A water rocket is a type of model rocket using water as its reaction mass. The pressure vessel—the engine of the rocket—is usually a used plastic soft drink bottle. The water is forced out by a pressurized gas, typically compressed air. It is an example of Newton's third law of motion.
The term hot dog has been used in parts of Europe in place of the more common "water rocket" and in some places they are also referred to as "bottle rockets" (which can be confusing as this term refers to a firework in other places).
Read more about Water Rocket: Operation, Predicting Peak Height, Multi-bottle Rockets and Multi-stage Rockets, Sources of Gas, Nozzles, Fins, Landing Systems, Launch Tubes, Safety, Water Rocket Competitions, World Record, Hot Water Rockets, Bibliography
Famous quotes containing the words water and/or rocket:
“The Laws of Nature are just, but terrible. There is no weak mercy in them. Cause and consequence are inseparable and inevitable. The elements have no forbearance. The fire burns, the water drowns, the air consumes, the earth buries. And perhaps it would be well for our race if the punishment of crimes against the Laws of Man were as inevitable as the punishment of crimes against the Laws of Nature—were Man as unerring in his judgments as Nature.”
—Henry Wadsworth Longfellow (1807–1882)
“A rocket is a reed that thinks brilliantly.”
—José Bergamín (1895–1983)