Drone Weather Test

The presence of ice pellets at the surface is evidence that there

• are thunderstorms in the area

• is a temperature inversion with freezing rain at a higher altitude

• has been a cold frontal passage

The minimum distance from clouds required for SUAS part 107 operations is

• 500 feet below, 2,000 feet horizontally

• clear of clouds

• 500 feet above, 1,000 feet horizontally

What is the best way for a remote pilot to determine the likelihood of local fog formation?

• Monitor the wind conditions to insure the wind speed is not increasing

• Monitor the barometric pressure to ensure that it is not decreasing

• Monitor the temperature / dew point spread

Which weather phenomenon is always associated with a thunderstorm?

• Heavy rain

• Hail

• Lightning

What effect does high-density altitude have on the efficiency of a UA propeller?

• Density altitude does not affect propeller efficiency

• Propeller efficiency is increased

• Propeller efficiency is decreased

What are the characteristics of a moist, unstable air mass?

• Turbulence and showery precipitation

• Poor visibility and smooth air

• Haze and smoke

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

• wind direction

• type of precipitation

• stability of the air mass

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

• Showery precipitation

• Poor surface visibility

• Turbulent air

What is the expected duration of an individual microburst?

• Two minutes with maximum winds lasting approximately 1 minute

• One microburst may continue for as long as 2 to 4 hours

• Seldom longer than 15 minutes from the time the burst strikes the ground until dissipation

Clouds, fog, or dew will always form when

• Water vapor condenses

• Water vapor is present

• Relative humidity reaches 100 percent