FAA Part 107 Drone Practice Test

What characteristics are common in unstable air?

1. Showers and stable winds

2. Stratiform clouds and good visibility

3. Cumuliform clouds with turbulence and rough air

4. Continuous rain and stable conditions

The correct answer is: Cumuliform clouds with turbulence and rough air

Unstable air is characterized by vertical movement, which often leads to the formation of cumulus clouds, commonly associated with turbulence and rough air conditions. This is because warm, moist air rises rapidly in unstable atmospheres, resulting in the development of towering cumulus clouds that can lead to convective activity. These conditions are favorable for thunderstorms, turbulence, and other forms of severe weather, making it essential for drone operators to be aware of these signs when planning operations. In contrast, the other options present characteristics that align more with stable air patterns. For example, showers and stable winds suggest a more consistent and predictable weather pattern, while stratiform clouds typically indicate stability and are associated with good visibility. Continuous rain and stable conditions imply less vertical movement and a more uniform weather environment. Understanding these distinctions is crucial for drone pilots, as flying in unstable air can pose significant risks to flight safety.