What is Water rocket?
[[File:Launchbottle.jpg|thumb|right|Water rocket launch]] A '''water rocket''' is a type of [[model rocket]] using [[water]] as its [[working mass]]. The water is forced out by a pressurized gas, typically [[compressed air]]. ==Other websites== {{commons category|Water rockets}} * [http://www.wra2.org/ The Water Rocket Achievement World Record Association] – International association dedicated to the construction and safe operation of water rockets and the governing body for all water rocket world records. [[Category:Toys]]