Water vapor

For the natural environment water vapor is of great importance. It is present in the atmosphere used in the art, is an integral part of the process of origin and development of life on Earth.

In physics textbooks it is stated that water vapor – the gaseous state of water. It can be observed by anyone, putting the kettle on the fire. After some time out of his nose is starting to pull a jet of steam. Due to this phenomenon the fact that water can be different, as determined by the physics of aggregate States – gaseous, solid, liquid. The following properties of water explains its comprehensive presence on the Ground. On the surface – liquid and solid state in the atmosphere – gaseous.

This property of water and its gradual transition to different States create the water cycle in nature. The liquid evaporates from the surface, rises into the atmosphere, is transferred to another place in the form of water vapor and it falls as rain, providing the necessary moisture to new locations.

In fact, works as a kind of steam engine, source of energy which is the Sun. When the process steam further heats the planet due to the reflection of thermal radiation of the Earth back to the surface, causing the greenhouse effect. If it were not for this kind of “cushion”, the temperature on the planet's surface would be at 20°C below.

As confirmation you set out to do on Sunny days in winter and summer. In warm time of the year the humidity is high, and the atmosphere like a greenhouse that warms the Earth in winter, in Sunny weather, are sometimes the most significant cold.

Like all gases, water vapor has certain properties. One of the parameters defining such, is the density of water vapor. By definition, it is the amount of water vapor contained in one cubic meter of air. In fact, so determined by the absolute humidity of the latter.

The Number in the air water is constantly changing. It depends on the temperature, pressure, location. The moisture content in the atmosphere – it is extremely important for the life of the option, and it is constantly observed, which use special devices – hygrometer and a psychrometer.

The Change in humidity caused by the water content in the surrounding space is changed by the processes of evaporation and condensation. Condensation – the phenomenon, the opposite of evaporation, in this case, the steam begins to turn into liquid, and it falls to the surface.

At the same time depending on the ambient temperature may form fog, dew, frost, ice.

When warm air saturated with water vapor, contact with the cold ground, the dew is formed. In the winter, at low temperatures, will form frost.

A Slightly different effect occurs when the cold comes, or begins to cool heated afternoon air. In this case, fog will form.

If the temperature of the surface on which condenseries pairs, is negative, then there is the ice.

Thus, many natural phenomena, such as fog, dew, frost, ice, owe their formation of water vapor contained in the atmosphere.

In this regard, it is worth mentioning about the formation of clouds, which are also heavily involved in weather formation. Water evaporates from the surface and turning into water vapor and rises up. When it reaches the height where condensation begins, it turns into a liquid, and the formation of clouds. They can be of several types, but in light of the issue, it is important that they are involved in creating the greenhouse effect and moisture transport in new places.

In the above material demonstrates that is water vapor, described its influence on the vital processes occurring on Earth.