Nature - Water - online puzzles

Water

Water is an inorganic compound with the chemical formula H2O. It is a transparent, tasteless, odorless, and nearly colorless chemical substance, and it is the main constituent of Earth's hydrosphere and the fluids of all known living organisms (in which it acts as a solvent). It is vital for all known forms of life, despite not providing food energy, or organic micronutrients. Its chemical formula, H2O, 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°. "Water" is also the name of the liquid state of H2O at standard temperature and pressure.

Because Earth's environment is relatively close to water's triple point, water exists on Earth as a solid, liquid, and 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 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 the sea.

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 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) 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.

Bora 1 online puzzlevolcano puzzle online from photoBlumen online puzzlePremière neige1 puzzle online from photoCliff on the Arabian Sea puzzle online from photoTiger puzzle online from photolotus online puzzlewater step puzzle online from photoTirex online puzzleImages of  Australia 4 puzzle online from photoGiant Mountains in winter puzzle online from photoEdinburgh Botanical Garden - 9 online puzzleGuess the Animal online puzzleTyrannosaurus Rex online puzzleAEEEA puzzle online from photoLandscape online puzzleit' a cat online puzzlechameleon online puzzleBird of Prey puzzle online from photoHello online puzzleKilauea puzzle online from photoMountain landscape puzzle online from photoTunnel with greenery puzzle online from photoLake Coeur d' Alene puzzle online from photo
Ram on cliffs puzzle online from photoBeach chairs and umbrella puzzle online from phototurtle bay online puzzleYosemite landscapes puzzle online from photoBraies Lake, Dolomites, Trentino Alto Adige, Italy online puzzlescenic view of irish coastline,dingle, in morning light online puzzlecliff atop palos de santa cruz online puzzleTre Cime di Lavaredo National park online puzzleBeautiful waterfall puzzle online from photoThe alpine lake Seefeldsee online puzzleSakrisoy port online puzzlepeaceful atmosphere online puzzleNature Background puzzle online from photoOcean depths puzzle online from photoAlaska Trip puzzle online from photoLake Front online puzzleпарк хибия puzzle online from photoFoliage and Pond puzzle online from photoCavernous Scenery In Green online puzzleThe Waterway puzzle online from photoMountain and River puzzle online from photoGreen Tower online puzzleRaw beauty online puzzleCoyote Canyons Arizona puzzle online from photo
Copyright 2024 www.epuzzle.info All rights reserved.