Forms of water

Snow consists of individual ice crystals that grow while suspended in the atmosphere—usually within clouds—and then fall, accumulating on the ground where they undergo further changes. It consists of frozen crystalline water throughout its life cycle, starting when, under suitable conditions, the ice crystals form in the atmosphere, increase to millimeter size, precipitate and accumulate on surfaces, then metamorphose in place, and ultimately melt, slide, or sublimate away.

continuous movement of water on, above and below the surface of the Earth

gaseous phase of water; unlike other forms of water, water vapor is invisible

chemical compound

thumb|Liquid phase eruption of Castle Geyser in [[Yellowstone Park]]

overview about physical and chemical properties of pure water

water that has a high mineral content

chemical compound

thumb|Slush on a window

Polywater was a hypothesized polymerized form of water that was the subject of much scientific controversy during the late 1960s, first described by Soviet scientist Nikolai Fedyakin. By 1969 the popular press had taken notice of Western attempts to recreate the substance and sparked fears of a "polywater gap" between the United States and Soviet Union. Increased press attention also brought with it increased scientific attention, and as early as 1970 doubts about its authenticity were being circulated. By 1973 it was found to be illusory, being just water with any number of common compounds c

sea ice loss observed in recent decades in the Arctic Ocean

chemical compound

sea ice of the Southern Ocean

synchronization between water and energy movements within Earth's climate system

two water molecules held together by a hydrogen bond; the simplest water cluster