What characteristic defines a rocket in pyrotechnics?

A rocket in pyrotechnics is defined by its ability to move through the propulsion provided by ejected combustion products. This action results from the rocket motor, which generates thrust by expelling gas at high speed in one direction. According to the principles of motion, this thrust propels the rocket in the opposite direction, allowing it to ascend into the air.

The distinguishing feature of a rocket is its reliance on this principle of thrust for movement, differentiating it from other pyrotechnic devices that may not exhibit any motion when activated. Understanding this characteristic is crucial for safety and operational procedures in pyrotechnics, as it influences launch setups and safety zones.