Why is it raining - where does it come from?

Not many people think about whyit's raining or snowing. Goes and goes, only the weather is bad, it spoils the mood. And yet this is an interesting natural phenomenon, which will be worth studying by everyone, because after becoming parents, people often hear such seemingly simple questions: "Why is it raining or is the sun shining?". It is not necessary for Krokham to explain everything in detail, but a six- or seven-year-old is already quite capable of understanding a serious explanation. So it is better to know the answer to a question that a child can ask when reminding about an umbrella and bad weather.

Their school chemistry course is known to many thatwater can remain in several aggregate states: solid, liquid and gaseous. And from the liquid to the gaseous state it passes almost constantly and the more intensively, the higher its temperature. If you leave a puddle of water on the table, after a while it will dry up - evaporate. Similarly, it evaporates from rivers, lakes, from leaves of plants, soil - from any surfaces. She got there from the underground rivers and lakes that feed the rain that passed before. So, this water evaporates, turns into water vapor.

But in nature everything is balanced: as on the lid of a pot of boiling water, and high in the troposphere, where the air temperature differs significantly from that observed near the ground, condensate forms, that is, drops of water. When they become very heavy, that is, they accumulate a lot, storm clouds are formed, and then the drops fall to the ground under the influence of gravity - the rain is coming! Water is collected in streams, rivulets, eventually its remains can reach one of the oceans. Everything starts from the beginning. Of course, this process is described somewhat simplistically, but without serious omissions.

This phenomenon is known as a cycle or whirlpoolwater in nature. However, the latter term is somewhat incorrect, since a maelstrom is commonly referred to as another phenomenon, which has nothing to do with precipitation.

This whole little story explains whyit's raining. Sometimes it's snowing instead, it's a drop of water that freezes and becomes snowflakes - ice crystals. Grad is an even more interesting phenomenon, it occurs when condensate, that is, droplets of water, collide with very cold air, then some of them may freeze, but not become snowflakes, and turn into hailstones. Large hail can form if there is astrong upward flow of air, which does not give precipitation to fall out for quite a long time. When this cold cloud collides with warmer air, a thunderstorm begins, hail falls out. This phenomenon, however, does not need to be confused with icy rain, snowballs or rain with snow - they are significantly different.

After the rain, especially if the weather is warm, evenhot, you can see the rainbow. When the rain is mushroom, that is, the sun is not hidden behind the clouds, it can be seen right in the rain. It appears when the sun shines through small droplets of evaporating or falling water. This beautiful natural phenomenon is very pleasing to children, so sometimes to the question: "Why is it raining?" - You can even answer: "In order for people to see the rainbow."