Sparks are small, glowing particles that are produced when materials, such as metal or wood, are heated to a high temperature and break apart. They are often seen during activities like welding or when a fire is ignited. Sparks can be created by friction, electrical discharges, or chemical reactions, and they typically fly off in various directions. In addition to their role in fire and heat, sparks can also be a sign of danger. For example, when working with electricity, sparks can indicate a short circuit or malfunction. Understanding how sparks are generated and controlled is important for safety in various environments, including construction and manufacturing.