Not many people think about why it rains or snows. It goes on and on, only the weather is bad, it spoils the mood. Meanwhile, this is an interesting natural phenomenon that it would be useful for everyone to study, because, becoming parents, people often hear such seemingly simple questions: "Why is it raining or is the sun shining?" Babies don't have to explain everything in detail, but a six- or seven-year-old child is already quite capable of understanding a serious explanation. So it is better to know the answer to the question that the child may ask when reminded of an umbrella and bad weather.
From their school chemistry course, many people know that water can exist in several states of aggregation: solid, liquid and gaseous. Moreover, from a liquid to a gaseous state, it passes almost constantly and the more intensely, the higher its temperature. If you leave a puddle of water on the table, after a while it will dry out - it will evaporate. In the same way, it evaporates from rivers, lakes, from the leaves of plants, soil - from any surface. She got there from underground rivers and lakes, which are fed by the rain that has passed before. So this water evaporates, turns into water vapour.
But in nature, everything is balanced: both 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 earth, condensation forms, that is, drops of water. When they become very heavy, that is, they accumulate a lot, thunderclouds form, and then the drops fall to the ground under the influence of gravity - it's raining! Water is collected in streams, streams, in the end, its remnants can reach one of the oceans. Everything starts over. Of course, this process is described in a somewhat simplified way, but without serious omissions.
This phenomenon is known as the water cycle or whirlpool in nature. However, the last term is somewhat misleading, since a whirlpool is usually called another phenomenon that has nothing to do with precipitation.
This whole little story explains why it's raining. Sometimes it snows instead, these are drops of water that freeze and become snowflakes - ice crystals. Hail is an even more interesting phenomenon, it occurs when condensate, that is, water droplets, collide with very cold air, then some of them can freeze, but not become snowflakes, but turn into hailstones. Large
hail can form if there is a strong updraft of air in the cloud, which prevents precipitation for quite some time. When this cold cloud collides with warmer air, a thunderstorm begins, hail falls. This phenomenon, however, should not be confused with freezing rain,snow pellets or sleet - they are significantly different.
After the rain, especially if the weather is warm, even hot, 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 during the rain. It appears when the sun shines through small droplets of evaporating or falling water. This beautiful natural phenomenon is very popular with children, so sometimes the question: "Why is it raining?" - you can even answer: "In order for people to see the rainbow."
