What term is used to describe the movement of heat and smoke from high to low pressure areas?

The term that describes the movement of heat and smoke from areas of high pressure to areas of low pressure is known as a flow path. This concept is crucial in understanding how smoke and heat behave during a fire. When a fire occurs, it generates hot gases that rise and create a pressure differential; the hot air in high-pressure zones seeks to move towards the cooler, low-pressure areas.

This flow path is pivotal for firefighters as it can greatly influence the spread of smoke and heat, impacting visibility and temperature within a structure. Understanding flow paths allows firefighters to strategize effectively when entering an environment to control the fire and ensure safety.

The other terms provided, such as ventilation path or smoke evacuation route, relate to ways of managing smoke but do not specifically describe the fundamental behavior of heat and smoke movement due to pressure differentials. Heat clearance channel, while it sounds relevant, does not accurately capture the dynamic relationship between pressure zones that defines the flow path.