Rain ... What are these little drops?

How nice to sit in a cozy warm room and, wrapped in a furry plaid, watch the rain. What is rain? Who among us did not think about it? Especially this issue begins to be puzzled, watching as the drops, gathering on the glass, slowly slide down and disappear from the view. At this point, many philosophical questions revolve around my head. One of them: "Why does the rain fall?"

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 vegetative moisture.

In modern society it is not accepted to be puzzled by questions of a drought, a long absence of precipitation or their insufficiency. Townspeople do not care much about rain, what a natural phenomenon can be for someone's sense of life, they are unaware. No, not because of cruelty or nearness, but simply because the water comes round the clock from the pipe to the apartment, and to get it you just need to turn the valve.

Rains fill rivers and lakes, they water plants with water, giving them strength for growth and ripening of fruits. Without them, the life cycle would be impossible, the world without water will turn into an endless desert, lifeless and monotonous.

The birth of rain

Moisture is not just rivers, lakes and streams. It is everywhere - in leaves, earth, it is soaked in buildings and even a person gives a little water to the air during breathing. All the water evaporated from the surface of the earth rises, where its tiny particles gather, forming clouds.

It seems, it is clear how it rains, what are these drops falling from the sky. But in fact, not all clouds are spilled by rain or shallow drizzle. After all, as often, running into the sun, the cloud only gives a short-term 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 to wait? The smallest drops of water, gathering in the clouds, sooner or later coalesce to such a size that they can not be held in the air. Then they fall to the ground in the form of precipitation. Another reason for the rain is the stratification of water in different physical states inside the cloud. What does it mean? In the warm season, when rain is predominant, there is water in the lower part of the cloud, but it already freezes from above, under the influence of low temperatures. And now, when the crystals of water mix with their liquid congeners, they melt, and, forming large drops, fall down with rain.

I love the storm in early May….

Well, who does not like storm? The smell of ozone, which is in the air, is an inexpressible freshness, when you can breathe clean clear air, saturated with oxygen, full chest. But this happens not after every rain, but only after a thunderstorm.

Thunder is accompanied by a thunderstorm with heavy rain. What is a thunderstorm, everyone knows who at least once was at that time without shelter. It does not last long, but with such a rain shower it can sometimes drop a monthly rainfall rate in a very short period of time.

All this water turns into bubbling streams, transforming the city streets, which for a moment more resemble mountains, with their swift rivers full and powerful. And although meteorologists warn of the possibility of a shower, it still catches many by surprise. Predicting this rain to the nearest minute is simply impossible. It is born under the action of a rapid displacement of air flows, when hot and cold air masses collide. And the result can be very unpredictable, from a shower pouring a wall for a while, to a hurricane that destroys everything in its path.

Drizzling rain

The smallest droplets that seem to freeze in the air settle on objects, impregnate them with water, seep into even the smallest cracks, it's also rain. Scientists call it drizzly rain. The phenomenon is more typical for autumn or warm winter. At this time, the weather is rather cool, and the drops do not coalesce 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 did not know about rain

People have learned to scatter clouds. The rain pours from the sky when it is needed, if you pour crushed ice onto a cloud from an airplane.

Thailand is famous not only for its resorts and exotic cuisine, in this country you can not get a priori rain in the afternoon, 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, not reaching the ground, in the end, having got under such rain, you can wash your face, but your feet will remain absolutely dry at the same time.

Every rain is acid! That is, the normal acid content in the rainwater is equal to pH 5.6. Such water is safe and does not threaten burns. But if the acidity is lower by 1 unit, then such rain threatens the death of plants and insects.