On+or+in+the+water
21Water cycle — The Earth s water is always in movement, and the water cycle, also known as the hydrologic cycle, describes the continuous movement of water on, above, and below the surface of the Earth. Since the water cycle is truly a cycle, there is no… …
22Water supply — is the process of self provision or provision by third parties of water of various qualities to different users. Irrigation is covered separately. Global access to waterIn 2004 about 3.5 billion people worldwide (54% of the global population) had …
23Water privatization — is a short hand for private sector participation in the provision of water services and sanitation, although more rarely it refers to privatization of water resources themselves. Because water services are seen as such a key public service,… …
24Water Tribe — The Water Tribe is a collective term for a nation of people in the fictional universe of the Nickelodeon animated television series . One of the series four nations, the Water Tribe is divided mainly into two nation states: the Southern Water… …
25Water (classical element) — Water has been important to all peoples of the earth, and it is rich in spiritual tradition.Greek and Roman tradition Water is one of the four classical elements in ancient Greek philosophy and science. It was commonly associated with the… …
26Water skiing — is a sport where an individual (or more than one individual) is pulled behind a motor boat or a cable ski installation on a body of water wearing one or more skis. The surface area of the ski (or skis) keeps the person skimming on the surface of… …
27Water cure — is a form of water torture in which the victim is forced to drink large quantities of water in a short time, resulting in gastric distension, water intoxication, and possibly death.cite book|title=Oxford English Dictionary|quote=In the… …
28Water hammer — (or, more generally, fluid hammer) is a pressure surge or wave resulting when a fluid in motion is forced to stop or change direction suddenly (Momentum Change). Water hammer commonly occurs when a valve is closed suddenly at an end of a pipeline …
29Water conservation — refers to reducing the use of water.The goals of water conservation efforts include: * Sustainability To ensure availability for future generations, the withdrawal of fresh water from an ecosystem should not exceed its natural replacement rate. * …
30Water activity — or aw is a measurement of the energy status of the water in a system. It is defined as the vapor pressure of water above a sample divided by that of pure water at the same temperature; therefore, pure distilled water has a water activity of… …
