Why are the rains?

Why are the rains? It is unlikely that a person will ask this question if the sky frowns outside the window, the first drops drop from him, but you need to leave the house urgently. In this case, people simply take an umbrella and go about their business. But it is quite possible at moments of leisure, philosophizing and contemplation Think about why it rains. In nature, there are many permanent processes. One of them is the water cycle. Its main participants are: fluids of various kinds and the sun.

The light not only illuminates the earth, but also warms it. Water, heated, passes into another state - gaseous. Water vapor rises. The higher the pairs rise, the more the cold air surrounds them. Molecules under these circumstances in the process of condensation are converted into crystals, which accumulate, form clouds and clouds. When they gain a large mass, there is a violation of their stability. Cloud clusters are no longer able to hold water, and drops begin to fall out of them. That's why it rains.

The water that has fallen to the surface of the earth either evaporates again, or seeps into the ground, or immediately enters the pond. In any case, the process of evaporation begins again. It is endless and, like all ingenious, simple.

Usually the type of precipitation is determined by the temperature regime in the sub-layer, the height of the clouds and their structure. As a rule, clouds bringing precipitation have a mixed composition: ice crystals and drops of cold water. Falling out of the total mass down, this mixture is converted into conditions of either warm, or frosty air. If the temperature of the sub-layer is positive, rain drops reach the ground. If there are negative parameters, snow falls on the ground.

The lower layers of the atmosphere also play a role. If in summer the clouds are formed very high above the ground, under conditions of negative temperature, then the basic composition of the mass consists of ice crystals. This means that snow falls out of the cloud in the cloud layer. But passing through warm air, snowflakes are melting. Then, hail falls on the ground. If they manage to melt completely, then drops of water. That's why it's snowing, rain, hail.

Why there are rains in the summer - this question will be answered by every schoolboy. Because it's warm. But why does it rain in the winter? It happens that atmospheric phenomena occur with a deviation (for various reasons) from the normal course of events. For example, in winter in the middle latitudes can fall into the warm cloud clusters formed in the tropical region above the ocean or the sea. In this case, a thaw begins, the snow melts earlier, and rain falls to the ground instead of snowflakes.

This also happens in the summer. A lot of cold air is pouring in from the Arctic. Warm is pushed aside, but at the same time an atmospheric front with a powerful cloudiness is formed. Precipitation can be extremely abundant. First it rains, then as the air cools down, hail or wet snow can go. These precipitations can fall out without cooling, but always in the presence of a powerful cloud cover. If the front hangs over a certain terrain, the temperature of the atmosphere will drop even further, then real snow will be on the ground.