The term for the transfer of heat through fluid movement is called convection. In convection, warmer, less dense fluid rises while cooler, denser fluid sinks, creating a continuous circulation pattern. This process is essential in various natural phenomena, such as weather systems and ocean currents, as well as in artificial systems like radiators and heating systems. Understanding convection is crucial in fields such as meteorology and engineering, as it helps explain how heat distributes in different environments, influencing climate and design considerations.