Which term describes the overall progression from ignition to decay?

Which term describes the overall progression from ignition to decay?

• A. Fire Development
• B. Thermal Layering
• C. Rollover
• D. Decay

Answer: (A)

Fire development describes the entire lifecycle of a fire, from ignition through growth to decay. It names the progression as a whole, not just a single event or stage. Thermal layering is about heat stratification in a space and affects how a fire behaves, but it doesn’t cover the full progression. Rollover is a specific event where flames sweep along the ceiling, occurring during growth. Decay denotes the later stage when the fire is dying out, not the entire progression. Understanding fire development helps you anticipate how flames and heat evolve over time in a structure.

Fire development describes the entire lifecycle of a fire, from ignition through growth to decay. It names the progression as a whole, not just a single event or stage. Thermal layering is about heat stratification in a space and affects how a fire behaves, but it doesn’t cover the full progression. Rollover is a specific event where flames sweep along the ceiling, occurring during growth. Decay denotes the later stage when the fire is dying out, not the entire progression. Understanding fire development helps you anticipate how flames and heat evolve over time in a structure.