Question

解釋水蒸氣

I told in Chinese
explain water vapour ​

Answer 1

Answer:

Water vapor, water vapour or aqueous vapor is the gaseous phase of water. It is one state ofwater within the hydrosphere. Water vapor can be produced from the evaporation or boiling of liquidwater or from the sublimation of ice. Water vaporis transparent, like most constituents of the atmosphere.

Answer 2

解釋水蒸氣 Means explain water vapor

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Water vapour is the most abundant greenhouse gas in the atmosphere, both by weight and by volume (1), (2). Water vapour is also an effective greenhouse gas, as it does absorb longwave radiation and radiates it back to the surface, thus contributing to warming.Water vapour is water in gaseous instead of liquid form. It can be formed either through a process of evaporation or sublimation. Unlike clouds, fog, or mist which are simply suspended particles of liquid water in the air, water vapour itself cannot be seen because it is in gaseous form.[2]Water vapour in the atmosphere is often below its boiling point. When water is boiled the water evaporates much faster and makes steam. Steam often has droplets of water, which is what is seen water is boiling. Since both water droplets and water vapour are present, this is called wet steam (also called wet vapour). As the mixture gets hotter, the water droplets go away and it becomes dry steam (also called dry vapour).[3] Power plants use water vapour in the form of steam (dry is better, but wet is used too) as a working fluid to turn their turbines to make electricity.

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Water vapour is important for a number of different reasons, but its presence in the atmosphere is one of the most important. Water vapour is present within the atmosphere in varying amounts but is a vital component of the hydrologic cycle. In the atmosphere, water vapour can exist in trace amounts or even make up as much as 4% of the atmosphere. This concentration depends largely on where the water vapour levels are measured. On average, the value of water vapour in the atmosphere is 2-3%. In arid or very cold locations - such as polar regions - the amount of water vapour in the air is much lower.[4]

Even on a clear day, water vapour exists in the atmosphere as an invisible gas - unlike clouds which are droplets of liquid water that can be seen. If the conditions are right, water vapour in the air can collect on small particles of dust, salt, or smoke in the air to form small droplets. These droplets gradually increase in size and over time become various forms of precipitation. Since water vapour is so prominent in the atmosphere and forms precipitation, water vapour is a major component of the hydrologic cycle. When water holding areas are heated by the Sun, some of the water being held evaporates and becomes vapour, powering the cycle.[5]

In addition to being created by evaporating water, plants are capable of producing water vapour through a process of transpiration.

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