Weather - FAA Part 107 Drone Quiz

Question 1

How does frost form on an aircraft?

Accepted Answer

When the temperature of the collecting surface is at or below the dew point of the adjacent air, and the dew point is below freezing.

Answer

When water drops freeze upon striking the aircraft's surface.

Answer

When flying through supercooled water droplets.

Question 2

What signals the beginning of the mature stage of a thunderstorm?

Accepted Answer

Precipitation falling to the surface.

Answer

The formation of an anvil cloud top.

Answer

The cessation of lightning.

Question 3

What visual cue can a remote pilot use to anticipate the presence of a microburst?

Accepted Answer

A rain shaft descending from a thunderstorm, especially if the rain evaporates before hitting the ground (virga), combined with a ring of blowing dust at the surface.

Answer

A perfectly clear, blue sky.

Answer

A layer of flat, low-lying stratus clouds.

Question 4

What effect does haze have on the ability to see traffic or terrain features during flight?

Accepted Answer

All traffic or terrain features appear to be farther away than their actual distance.

Answer

Haze causes the eyes to focus at infinity.

Answer

The eyes tend to overwork in haze and do not detect relative movement easily.

Question 5

What is relative humidity?

Accepted Answer

The ratio of the amount of water vapor actually in the air to the maximum amount that the air could hold at that temperature.

Answer

The temperature at which air becomes saturated.

Answer

The amount of moisture in the air compared to standard sea level pressure.

Question 6

If the altimeter setting at your local airport drops rapidly from 29.92 to 29.50, what kind of weather system is likely approaching?

Accepted Answer

A low-pressure system, which typically brings cloudy, unsettled weather and precipitation.

Answer

A high-pressure system, which brings clear skies.

Answer

A massive temperature inversion.

Question 7

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

Accepted Answer

Heat exchange.

Answer

Movement of air.

Answer

Pressure differential.

Question 8

While operating a drone in a desert environment during the afternoon, a remote pilot notices small, swirling columns of dust. These are known as:

Accepted Answer

Dust devils, which indicate unstable air and localized turbulence.

Answer

Microbursts.

Answer

Squall lines.

Question 9

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

Accepted Answer

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

Answer

The movement of cold air over much warmer water.

Answer

Moist, tropical air moving over cold, offshore water.

Question 10

What is the expected duration of an individual microburst?

Accepted Answer

Seldom longer than 15 minutes from the time it strikes the ground until dissipation.

Answer

Up to an hour.

Answer

Between 30 and 45 minutes.

Quiz Weather - FAA Part 107 Drone Quiz

Test 10 Questions FAA Part 107 Drone Quiz - Weather, no time limit