How nice it is to sit in a cozy warm room and, wrapped in a fluffy blanket, watch how it rains. What is rain? Who among us hasn't thought about this? Especially with this question they begin to be puzzled, watching how the drops, gathering on the glass, slowly slide down and disappear from view. At this moment, many philosophical questions are spinning in my head. One of them: "Why does it rain?"
Why do we need rain?
Our planet is the only inhabited place in the solar system. And it is the presence of water that allows all life on Earth to exist. Plants, animals, birds and, of course, people need life-giving moisture.
In modern society, it is not customary to be puzzled by issues of drought, a long absence of rainfall or their insufficiency. Citizens are generally little interested in rain, that such a natural phenomenon can be the meaning of life for someone, they are unaware. No, not because of cruelty or narrow-mindedness, but simply because water enters the apartment around the clock from a pipe, and to get it you just need to turn the valve.
The rains saturate the rivers and lakes, they water the plants with water, giving them the strength to grow and ripen the fruits. Withouttheir life cycle would be impossible, a world without water would turn into an endless desert, lifeless and monotonous.
The birth of rain
Moisture is not only rivers, lakes and streams. It is everywhere - in the leaves, the earth, buildings are impregnated with it, and even a person gives a little water into the air during breathing. All the water that evaporates from the surface of the earth rises, where its smallest particles collect, forming clouds.
Here, it seems, it is clear how rain appears, what are these drops falling from the sky. But in fact, not all clouds are poured by a downpour or a fine drizzle. After all, how often, running into the sun, the cloud only gives a short shadow. Someone looks at it with joy, tired of the summer heat, someone becomes sad, because it's about to rain …
So why does it rain and when can we expect it? The smallest drops of water, gathering into clouds, sooner or later grow to such a size that they cannot be kept in the air. Then they fall to the ground in the form of precipitation. Another reason it rains is the layering of water in different physical states within the cloud. What does it mean? In the warm season, when it mostly rains, water is contained in the lower part of the cloud, but it is already freezing from above, under the influence of low temperatures. And so, when water crystals mix with their liquid relatives, they melt, and, forming large drops, fall down like rain.
Love a thunderstorm in early May…
Who doesn't love a thunderstorm? The smell of ozone in the air is indescribablefreshness, when you can breathe in clean, transparent air, saturated with oxygen, with a full chest. But this does not happen after every rain, but only after a thunderstorm.
Thunderstorm accompanied by thunder heavy rain. What is a thunderstorm, everyone knows who at least once found himself without shelter at this time. It doesn't last long, but with this kind of heavy rain, a month's rainfall can sometimes fall in a very short amount of time.
All this water turns into rushing streams, transforming the city streets, which for a moment are more like mountains, with their rushing rivers, full and powerful. And although meteorologists warn of the possibility of a downpour, it still takes many by surprise. It is simply impossible to predict such rain with an accuracy of up to a minute. It is born under the action of the rapid displacement of air currents when hot and cold air masses collide. And the result can be very unpredictable, from a downpour that pours like a wall for some time, to a hurricane that destroys everything in its path.
Drizzling rain
The smallest droplets that seem to freeze in the air, settle on objects, saturate them with water, seeping through even the smallest cracks, this is also rain. Scientists call it drizzle. This phenomenon is more typical for autumn or warm winter. At this time, the weather is rather cool, and the drops do not grow larger in the clouds. And the clouds themselves are not visible. When the rain drizzles, the sky is covered with a gray veil, hopeless, monotonous, the same as the rain, which also falls monotonously from the sky.
What you didn't know about the rain
People have learned to disperse the clouds. Rain pours from the sky when it is needed, if crushed ice is poured onto a cloud from an airplane.
Thailand is famous not only for its resorts and exotic cuisine, in this country a priori you cannot get caught in the rain during the day, because they go there only at night.
In some countries where the summer is very hot, you can meet an unusual phenomenon. Raindrops dry up before reaching the ground, and as a result, falling under such rain, you can wash your face, but your feet will remain completely dry.
Every rain is acid! That is, the normal acid content in rainwater is pH 5.6. Such water is safe and does not threaten to burn. But if the acidity is lower by 1 unit, then such rain threatens the death of plants and insects.
