Weather 1

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

• Movement of air

• Pressure differential

• Heat exchange

What situation is most conducive to the formation of radiation fog?

• Warm, moist air over low, flatland areas on clear, calm nights

• Moist, tropical air moving cold, offshore water

• The movement of cold air over much warmer water

Clouds, fog, or dew, will always form when

• Water vapor is present

• Water vapor condenses

• Relative humidity reaches 100 percent

A stable air mass is most likely to have which characteristic?

• Showery precipitation

• Turbulent air

• Poor surface visibility

What measurement can be used to determine the stability of the atmosphere?

• Atmospheric pressure

• Actual lapse rate

• Surface temperature

What are characteristics of a moist, unstable air mass?

• Turbulence and showery precipitation

• Poor visibility and smooth air

• Haze and smoke

While operating around buildings, the remote PIC should be aware of the creation of wind gusts that

• Change rapidly in direction and speed causing turbulence

• Enhance stability and imagery

• Increase performance of the aircraft

What type of fog depends upon wind in order to exist?

• Radiation fog and ice fog

• Steam fog and ground fog

• Advection fog and upslope fog

Which of the following considerations is most relevant to a remote PIC when evaluating unmanned aircraft performance?

• The type of sUAS operation

• The number of available ground crew

• Current weather conditions

What causes variations in altimeter settings between weather reporting?

• Unequal heating of the Earth's surface

• Variation of terrain elevation

• Coriolis effect