Answer:
When a spark occurs in an environment where flammable materials are present, it can start a chain reaction that leads to an explosion. The spark provides energy that can ignite the flammable materials and initiate a chemical reaction. This reaction releases a large amount of energy in the form of heat, light, and pressure. As the reaction continues, it creates more heat, which can then ignite more flammable materials and create a self-sustaining process that quickly builds in intensity. This process is known as an explosion.
Step-by-step explanation:
In other words, the spark acts as a trigger that provides the initial energy to start the reaction. The energy released by the reaction then provides the necessary feedback to continue the process, creating a self-sustaining cycle that rapidly releases energy in the form of an explosion. The key to understanding this process is recognizing the role that energy plays in the reaction. Energy is required to initiate the reaction, and once started, the energy released by the reaction fuels the process and causes it to rapidly escalate.