Which of the following are key attributes of smoke?

The correct choice emphasizes key attributes of smoke that are crucial for understanding its behavior and implications during a fire event. Volume refers to the amount of smoke produced, which can impact visibility and air quality. Velocity describes how quickly the smoke travels, which can affect how rapidly it spreads through a structure and influences evacuation strategies. Density indicates how compact the smoke particles are, which plays a critical role in the potential for smoke inhalation hazards and the effectiveness of ventilation strategies. Color can provide valuable information about the materials burning; for instance, dark smoke often indicates incomplete combustion and the presence of toxic substances.

Understanding these attributes helps firefighters assess the situation more effectively, plan their operations, and mitigate risks associated with smoke during firefighting efforts.