Which process is involved when warm air rises and cool air moves in to replace it?

The process involved when warm air rises and cool air moves in to replace it is convection. Convection is a method of heat transfer that occurs in fluids, which include both liquids and gases. In this scenario, as the warm air rises, it creates an area of lower pressure beneath it. Consequently, cooler, denser air moves in to fill that space. This cycle of rising warm air and descending cooler air generates convection currents, which are fundamental in various atmospheric and oceanic processes.

The significance of convection is evident in weather phenomena, such as thunderstorms and wind patterns, as it plays a critical role in redistributing heat throughout the atmosphere. Convection is essential in the understanding of weather systems, as it helps explain the movement and mixing of air masses.