Skyrocket
A skyrocket is a type of firework that uses a rocket jet motor to rise quickly into the sky. At the apex of its ascent, it is usual for a variety of effects [stars/bangs/crackles etc] to be emitted.
Sky rockets, also just known as "rockets" have to employ some form of stabilisation technique to ensure the flight follows a predictable course. This usually takes the form of a long stick attached to the side of the motor, but can also be any other form of stabilisation, such as spin-stabilisation or fins.
In the UK firework rockets are sold by weight [eg: 4oz, 8oz, 1lb etc]. It is a common misconception that this weight refers to the weight of the rocket itself. In fact this is not the case, and the quoted weight is related to the bore [diameter] of the rocket motor.
The exact definition is as follows. "The weight of a lead sphere that is just supported by a tube that the rocket motor will just fit into"
