Drone Pilot Practice Exam

What characterizes a temperature inversion?

1. The air temperature gets colder as altitude increases

2. The lapse rate functions normally

3. The air temperature gets warmer as altitude increases

4. Clouds form at lower altitudes

The correct answer is: The air temperature gets warmer as altitude increases

A temperature inversion is characterized by a situation where the air temperature actually increases with altitude, contrary to the normal gradient where temperature typically decreases as you ascend. This phenomenon occurs when a layer of warm air traps cooler air closer to the ground. During a temperature inversion, the warm air aloft acts as a cap, preventing the cooler air below from rising. This can lead to various atmospheric effects, including the trapping of pollutants and the formation of fog or low-level clouds. Hence, an inversion is significant as it affects weather patterns and local air quality. Understanding the relationship between temperature and altitude is crucial for interpreting weather conditions and for pilots operating in such environments. Recognizing that the air temperature behaves differently during an inversion is essential for safe and effective navigation.