Water is a chemical substance with the chemical formula H2O. A water molecule contains one oxygen and two hydrogen atoms connected by covalent bonds. Water is a liquid at temperatures above 0 °C (273.15 K, 32 °F) at sea level, but it often co-exists on Earth with its solid state, ice, and gaseous state (water vapor or steam). Water also exists in a liquid crystal state near hydrophilic surfaces.
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Some articles on water:
... turn of the 20th century, synchronized swimming was known as water ballet ... theatres of London or Glasgow which were equipped with huge on-stage water tanks for the purpose ... with various diving actions and stunts in the water, Katherine Curtis started one of the first water ballet clubs at the University of Chicago, where the team began ...
... as the volume of one kilogram of pure water at 4 °C and 760 millimetres of mercury pressure ... at Sèvres in France and was intended to be of the same mass as the 1 litre of water referred to above ... Additionally, the mass-volume relationship of water (as with any fluid) depends on temperature, pressure, purity, and isotopic uniformity ...
... Water is used in literature as a symbol of purification ... Sherlock Holmes held that "From a drop of water, a logician could infer the possibility of an Atlantic or a Niagara without having seen or heard of one or the other." ...
... hydrogel consisting of fine granular material (such as sand or silt), clay, and water ... When water in the sand cannot escape, it creates liquefied soil that loses strength and cannot support weight ... Quicksand can be formed in standing water or in upwards flowing water (as from an artesian spring) ...
... may affect ecosystems, waterways, sewer and water supply systems, foundations, and so on ... force 1 to 9 million US gallons (34,000 m3) of water mixed with a variety of chemicals through the wellbore casing into the shale ... The high pressure water breaks up or "fracks" the shale, which releases the trapped gas ...
More definitions of "water":
- (verb): Supply with water, as with channels or ditches or streams.
Example: "Water the fields"
- (noun): Binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent.
- (noun): The part of the earth's surface covered with water (such as a river or lake or ocean).
Example: "They were sitting by the water's edge"
Synonyms: body of water
- (noun): Facility that provides a source of water.
Example: "The town debated the purification of the water supply"; "first you have to cut off the water"
Synonyms: water system, water supply
- (noun): Once thought to be one of four elements composing the universe (Empedocles).
- (verb): Provide with water.
Example: "We watered the buffalo"
- (noun): A fluid necessary for the life of most animals and plants.
Example: "He asked for a drink of water"
- (verb): Fill with tears.
Example: "His eyes were watering"
Famous quotes containing the word water:
“Man is but a reed, the feeblest one in nature; but he is a thinking reed. The entire universe need not arm itself to crush hima vapor, a drop of water suffices to kill him. But if the universe were to crush him, man would still be nobler than that which killed him, because he knows that he dies and the advantage which the universe has over him; the universe knows nothing of this.”
—Blaise Pascal (16231662)
“If theres water in the big rivers, the small rivers will be full.”
“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 Naturewere Man as unerring in his judgments as Nature.”
—Henry Wadsworth Longfellow (18071882)