What phenomenon describes air in motion?

Wind is the term used to describe air in motion. It occurs due to differences in atmospheric pressure, where air moves from areas of higher pressure to areas of lower pressure. This movement of air can vary in speed and direction, resulting in various wind patterns.

The term encompasses all scales of air movement, from gentle breezes to strong gales. Understanding wind is essential in meteorology and aviation, as it influences weather patterns, flight operations, and the design of aircraft.

Pressure refers to the force exerted by air molecules in a given area, while draft specifically refers to a light current of air that may occur in a confined space. Gust denotes a brief, strong burst of wind but is not applied to the general movement of air. Thus, the most comprehensive term that captures the concept of air in motion is wind.