Liquid (water freezing ice, solidification) become solid (frozen clothes dry, sublimation) become gaseous (water vapor in the cold condensation, liquefaction) become liquid?
Liquid (water evaporates) to become Gaseous (gas in the rapid cold) to become solid (ice melts) to become liquid?
Extended information:
The water cycle is the process by which water in different parts of the Earth, by absorbing the sun's energy, changes its state and travels to another part of the Earth. place on the Earth. For example, water on the ground is evaporated by the sun to become water vapor in the air.
The states of water on Earth include solid, liquid, and gas. And most of the water in the Earth exists in the atmosphere, on the ground, under the earth, in lakes, rivers and oceans. Water moves from one place to another through some physical effects, such as: evaporation, precipitation, infiltration, the flow of the surface and the underground flow. For example, water moves from rivers to oceans.
The various forms of water bodies on the earth's surface are constantly transforming into each other, and the process of constant circulation of water in gaseous, liquid and solid forms among the land, ocean and atmosphere is the water cycle. Water on the Earth's surface is transformed and transported on the surface and in its neighboring spaces (troposphere and shallow subsurface) through morphological transformations.
Causes of the water cycle
The external causes of the water cycle are solar radiation and gravity, which provide the water cycle with the physical state of water changes and energy of movement: the internal cause of the formation of the water cycle is water in the usual environmental conditions of the gaseous, liquid, and solid forms of the three forms of the characteristics of the easy transformation of each other.
Precipitation, evaporation and runoff are the three most important links in the water cycle process, and the water cycle formed by these three links determines the global water balance and the total amount of water resources in a region.
Groundwater and surface water
Groundwater--organic matter and microbial contamination is less, while ions are dissolved more, usually higher hardness, distillation of boiling water is easy to scale; sometimes manganese and fluoride ions exceed the standard, and can not meet the needs of production of water for life.
Surface water - more organic matter and microbial contamination than groundwater, if the place is a limestone area, its surface water often also has a greater hardness, such as Deyang, Sichuan, Mianyang, Guangyuan, Aba and other areas.
Raw water and water purification
Raw water - usually refers to the water treatment equipment, such as water, such as commonly used city water, suburban groundwater, wild surface water, etc., often to the TDS value (the content of total dissolved solids in the water) to detect the quality of its water, China's city water TDS value is usually 100 ~ 400ppm.
Purified water - raw water is called purified water after treatment in water treatment facilities.
Pure water and distilled water
Pure water - raw water after reverse osmosis and sterilization devices and other sets of water treatment facilities, removing most of the inorganic salt ions in the raw water, microorganisms and organic impurities, you can directly drink the pure water.
Distilled water - pure water prepared by distillation, usually not for drinking.
Purified water and water for injection
Purified water - pure water for the pharmaceutical industry, conductivity requirements <2μs/cm.
Water for injection - purified water by multi-effect distillation, ultrafiltration and purification to remove the pyrogen. pyrogen can be prepared after the injection of water.
Reference; Baidu Encyclopedia-Water Cycle