Instrument Rating Checkride Practice Test

The primary feature of a ridge in meteorological terms is an extended area of high pressure. A ridge represents an area where atmospheric pressure is higher than that of the surrounding areas, which generally leads to stable weather conditions. As air flows out from the high-pressure center, it tends to descend, resulting in clearer skies and reduced precipitation. This formation often contrasts with troughs, which are associated with lower pressure and more unsettled weather.

In contrast, the other options relate to different meteorological phenomena: extended areas of low pressure indicate depressions, while rising air is characteristic of areas where convection occurs, often seen in storm systems. Stationary weather patterns can arise in various contexts but are more associated with blocking patterns rather than specific features like ridges and troughs. Understanding these distinctions is crucial for pilots, especially when interpreting weather reports and making decisions regarding flight safety.