Cooperative Personnel Services Firefighter (CPS) Practice Exam 2026 - Free Firefighter Exam Questions and Study Guide

An explosion is characterized by a sudden release of energy, which typically occurs in a very short time frame. This rapid release leads to a dramatic increase in pressure that can produce a shockwave, which is one of the defining features that sets an explosion apart from a fire. In contrast, a fire develops more gradually and is sustained by a continuous fuel source rather than a sudden discharge of energy.

The nature of explosions often involves chemical reactions or physical processes that lead to this immediate release of energy, which can cause significant damage to the surrounding area and is usually accompanied by a loud noise. Understanding this distinction is essential for fire safety and emergency response, as different actions and precautions are employed when dealing with explosions versus fires.