Old Sow is the largest tidal whirlpool in the Western Hemisphere , located off the southwestern shore of Deer Island , New Brunswick , Canada , and off the northeast shore of Moose Island , the principal island of Eastport, Maine .
81-532: A whirlpool is a body of rotating water produced by opposing currents or a current running into an obstacle. Small whirlpools form when a bath or a sink is draining. More powerful ones formed in seas or oceans may be called maelstroms ( / ˈ m eɪ l s t r ɒ m , - r ə m / MAYL -strom, -strəm ). Vortex is the proper term for a whirlpool that has a downdraft . In narrow ocean straits with fast flowing water, whirlpools are often caused by tides . Many stories tell of ships being sucked into
162-593: A high-visibility vest and depth gauge . The mannequin was swallowed and spat up far down current with a depth gauge reading of 262 m (860 ft) and evidence of being dragged along the bottom for a great distance. About three miles (4.8 kilometers) downstream from Niagara Falls is the Niagara Whirlpool . Located mostly in Canada and partially in the United States, the whirlpool is crossed by
243-474: A solvent ). It is vital for all known forms of life , despite not providing food energy or organic micronutrients . Its chemical formula, H 2 O , indicates that each of its molecules contains one oxygen and two hydrogen atoms , connected by covalent bonds . The hydrogen atoms are attached to the oxygen atom at an angle of 104.45°. In liquid form, H 2 O is also called "water" at standard temperature and pressure . Because Earth's environment
324-601: A 1 cm sample cell. Aquatic plants , algae , and other photosynthetic organisms can live in water up to hundreds of meters deep, because sunlight can reach them. Practically no sunlight reaches the parts of the oceans below 1,000 metres (3,300 ft) of depth. The refractive index of liquid water (1.333 at 20 °C (68 °F)) is much higher than that of air (1.0), similar to those of alkanes and ethanol , but lower than those of glycerol (1.473), benzene (1.501), carbon disulfide (1.627), and common types of glass (1.4 to 1.6). The refraction index of ice (1.31)
405-596: A diameter of approximately 250 feet (76 m), as determined by the president of the Old Sow Whirlpool Survivors' Association in 1997 by way of an aerial photograph. The photograph was calibrated using the Deer Island Point Light beacon tower of known width that was included in the photograph. Old Sow is one of five significant whirlpools worldwide ( Corryvreckan , Scotland ; Saltstraumen , Norway ; Moskstraumen , Norway; and
486-585: A gigantic circular vortex that reaches the bottom of the ocean, when in fact it is a set of currents and crosscurrents with a rate of 18 km/h (11 mph). Poe described this phenomenon in his short story " A Descent into the Maelström ", which in 1841 was the first to use the word maelstrom in the English language; in this story related to the Lofoten Maelstrom, two fishermen are swallowed by
567-481: A large amount of sediment transport that occurs on the surface of the earth. Deposition of transported sediment forms many types of sedimentary rocks , which make up the geologic record of Earth history . The water cycle (known scientifically as the hydrologic cycle) is the continuous exchange of water within the hydrosphere , between the atmosphere , soil water, surface water , groundwater, and plants. Water moves perpetually through each of these regions in
648-498: A large disaster comes from the fourteenth-century Mali Empire ruler Mansa Musa , as reported by a contemporary, Ibn Fadlallah al-Umari : The ruler who preceded me did not believe that it was impossible to reach the extremity of the ocean that encircles the earth (meaning Atlantic), and wanted to reach that (end) and obstinately persisted in the design. So he equipped two hundred boats full of men, like many others full of gold, water and victuals sufficient for several years. He ordered
729-458: A little inward from the shore can hardly getaway. I have heard a certain high nobleman of the Gauls relating that a number of ships, shattered at first by a tempest, were afterward devoured by this same Charybdis . And when one only out of all the men who had been in these ships, still breathing, swam over the waves, while the rest were dying, he came, swept by the force of the receding waters, up to
810-477: A maelstrom, although only smaller craft are actually in danger. Smaller whirlpools appear at river rapids and can be observed downstream of artificial structures such as weirs and dams. Large cataracts , such as Niagara Falls , produce strong whirlpools. Saltstraumen is a narrow strait located close to the Arctic Circle , 33 km (20 mi) south-east of the city of Bodø , Norway . It has one of
891-477: A property that is exploited by cetaceans and humans for communication and environment sensing ( sonar ). Metallic elements which are more electropositive than hydrogen, particularly the alkali metals and alkaline earth metals such as lithium , sodium , calcium , potassium and cesium displace hydrogen from water, forming hydroxides and releasing hydrogen. At high temperatures, carbon reacts with steam to form carbon monoxide and hydrogen. Hydrology
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#1732764777454972-787: A short story by Edgar Allan Poe named " A Descent into the Maelström " (1841). The second is Twenty Thousand Leagues Under the Seas (1870), a novel by Jules Verne . At the end of this novel, Captain Nemo seems to commit suicide, sending his Nautilus submarine into the Maelstrom (although in Verne's sequel Nemo and the Nautilus were seen to have survived). The "Norway maelstrom" is also mentioned in Herman Melville's Moby-Dick . In
1053-491: A squall knocks the engine out of commission, they face the whirlpool. Torquil manages to repair the engine before the tide turns, and they return to the mainland. This part of the picture uses footage Powell filmed, while tied to a mast to leave both hands free for the camera, at Corryvreckan, incorporated into scenes shot in a huge tank at the studio. In the 2007 film Pirates of the Caribbean: At World's End ,
1134-440: A structure of rigid oxygen atoms in which hydrogen atoms flowed freely. When sandwiched between layers of graphene , ice forms a square lattice. The details of the chemical nature of liquid water are not well understood; some theories suggest that its unusual behavior is due to the existence of two liquid states. Pure water is usually described as tasteless and odorless, although humans have specific sensors that can feel
1215-412: A swimming pool when the light source is sunlight reflected from the pool's white tiles. In nature, the color may also be modified from blue to green due to the presence of suspended solids or algae. In industry, near-infrared spectroscopy is used with aqueous solutions as the greater intensity of the lower overtones of water means that glass cuvettes with short path-length may be employed. To observe
1296-461: A variety of applications including high-temperature electrochemistry and as an ecologically benign solvent or catalyst in chemical reactions involving organic compounds. In Earth's mantle, it acts as a solvent during mineral formation, dissolution and deposition. The normal form of ice on the surface of Earth is ice I h , a phase that forms crystals with hexagonal symmetry . Another with cubic crystalline symmetry , ice I c , can occur in
1377-514: A whirlpool, which sucked entire ships into its fold in the narrow coast of Sicily , a disaster faced by navigators. During the 8th century, Paul the Deacon , who had lived among the Belgii, described tidal bores and the maelstrom for a Mediterranean audience unused to such violent tidal surges: Not very far from this shore... toward the western side, on which the ocean main lies open without end,
1458-977: 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 , snowboarding , and skiing . The word water comes from Old English wæter , from Proto-Germanic * watar (source also of Old Saxon watar , Old Frisian wetir , Dutch water , Old High German wazzar , German Wasser , vatn , Gothic 𐍅𐌰𐍄𐍉 ( wato )), from Proto-Indo-European * wod-or , suffixed form of root * wed- ( ' water ' ; ' wet ' ). Also cognate , through
1539-489: Is visibly blue due to absorption of light in the region c. 600–800 nm. The color can be easily observed in a glass of tap-water placed against a pure white background, in daylight. The principal absorption bands responsible for the color are overtones of the O–H stretching vibrations . The apparent intensity of the color increases with the depth of the water column, following Beer's law . This also applies, for example, with
1620-439: Is 917 kg/m (57.25 lb/cu ft), an expansion of 9%. This expansion can exert enormous pressure, bursting pipes and cracking rocks. In a lake or ocean, water at 4 °C (39 °F) sinks to the bottom, and ice forms on the surface, floating on the liquid water. This ice insulates the water below, preventing it from freezing solid. Without this protection, most aquatic organisms residing in lakes would perish during
1701-493: Is at a temperature of 273.16 K (0.01 °C; 32.02 °F) and a pressure of 611.657 pascals (0.00604 atm; 0.0887 psi); it is the lowest pressure at which liquid water can exist. Until 2019 , the triple point was used to define the Kelvin temperature scale . The water/vapor phase curve terminates at 647.096 K (373.946 °C; 705.103 °F) and 22.064 megapascals (3,200.1 psi; 217.75 atm). This
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#17327647774541782-467: Is determined to get to the Isle of Kiloran and marry her fiancé. Dangerous weather delays her crossing, and her determination becomes desperate when she realizes that she is falling in love with Torquil MacNeil ( Roger Livesey ). Against the advice of experienced folk, she offers a young fisherman a huge sum of money to take her over. At the last moment, Royal Naval Officer Torquil steps into the boat, and after
1863-428: Is greater than the repulsion between the hydrogen atoms. The O–H bond length is about 0.096 nm. Other substances have a tetrahedral molecular structure, for example methane ( CH 4 ) and hydrogen sulfide ( H 2 S ). However, oxygen is more electronegative than most other elements, so the oxygen atom has a negative partial charge while the hydrogen atoms are partially positively charged. Along with
1944-487: Is important in many geological processes. Groundwater is present in most rocks , and the pressure of this groundwater affects patterns of faulting . Water in the mantle is responsible for the melt that produces volcanoes at subduction zones . On the surface of the Earth, water is important in both chemical and physical weathering processes. Water, and to a lesser but still significant extent, ice, are also responsible for
2025-470: Is it a noble gas (and therefore is not removed from the atmosphere through chemical reactions with other elements), but comparisons between the abundances of its nine stable isotopes in the modern atmosphere reveal that the Earth lost at least one ocean of water early in its history, between the Hadean and Archean eons. Any water on Earth during the latter part of its accretion would have been disrupted by
2106-498: Is known as the critical point . At higher temperatures and pressures the liquid and vapor phases form a continuous phase called a supercritical fluid . It can be gradually compressed or expanded between gas-like and liquid-like densities; its properties (which are quite different from those of ambient water) are sensitive to density. For example, for suitable pressures and temperatures it can mix freely with nonpolar compounds , including most organic compounds . This makes it useful in
2187-413: Is lower than that of liquid water. In a water molecule, the hydrogen atoms form a 104.5° angle with the oxygen atom. The hydrogen atoms are close to two corners of a tetrahedron centered on the oxygen. At the other two corners are lone pairs of valence electrons that do not participate in the bonding. In a perfect tetrahedron, the atoms would form a 109.5° angle, but the repulsion between the lone pairs
2268-512: Is of the 1500s, Olaus Magnus , a Swedish bishop, who had stated that a maelstrom more powerful than the one written about in the Odyssey sucked in ships, which sank to the bottom of the sea, and even whales were pulled in. Pytheas , the Greek historian, also mentioned that maelstroms swallowed ships and threw them up again. The monster Charybdis of Greek mythology was later rationalized as
2349-422: Is poor at dissolving nonpolar substances. This allows it to be the " solvent of life": indeed, water as found in nature almost always includes various dissolved substances, and special steps are required to obtain chemically pure water . Water is the only common substance to exist as a solid , liquid, and gas in normal terrestrial conditions. Along with oxidane , water is one of the two official names for
2430-430: Is relatively close to water's triple point , water exists on Earth as a solid , a liquid , and a gas . It forms precipitation in the form of rain and aerosols in the form of fog . Clouds consist of 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 covers about 71% of
2511-683: Is supposedly the whirlpool depicted in Olaus Magnus's map, labeled as "Horrenda Caribdis" ( Charybdis ). The Moskstraumen is formed by the combination of powerful semi-diurnal tides and the unusual shape of the seabed , with a shallow ridge between the Moskenesøya and Værøya islands which amplifies and whirls the tidal currents. The fictional depictions of the Moskstraumen by Edgar Allan Poe , Jules Verne , and Cixin Liu describe it as
Whirlpool - Misplaced Pages Continue
2592-519: Is that very deep whirlpool of waters which we call by its familiar name "the navel of the sea". This is said to suck in the waves and spew them forth again twice every day. ... They say there is another whirlpool of this kind between the island of Britain and the province of Galicia , and with this fact the coasts of the Seine region and of Aquitaine agree, for they are filled twice a day with such sudden inundations that any one who may by chance be found only
2673-458: Is the study of the movement, distribution, and quality of water throughout the Earth. The study of the distribution of water is hydrography . The study of the distribution and movement of groundwater is hydrogeology , of glaciers is glaciology , of inland waters is limnology and distribution of oceans is oceanography . Ecological processes with hydrology are in the focus of ecohydrology . The collective mass of water found on, under, and over
2754-473: The Life of St Columba , the author, Adomnan of Iona , attributes to the saint miraculous knowledge of a particular bishop who sailed into a whirlpool off the coast of Ireland. In Adomnan's narrative, he quotes Columba saying Cólman mac Beognai has set sail to come here and is now in great danger in the surging tides of the whirlpool of Corryvreckan. Sitting in the prow, he lifts up his hands to heaven and blesses
2835-485: The Moon-forming impact (~4.5 billion years ago), which likely vaporized much of Earth's crust and upper mantle and created a rock-vapor atmosphere around the young planet. The rock vapor would have condensed within two thousand years, leaving behind hot volatiles which probably resulted in a majority carbon dioxide atmosphere with hydrogen and water vapor . Afterward, liquid water oceans may have existed despite
2916-574: The Naruto whirlpools , Japan are the others). Although the tidal currents within Western Passage surrounding Old Sow compare with faster whirlpools elsewhere, the speed of Old Sow's vortex is considerably slower than the Moskstraumen, the world's most powerful whirlpool. Tremendous water turbulence occurs locally in the greater Old Sow area, but it does not usually constitute a navigation hazard for motorized vessels with experienced operators at
2997-633: The Whirlpool Aero Car . The basin of the whirlpool is 1,700 feet (518 meters) long and 1,200 feet (365 meters) wide. Its maximum water depth is 125 feet (38 meters). Old Sow whirlpool is located between Deer Island, New Brunswick , Canada, and Moose Island, Eastport, Maine , USA. It is given the epithet "pig-like" as it makes a screeching noise when the vortex is at its full fury and reaches speeds of as much as 27.6 km/h (17.1 mph). The smaller whirlpools around this Old Sow are known as "Piglets". The Naruto whirlpools are located in
3078-432: The elements hydrogen and oxygen by passing an electric current through it—a process called electrolysis . The decomposition requires more energy input than the heat released by the inverse process (285.8 kJ/ mol , or 15.9 MJ/kg). Liquid water can be assumed to be incompressible for most purposes: its compressibility ranges from 4.4 to 5.1 × 10 Pa in ordinary conditions. Even in oceans at 4 km depth, where
3159-529: The molar volumes of the liquid and solid phases, and L f {\displaystyle L_{\text{f}}} is the molar latent heat of melting. In most substances, the volume increases when melting occurs, so the melting temperature increases with pressure. However, because ice is less dense than water, the melting temperature decreases. In glaciers, pressure melting can occur under sufficiently thick volumes of ice, resulting in subglacial lakes . The Clausius-Clapeyron relation also applies to
3240-493: The water cycle consisting of the following transfer processes: Old Sow whirlpool The whirlpool is caused by local bathymetry and a 20-foot (6.1 m) tidal range where waters exchange between Passamaquoddy Bay and the Bay of Fundy , combined with the topography of the location's sea floor at the confluence of the numerous local currents through channels and over small sea mounts. The whirlpools form in an area with
3321-444: The Earth was younger and less massive , water would have been lost to space more easily. Lighter elements like hydrogen and helium are expected to leak from the atmosphere continually, but isotopic ratios of heavier noble gases in the modern atmosphere suggest that even the heavier elements in the early atmosphere were subject to significant losses. In particular, xenon is useful for calculations of water loss over time. Not only
Whirlpool - Misplaced Pages Continue
3402-513: The Earth's surface, with seas and oceans making up most of the water volume (about 96.5%). 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 (consisting of ice and liquid water suspended in air), and precipitation (0.001%). Water moves continually through the water cycle of evaporation , transpiration ( evapotranspiration ), condensation , precipitation, and runoff , usually reaching
3483-538: The Indo-European root, with Greek ύδωρ ( ýdor ; from Ancient Greek ὕδωρ ( hýdōr ), whence English ' hydro- ' ), Russian вода́ ( vodá ), Irish uisce , and Albanian ujë . One factor in estimating when water appeared on Earth is that water is continually being lost to space. H 2 O molecules in the atmosphere are broken up by photolysis , and the resulting free hydrogen atoms can sometimes escape Earth's gravitational pull. When
3564-590: The Naruto Strait near Awaji Island in Japan, which have speeds of 26 km/h (16 mph). Skookumchuck Narrows is a tidal rapids that develops whirlpools, on the Sunshine Coast , British Columbia , Canada with speeds of the current exceeding 30 km/h (19 mph). French Pass ( Te Aumiti ) is a narrow and treacherous stretch of water that separates D'Urville Island from the north end of
3645-553: The South Island of New Zealand. In 2000 a whirlpool there caught student divers, resulting in fatalities. A short-lived whirlpool sucked in a portion of the 1,300-acre (530 ha) Lake Peigneur in Louisiana, United States after a drilling mishap on November 20, 1980. This was not a naturally occurring whirlpool, but a disaster caused by underwater drillers breaking through the roof of a salt mine. The lake then drained into
3726-577: The bent structure, this gives the molecule an electrical dipole moment and it is classified as a polar molecule . Water is a good polar solvent , dissolving many salts and hydrophilic organic molecules such as sugars and simple alcohols such as ethanol . Water also dissolves many gases, such as oxygen and carbon dioxide —the latter giving the fizz of carbonated beverages, sparkling wines and beers. In addition, many substances in living organisms, such as proteins , DNA and polysaccharides , are dissolved in water. The interactions between water and
3807-537: The boiling point, but with the liquid/gas transition the vapor phase has a much lower density than the liquid phase, so the boiling point increases with pressure. Water can remain in a liquid state at high temperatures in the deep ocean or underground. For example, temperatures exceed 205 °C (401 °F) in Old Faithful , a geyser in Yellowstone National Park . In hydrothermal vents ,
3888-785: The chemical compound H 2 O ; it is also the liquid phase of H 2 O . The other two common states of matter of water are the solid phase, ice , and the gaseous phase, water vapor or steam . The addition or removal of heat can cause phase transitions : freezing (water to ice), melting (ice to water), vaporization (water to vapor), condensation (vapor to water), sublimation (ice to vapor) and deposition (vapor to ice). Water differs from most liquids in that it becomes less dense as it freezes. In 1 atm pressure, it reaches its maximum density of 999.972 kg/m (62.4262 lb/cu ft) at 3.98 °C (39.16 °F), or almost 1,000 kg/m (62.43 lb/cu ft) at almost 4 °C (39 °F). The density of ice
3969-404: The chief (admiral) not to return until they had reached the extremity of the ocean, or if they had exhausted the provisions and the water. They set out. Their absence extended over a long period, and, at last, only one boat returned. On our questioning, the captain said: 'Prince, we have navigated for a long time, until we saw in the midst of the ocean as if a big river was flowing violently. My boat
4050-433: The desired result. Conversely, a pressure cooker can be used to decrease cooking times by raising the boiling temperature. In a vacuum, water will boil at room temperature. On a pressure/temperature phase diagram (see figure), there are curves separating solid from vapor, vapor from liquid, and liquid from solid. These meet at a single point called the triple point , where all three phases can coexist. The triple point
4131-400: The edge of that most frightful abyss. And when now he beheld yawning before him the deep chaos whose end he could not see, and half dead from very fear, expected to be hurled into it, suddenly in a way that he could not have hoped he was cast upon a certain rock and sat him down. Three of the most notable literary references to the Lofoten Maelstrom date from the nineteenth century. The first is
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#17327647774544212-523: The final battle between the Black Pearl and the Flying Dutchman takes place with both ships sailing inside a giant whirlpool which appears to be over a kilometer wide and several hundred meters deep. The fantasy novels Eldest and The Bellmaker (otherwise unconnected) both feature a scene where the protagonists' ship escapes pursuit by successfully navigating a massive whirlpool, while
4293-486: The force of gravity . This property is relied upon by all vascular plants , such as trees. Water is a weak solution of hydronium hydroxide—there is an equilibrium 2H 2 O ⇌ H 3 O + OH , in combination with solvation of the resulting hydronium and hydroxide ions. Pure water has a low electrical conductivity , which increases with the dissolution of a small amount of ionic material such as common salt . Liquid water can be split into
4374-450: The fundamental stretching absorption spectrum of water or of an aqueous solution in the region around 3,500 cm (2.85 μm) a path length of about 25 μm is needed. Also, the cuvette must be both transparent around 3500 cm and insoluble in water; calcium fluoride is one material that is in common use for the cuvette windows with aqueous solutions. The Raman-active fundamental vibrations may be observed with, for example,
4455-464: The helm; however, small craft—especially vessels with keels (sailboats) and human-powered vessels—are warned to avoid these waters when the tide is running. Besides Old Sow and its numerous "piglets" (small and medium whirlpools surrounding Old Sow), other area phenomena include standing waves, upwellings (that on rare occasion may even spout several feet into the air), and 10–17 feet (3.0–5.2 m) deep or more, circular and trench-shaped depressions in
4536-411: The lake. At the time of the whirlpool's formation, the lake was being drained after reaching its highest level ever. The Army Corps of Engineers , which operates the dam and lake, expected that the whirlpool would last until the lake reached normal seasonal levels by late July. Powerful whirlpools have killed unlucky seafarers, but their power tends to be exaggerated by laymen. One of the few reports of
4617-416: The liquid is known as boiling ). Sublimation and deposition also occur on surfaces. For example, frost is deposited on cold surfaces while snowflakes form by deposition on an aerosol particle or ice nucleus. In the process of freeze-drying , a food is frozen and then stored at low pressure so the ice on its surface sublimates. The melting and boiling points depend on pressure. A good approximation for
4698-753: The liquid or solid state can form up to four hydrogen bonds with neighboring molecules. Hydrogen bonds are about ten times as strong as the Van der Waals force that attracts molecules to each other in most liquids. This is the reason why the melting and boiling points of water are much higher than those of other analogous compounds like hydrogen sulfide. They also explain its exceptionally high specific heat capacity (about 4.2 J /(g·K)), heat of fusion (about 333 J/g), heat of vaporization ( 2257 J/g ), and thermal conductivity (between 0.561 and 0.679 W/(m·K)). These properties make water more effective at moderating Earth's climate , by storing heat and transporting it between
4779-553: The maelstrom while one survives. The Corryvreckan is a narrow strait between the islands of Jura and Scarba , in Argyll and Bute , on the northern side of the Gulf of Corryvreckan , Scotland . It is the third-largest whirlpool in the world. Flood tides and inflow from the Firth of Lorne to the west can drive the waters of Corryvreckan to waves of more than 9 metres (30 ft), and
4860-406: The meaning 'grinding current' or literally 'mill-stream', in the sense of milling (grinding) grain. Water Water is an inorganic compound with the chemical formula H 2 O . It is a transparent, tasteless, odorless, and nearly colorless chemical substance . It is the main constituent of Earth 's hydrosphere and the fluids of all known living organisms (in which it acts as
4941-411: The mine until the mine filled and the water levels equalized, but the formerly 10-foot (3.0 m) deep lake was now 1,300 feet (400 m) deep. This mishap caused a sinkhole, and in the end, resulted in the destruction of five houses, the loss of nineteen barges and eight tug boats, oil rigs, a mobile home, trees, acres of land, and most of a botanical garden. The adjacent settlement of Jefferson Island
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#17327647774545022-418: The oceans and the atmosphere. The hydrogen bonds of water are around 23 kJ/mol (compared to a covalent O-H bond at 492 kJ/mol). Of this, it is estimated that 90% is attributable to electrostatics, while the remaining 10% is partially covalent. These bonds are the cause of water's high surface tension and capillary forces. The capillary action refers to the tendency of water to move up a narrow tube against
5103-538: The oceans may have always been on the Earth since the beginning of the planet's formation . Water ( H 2 O ) is a polar inorganic compound . At room temperature it is a tasteless and odorless liquid , nearly colorless with a hint of blue . The simplest hydrogen chalcogenide , it is by far the most studied chemical compound and is sometimes described as the "universal solvent" for its ability to dissolve more substances than any other liquid, though it
5184-402: The presence of water in their mouths, and frogs are known to be able to smell it. However, water from ordinary sources (including mineral water ) usually has many dissolved substances that may give it varying tastes and odors. Humans and other animals have developed senses that enable them to evaluate the potability of water in order to avoid water that is too salty or putrid . Pure water
5265-437: The pressure is 400 atm, water suffers only a 1.8% decrease in volume. The viscosity of water is about 10 Pa· s or 0.01 poise at 20 °C (68 °F), and the speed of sound in liquid water ranges between 1,400 and 1,540 metres per second (4,600 and 5,100 ft/s) depending on temperature. Sound travels long distances in water with little attenuation , especially at low frequencies (roughly 0.03 dB /km for 1 k Hz ),
5346-566: The pursuing vessel fails to do so and is dragged under. One of the earliest uses in English of the Scandinavian word malström or malstrøm was by Edgar Allan Poe in his short story " A Descent into the Maelström " (1841). The Nordic word itself is derived from the Dutch word maelstrom ( pronounced [ˈmaːlstroːm] ; modern spelling maalstroom ), from malen ('to mill' or 'to grind') and stroom ('stream'), to form
5427-587: The rate of change of the melting temperature with pressure is given by the Clausius–Clapeyron relation : d T d P = T ( v L − v S ) L f {\displaystyle {\frac {dT}{dP}}={\frac {T\left(v_{\text{L}}-v_{\text{S}}\right)}{L_{\text{f}}}}} where v L {\displaystyle v_{\text{L}}} and v S {\displaystyle v_{\text{S}}} are
5508-568: The roar of the resulting maelstrom, which reaches speeds of 18 km/h (11 mph), can be heard 16 km (10 mi) away. Though it was classified initially as non-navigable by the Royal Navy it was later categorized as "extremely dangerous". A documentary team from Scottish independent producers Northlight Productions once threw a mannequin into the Corryvreckan ("the Hag") with
5589-404: The sea. Water plays an important role in the world economy . Approximately 70% of the fresh water used by humans goes to agriculture . Fishing in salt and fresh water bodies has been, and continues to be, a major source of food for many parts of the world, providing 6.5% of global protein. Much of the long-distance trade of commodities (such as oil, natural gas, and manufactured products)
5670-562: The strongest tidal currents in the world. Whirlpools up to 10 metres (33 ft) in diameter and 5 metres (16 ft) in depth are formed when the current is at its strongest. Moskstraumen or Moske-stroom is an unusual system of whirlpools in the open seas in the Lofoten Islands off the Norwegian coast . It is the second strongest whirlpool in the world with flow currents reaching speeds as high as 32 km/h (20 mph). This
5751-413: The subunits of these biomacromolecules shape protein folding , DNA base pairing , and other phenomena crucial to life ( hydrophobic effect ). Many organic substances (such as fats and oils and alkanes ) are hydrophobic , that is, insoluble in water. Many inorganic substances are insoluble too, including most metal oxides , sulfides , and silicates . Because of its polarity, a molecule of water in
5832-488: The surface of a planet is called the hydrosphere . Earth's approximate water volume (the total water supply of the world) is 1.386 billion cubic kilometres (333 million cubic miles). Liquid water is found in bodies of water , such as an ocean, sea, lake, river, stream, canal , pond, or puddle . The majority of water on Earth is seawater . Water is also present in the atmosphere in solid, liquid, and vapor states. It also exists as groundwater in aquifers . Water
5913-537: The surface temperature of 230 °C (446 °F) due to the increased atmospheric pressure of the CO 2 atmosphere. As the cooling continued, most CO 2 was removed from the atmosphere by subduction and dissolution in ocean water, but levels oscillated wildly as new surface and mantle cycles appeared. Geological evidence also helps constrain the time frame for liquid water existing on Earth. A sample of pillow basalt (a type of rock formed during an underwater eruption)
5994-403: The temperature can exceed 400 °C (752 °F). At sea level , the boiling point of water is 100 °C (212 °F). As atmospheric pressure decreases with altitude, the boiling point decreases by 1 °C every 274 meters. High-altitude cooking takes longer than sea-level cooking. For example, at 1,524 metres (5,000 ft), cooking time must be increased by a fourth to achieve
6075-453: The turbulent, terrible seas. Yet the Lord terrifies him in this way, not so that the ship in which he sits should be overwhelmed and wrecked by the waves, but rather to rouse him to pray more fervently that he may sail through the peril and reach us here. The Corryvreckan whirlpool plays a key role in the 1945 Powell and Pressburger film I Know Where I'm Going! . Joan Webster ( Wendy Hiller )
6156-458: The upper atmosphere. As the pressure increases, ice forms other crystal structures . As of 2024, twenty have been experimentally confirmed and several more are predicted theoretically. The eighteenth form of ice, ice XVIII , a face-centred-cubic, superionic ice phase, was discovered when a droplet of water was subject to a shock wave that raised the water's pressure to millions of atmospheres and its temperature to thousands of degrees, resulting in
6237-518: The water. The failed Passamaquoddy Tidal Power Project/"Quoddy Dam" Project saw a series of tidal dikes constructed during the 1930s to connect Moose Island ( Eastport, Maine ) to Carlow Island (in Eastport), Carlow Island to Pleasant Point and to connect Treat Island (in Eastport) to Dudley Island (in Lubec, Maine ). The changes in local water flow from the dikes reportedly reduced predictability of
6318-441: The winter. Water is a diamagnetic material. Though interaction is weak, with superconducting magnets it can attain a notable interaction. At a pressure of one atmosphere (atm), ice melts or water freezes (solidifies) at 0 °C (32 °F) and water boils or vapor condenses at 100 °C (212 °F). However, even below the boiling point, water can change to vapor at its surface by evaporation (vaporization throughout
6399-809: Was recovered from the Isua Greenstone Belt and provides evidence that water existed on Earth 3.8 billion years ago. In the Nuvvuagittuq Greenstone Belt , Quebec, Canada, rocks dated at 3.8 billion years old by one study and 4.28 billion years old by another show evidence of the presence of water at these ages. If oceans existed earlier than this, any geological evidence has yet to be discovered (which may be because such potential evidence has been destroyed by geological processes like crustal recycling ). More recently, in August 2020, researchers reported that sufficient water to fill
6480-523: Was reduced in area by 10%. A crater 0.5 miles (0.8 km) across was left behind. Nine of the barges, which had sunk, later resurfaced after the whirlpool subsided. A more recent example of an artificial whirlpool that received significant media coverage occurred in early June 2015, when an intake vortex formed in Lake Texoma , on the Oklahoma–Texas border, near the floodgates of the dam that forms
6561-594: Was the last one; others were ahead of me. As soon as any of them reached this place, it drowned in the whirlpool and never came out. I sailed backward to escape this current.' Tales like those by Paul the Deacon , Edgar Allan Poe , and Jules Verne are entirely fictional. However, temporary whirlpools caused by major engineering disasters, such as the Lake Peigneur disaster, have been recorded as capable of submerging medium-sized watercraft such as barges and tugboats. Besides Poe and Verne, another literary source
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