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Water is an inorganic, transparent, tasteless, odorless, and nearly colorless chemical substance, which is the main constituent of Earth's hydrosphere and the fluids of all known living organisms. It is vital for all known forms of life, even though it provides no calories or organic nutrients. Its chemical formula is H2O, meaning that each of its molecules contains one oxygen and two hydrogen atoms, connected by covalent bonds.Two hydrogen atoms are attached to one oxygen atom at an angle of 104.45°.

"Water" is the name of the liquid state of H2O at standard ambient temperature and pressure. It forms precipitation in the form of rain and aerosols in the form of fog. Clouds are formed from suspended droplets of water and ice, its solid state. When finely divided, crystalline ice may precipitate in the form of snow. The gaseous state of water is steam or water vapor. Water moves continually through the water cycle of evaporation, transpiration (evapotranspiration), condensation, precipitation, and runoff, usually reaching the sea.

Water covers 71% of the Earth's surface, mostly in seas and oceans. Small portions of water occur as groundwater (1.7%), in the glaciers and the ice caps of Antarctica and Greenland (1.7%), and in the air as vapor, clouds (formed of ice and liquid water suspended in air), and precipitation (0.001%).

Water plays an important role in the world economy. Approximately 70% of the freshwater used by humans goes to agriculture. Fishing in salt and fresh water bodies is a major source of food for many parts of the world. Much of the long-distance trade of commodities (such as oil, natural gas, and manufactured products) is transported by boats through seas, rivers, lakes, and canals. Large quantities of water, ice, and steam are used for cooling and heating, in industry and homes. Water is an excellent solvent for a wide variety of substances both mineral and organic; as such it is widely used in industrial processes, and in cooking and washing. Water, ice and snow are also central to many sports and other forms of entertainment, such as swimming, pleasure boating, boat racing, surfing, sport fishing, diving, ice skating and skiing.

Water Media

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Bathing ...by Beechams

Bathing ...by Beechams

Dressed in the popular ''sailor suits'', the children in this photograph seem to be enjoying themselves in the waves. Behind them are the wheeled bathing huts, which judging by the large advertising boards tha... more

Aerial view of the procession of mail ships, Maloja, Orford, Nieuw Zeeland and Manunda at the official opening celebrations of the Sydney Harbour Bridge, 19 March, 1932

Aerial view of the procession of mail ships, Maloja, Orford, Nieuw Zee...

Searle, E. W. (Edward William)..Part of the collection: Official air views of the opening celebrations of the Sydney Harbour Bridge, 19 March, 1932.; Title devised by cataloguer based on accompanying documentat... more

Modeling a bathing suit at Villa Vizcaya - Miami

Modeling a bathing suit at Villa Vizcaya - Miami

Persistent URL: floridamemory.com/items/show/46856 ( http://floridamemory.com/items/show/46856 ) ..Local call number: RP06108..Title: Modeling a bathing suit at Villa Vizcaya - Miami..Date: ca 1960..Physical de... more

Puerto Rico

Puerto Rico

Title: Puerto Rico . .Creator: Robert Yarnall Richie ..Date: 1939..Place: Puerto Rico..Physical Description: 1 transparency: film, color; 10 x 13 cm. . .File: ag1982_0234_2063_K_14_sm_opt.jpg . ... more

Young woman modeling a two-piece swim suit in Tampa, Florida

Young woman modeling a two-piece swim suit in Tampa, Florida

Persistent URL: www.floridamemory.com/items/show/66749 ( http://www.floridamemory.com/items/show/66749 ) ..Local call number: C006224..Title: Young woman modeling a two-piece swim suit in Tampa, Florida..Date: ... more

Nora Carrol and Lois Duncan Steinmetz: Sarasota, Florida

Nora Carrol and Lois Duncan Steinmetz: Sarasota, Florida

Local call number: JJS0372B..Title: Nora Carrol and Lois Duncan Steinmetz: Sarasota, Florida..Date: November 17, 1948..General Note: Taken for Collier's at Sarasota Jungle Gardens. ..Physical descrip: 1 transpa... more

Lois Duncan Steinmetz gazing at the Suwannee River

Lois Duncan Steinmetz gazing at the Suwannee River

Local call number: JJS0379..Title: Lois Duncan Steinmetz gazing at the Suwannee River..Date: 1949..Physical descrip: 1 transparency - col. - 5 x 4 in...Series Title: Joseph Janney Steinmetz Collection ( http://... more

Nora Carrol and Lois Duncan Steinmetz: Sarasota, Florida

Nora Carrol and Lois Duncan Steinmetz: Sarasota, Florida

Local call number: JJS0202..Title: Nora Carrol and Lois Duncan Steinmetz: Sarasota, Florida..Date: November 1949..Accompanying Note: "Fill-in shots done on Cover-girl sequence for Collier's."..Physical descrip:... more

Lois Duncan Steinmetz (left) and Polly Gaines in a motorboat: Sarasota, Florida

Lois Duncan Steinmetz (left) and Polly Gaines in a motorboat: Sarasota...

Local call number: JJS0214..Title: Lois Duncan Steinmetz (left) and Polly Gaines in a motorboat: Sarasota, Florida..Date: 1950..Physical descrip: 1 transparency - col. - 4 x 5 in...Series Title: Joseph Janney S... more

The Pinnevik bathe in Lysekil, Bohuslän, Sweden

The Pinnevik bathe in Lysekil, Bohuslän, Sweden

Caravans at the Pinnevik bathe in Lysekil. The car furthest to the left is a 1951 Chevrolet. ..Husvagnar vid Pinneviksbadet i Lysekil. Bilen längst till vänster är en Chevrolet 1951. ..Parish (socken): Lysekil ... more

[Statue of Liberty and Lighted Brooklyn Bridge]

[Statue of Liberty and Lighted Brooklyn Bridge]

Title: [Statue of Liberty and Lighted Brooklyn Bridge]..Creator: Robert Yarnall Richie, 1908-1984..Date: November 9, 1965..Place: New York Harbor, Manhattan, New York..Part Of: Robert Yarnall Richie photograph ... more

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