SU-7 Aviation Weather PP Exam

1. Every physical process of weather is accompanied by, or is the result of, a

• movement of air.
• pressure differentials.
• heat exchange.

2. What causes variations in altimeter settings between weather reporting points?

• Unequal heating of the Earth's surface.
• Variations of terrain elevation.
• Coriolis force.

3. The wind at 5,000 feet AGL is southwesterly while the surface wind is southerly. This difference in direction is primarily due to

• stronger pressure gradient at higher altitudes.
• friction between the wind and the surface.
• stronger Coriolis force at the surface.

4. The development of thermals depends upon

• a counterclockwise circulation of air.
• temperature inversions.
• solar heating.

5. Convective circulation patterns associated with sea breezes are caused by

• warm, dense air moving inland from over the water.
• water absorbing and radiating heat faster than the land.
• cool, dense air moving inland from over the water.

6. The boundary between two different air masses is referred to as a

• frontolysis
• frontogenesis.
• front.

7. One weather phenomenon which will always occur when flying across a front is a change in the

• wind direction.
• type of precipitation.
• stability of the air mass.

8. One of the most easily recognized discontinuities across a front is

• a change in temperature.
• an increase in cloud coverage.
• an increase in relative humidity.

9. If there is thunderstorm activity in the vicinity of an airport at which you plan to land, which hazardous atmospheric phenomenon might be expected on the landing approach?

• Precipitation static.
• Wind-shear turbulence.
• Steady rain.

10. A non-frontal, narrow band of active thunderstorms that often develop ahead of a cold front is known as a

• prefrontal system.
• squall line.
• dry line