Basic Firefighter Written Exam 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

What form of energy is primarily released during combustion?

Sound and light

Light and heat

During combustion, the primary forms of energy released are light and heat. This reaction occurs when a substance, typically a fuel, reacts rapidly with oxygen, resulting in the release of energy in the form of thermal energy (heat) and often visible light. The heat generated can cause thermal injury, spread flames, and contribute to the further combustion of materials, while the light emitted is a result of the high temperatures igniting substances and producing visible flames.

While chemical energy is involved in the process as stored energy in the fuel, the form of energy primarily released during combustion is light and heat. Sound and electromagnetic radiation do occur but are not the main products of combustion, making them less relevant in this context. Understanding this concept helps in grasping the fundamental principles of fire behavior and management in firefighting.

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Electromagnetic radiation

Chemical energy

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