What is true about the heat retention of sparks?

Sparks have the capability to maintain their heat for a significant period, which gives them the potential to ignite combustible materials upon contact. When sparks are produced during activities such as welding or grinding, they can reach high temperatures and sustain enough energy to ignite flammable substances. This property is crucial to consider in environments where combustible materials are present, as even a brief exposure to a hot spark can lead to ignition.

The ability of sparks to retain heat for a time means that proper safety measures must be taken to control the surrounding environment and minimize the risk of fire hazards. Proper handling and awareness of sparks in any work setting are essential for maintaining safety.