °F and the dewpoint is 53 °F?
A. 9,600 feet AGL.
B. 8,000 feet AGL.
C. 5,500 feet AGL.
 
 
 
9. Consider the following air mass characteristics:
 
1. Cumuliform clouds.
2. Stable lapse rate.
3. Unstable lapse rate.
4. Stratiform clouds and fog.
5. Smooth air (above the friction level) and poor visibility.
6. Turbulence up to about 10,000 feet and good visibility except in areas of precipitation.
 
A moist air mass, which is colder than the surface over which it passes, frequently has which of the above characteristics?
A. 1, 3, and 6.
B. 3, 4, and 5.
C. 2, 4, and 5.
 
 
10. Frontal waves normally form on
A. stationary or occluded fronts.
B. slow-moving warm fronts or occluded fronts.
C. slow-moving cold fronts or stationary fronts.
 
 
11. Low-level wind shear, which results in a sudden change of wind direction, may occur
A. after a warm front has passed.
B. when surface winds are light and variable.
C. when there is a low-level temperature inversion with strong winds above the inversion.
12. Which is an operational consideration regarding aircraft structural icing?
A. It is unnecessary for an aircraft to fly through rain or cloud droplets for structural ice to form.
B. Clear ice is most likely to form on an airplane when flying through stratified clouds or light drizzle.
C. In order for structural ice to form, the temperature at the point where moisture strikes the aircraft must be 0 °C (32 °F) or colder.
 
 
 
13. What are the minimum requirements for the formation of a thunderstorm?
A. Sufficient moisture and a lifting action.
B. Sufficient moisture, an unstable lapse rate, and lifting action.
C. Towering cumulus clouds, sufficient moisture, and a frontal zone.
 
 
 
14. Hail, an in-flight hazard, is most likely to be associated with
A. cumulus clouds.
B. stratocumulus clouds.
C. cumulonimbus clouds.
 
 
 
15. One condition necessary for the formation of fog is
A. calm air.
B. visible moisture.
C. high relative humidity.
 
 
 
16. Radiation fog is most likely to occur under what conditions?
A. Warm, moist air being forced upslope by light winds resulting in the air being cooled and condensed.
B. High humidity during the early evening, cool cloudless night with light winds, and favorable topography.
C. Low temperature/dewpoint spread, calm wind conditions, the presence of hydroscopic nuclei, low overcast, and favorable topography.
 
 
 
17. With respect to advection fog, which statement is true?
A. It forms almost exclusively at night or near daybreak.
B. It forms when unstable air is cooled adiabatically.
C. It can appear suddenly during day or night, and it is more persistent than radiation fog.
 
 
 
18. In reference to clear air turbulence (CAT), areas to be avoided are those where horizontal wind shear exceeds
A. 40 knots per 150 miles.
B. 10 knots per 50 miles.
C. 6 knots per 1,000 feet.
 
 
 
19. The conditions most favorable to wave formation over mountainous areas are a layer of
A. unstable air at mountaintop altitude and a wind of at least 20 MPH blowing across the ridge.
B. stable air at mountaintop altitude and a wind of at least 20 MPH blowing across the ridge.
C. moist, unstable air at mountaintop altitude and a wind of less than 5 MPH blowing across the ridge.
 
 
 
20. Which statement is true concerning this radar weather report for OKC?
OKC 1934 LN 8TRW / 86/ 40 164/60 199/115 15W 2425 MT 570 AT 159/65 2 INCH HAIL RPRTD THIS ECHO.
A. The visibility is 8 miles in rain showers.
B. There are three cells with tops at 11,500, 40,000, and 60,000 feet.
C. The maximum top of the cells is 57,000 feet located 65 NM south-southeast of the station.
21. By referring to the isobars on a Surface Analysis Weather Chart, what can a person determine?
A. Pressure gradient.
B. Temperature changes.
C. Areas of precipitation.
 
 
 
22. The intensity trend of a front (as of chart time) is best determined by referring to a
A. Surface Analysis.
B. Radar Summary Chart.
C. Weather Depiction Chart.
 
 
 
23. What is the meaning of MVFR, as used in the categorical outlook portion of an Aviation Area Forecast?
A. A ceiling less than 1,000 feet and/or visibility less than 3 miles.
B. A ceiling less than 1,000 feet and/or visibility less than 1 mile.
C. A ceiling of 1,000 to 3,000 feet and/or visibility of 3 to 5 miles.
 
 
 
24. What information would be covered in an AIRMET?
A. Severe turbulence.
B. Extensive mountain obscurement.
C. Hail of 3/4 inch or greater diameter.
 
 
 
25. What information is contained in a CONVECTIVE SIGMET in the conterminous United States?
A. Moderate thunderstorms and surface winds greater than 40 knots.
B. Tornadoes, embedded thunderstorms, and hail 3/4 inch or greater in diameter.
C. Severe icing, severe turbulence, or widespread dust storms lowering visibility to less than 3 miles.
 
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