How is rain formed? 10. How is rain formed?

The water vapor in the air is condensed into small water spots or Xiaoice crystals at high altitude, and the small water spots or Xiaoice crystals collide and merge with each other, becoming larger and larger, and when the air cannot support it, it will fall, and when the low-altitude temperature is higher than O, it is rain.

Clouds made up of liquid water droplets, including supercooled water droplets, are called hydrogenic clouds. If there are conditions for the cloud droplets to increase into raindrops and make the raindrops have a certain rate of decline, then it is rain or drizzle that falls. Clouds made up of ice crystals are called cryogenic clouds, while clouds that are made up of water droplets (mainly supercooled water droplets) and ice crystals together are called hybrid clouds.

Ice crystals or snowflakes that fall from ice-forming clouds or mixed clouds fall into the air layer above 0, and after melting, they also become raindrops that fall to the ground, forming rainfall.

Rain is a drop of water that falls from a cloud, the water on the surface of the land and the sea evaporates into water vapor, and the water vapor rises to a certain height and becomes a small droplet when it is cold, and these small droplets form a cloud, which collides with each other in the cloud and merges into a large droplet, and when it is too big for the air to support, it falls from the cloud and forms rain. Rain can occur in a variety of ways, from drizzle to continuous rain and downpour showers. Rain is the most important source of fresh water in human life, and plants must also be nourished by rain and dew to thrive.

But flooding caused by heavy rains can also bring great disasters to human beings.

The water vapor in the air is condensed into small water droplets or Xiaoice crystals, which collide and merge with each other in the clouds, when the temperature is lower than 0 degrees, larger and larger water droplets become Xiaoice crystals, falling from the sky, when the temperature is lower, the small water droplets become round Xiaoice and soon fall from the sky is hail.

Why does it rain.

As rivers, rivers, lakes, and seas are exposed to the sun, water becomes water vapor. The water vapor rises and turns into small droplets, and finally into clouds. The small water droplets or Xiaoice crystals that make up the cloud are supported by the air flow below, and the rising air flow is constantly transporting the water vapor below the cloud to the cloud.

The small water droplets and Xiaoice crystals in the cloud collide with each other in motion, and the volume will increase. The water droplets in the lower layer of the cloud gradually become larger, and as the volume of the ice crystals in the upper layer of the cloud increases, the water droplets fall between the droplets in the lower part of the cloud layer, and the water droplets become larger and larger. When these droplets are so big that the updrafts can't hold them, it rains.

Why is it thundering.

There are many currents of air in the air that are constantly moving. There is a direction to these air currents.

Running up, some running down, in different directions, at different speeds, some fast, some out.

Slow. The movement of the air currents causes the cumulus clouds in the air to either rush upwards and some downwards. The friction between clouds and clouds causes clouds to carry different kinds of charges. Since the same kind of charge repels each other, it is positive and negative.

The charges are gathered at the ends of the cloud. The faster the air moves, the thicker the clouds, and the more electricity is carried. Cumulus clouds carry electricity reached.

To a certain extent, it will pass through the air and neutralize the two charges. Because electricity generates heat when it passes through the air, it makes it empty.

The gas expands rapidly, resulting in a loud noise, which is called a transport mine.

If the charged cumulus cloud is relatively close to the ground, the electrostatic inductance will cause the ground to carry a different charge than the lower layer of the cloud.

When the charge reaches a certain level, the cumulus cloud will discharge to the ground, which is a landing mine that is easy to cause disasters.

Generally speaking, it is easy to discharge from ** when there is something protruding from the ground, so when we are in the wilderness, we can't.

Take shelter from the rain under the tall trees!

Rain is a drop of water that falls from a cloud. When water on Earth is irradiated by sunlight, it becomes water vapor and evaporates into the air. When water vapour meets cold air at high altitude, it condenses into small water droplets.

These small droplets are small, with a diameter of only millimeters and a maximum of millimeters. They are small and light, held in the air by updrafts in the air. It was these small droplets of water that gathered together in the air to form clouds.

For these small droplets to fall to the ground as raindrops, they would have to increase in size by more than 1 million times. How do these small droplets grow their size to more than 1 million times?

Cloud droplets mainly rely on two means: condensation and condensation increase. Depends on the bump and increase of cloud droplets.

In the early stages of raindrop formation, cloud droplets mainly rely on the continuous absorption of water vapor around the cloud body to condense and bloom themselves. If the water vapor energy source in the cloud is continuously replenished and the surface of the cloud droplet is often in a supersaturated state, then this condensation process will continue, so that the cloud droplet will continue to grow and become raindrops. However, sometimes the amount of water vapour in the cloud is limited, and in the same cloud, the water vapour is often in short supply, so it is not possible to make each cloud drop grow into a larger raindrop, and some smaller cloud droplets have to be merged into the larger cloud droplets.

If water droplets and ice crystals coexist in the cloud, the process of condensation and bloom increase will be greatly accelerated. When the droplets in the cloud increase to a certain extent, as the size and weight of the large droplets increase, they will not only catch up with the slower small droplets in the process of descending, but will also swallow up more of the smaller droplets and make themselves stronger. When the big cloud droplets grow bigger and bigger, and finally the air can no longer support them, they fall straight from the clouds to the ground and become rain.

When the hot air in the atmosphere meets the cold air, small water spots or Xiaoice crystals will be formed, and countless small water spots or Xiaoice crystals form clouds.

Step 2: When the cloud is pushed up to below 0 degrees by the hot air, all the small water droplets in the cloud will be frozen into ice crystals, and when these ice crystals will be pressed back into the cloud above zero by the cold air, the small water droplets in the cloud will stick to the ice crystals and become a mixture of ice and water, so that the original ice crystal volume increases.

Step 3: If there is a wind rotating up and down in the space above and below zero, the ice hydrate will be blown to a sub-zero temperature and then formed into ice cubes in the air, and the air below will be blown above the zero temperature to recombine with some new small water spots, and the original Xiaoice crystals will continue to increase.

Step 4: When it is repeated many times in hot and cold air, the original Xiaoice crystals become hail, when the wind can not blow the ice-water mixture up again, it falls to the ground, and the hail melts in heat during the landing process, and it becomes raindrops.

We all know that it rains only when there are clouds in the sky. But not all clouds turn into rain.

Clouds can be divided into three types according to their composition, which are composed of liquid water droplets called water clouds; Composed of ice crystals, it is called ice clouds; A hybrid cloud made up of water droplets and ice crystals is called a hybrid cloud. These small water droplets or Xiaoice crystals in the cloud are very small in size and are collectively called cloud droplets. The average radius of a cloud drop is only 10 microns, while the radius of an average raindrop is 1,000 microns.

Therefore, the volume of a small cloud droplet needs to increase by about 1 million times before it can become a raindrop.

Due to the small size of the cloud droplets, they cannot overcome the air resistance and updrafts, and rain can only occur when the cloud droplets grow to the point where they can overcome the air resistance and updrafts, and do not evaporate as they descend to the ground. Therefore, whether a cloud can rain means whether it can turn about 1 million cloud droplets into one raindrop in a certain period of time (e.g. 1 hour).

There are two processes involved in the growth of a cloud droplet into a raindrop. The first is the process of condensation (or condensation) growth of cloud droplets, that is, the process of cloud droplets increasing by the condensation of water vapor molecules on its surface. This effect plays a major role in the initial phase of cloud droplet enlargement.

During the formation and development stage of clouds, if the surface water vapor continues to rise and enter the cloud, the surface of the cloud droplet is often in a supersaturated state, and the water vapor condenses (or condenses) on the surface of the cloud droplet and the cloud droplet increases. However, sometimes the amount of water vapour in the cloud is limited, and in the same cloud, the water vapour is often in short supply, so that it is impossible to increase the size of each cloud droplet, and some smaller cloud droplets have to be merged into the larger cloud droplets. In a hybrid cloud, this condensation (or condensation) growth process will be greatly accelerated.

When the enlarged droplets and the original small droplets move in the cloud, there are different velocities, which causes them to collide. The process of merging and increasing between large and small cloud droplets is the second process, which is called the process of rushing and growth. This effect plays a major role in the later stages of cloud droplet enlargement.

The large cloud droplets in the cloud fall faster than the small cloud droplets, so the large cloud droplets quickly catch up with the small cloud droplets in the descent process, and the large and small cloud droplets collide with each other and merge to become larger cloud droplets. When there is an updraft, when the large and small cloud droplets are carried upward by the updraft, the small cloud droplets will also catch up with the large cloud droplets and merge with them to become larger cloud droplets. The larger droplets can merge with more smaller droplets as they descend, snowballing larger and larger.

When the air could no longer support the larger and larger cloud droplets, it fell from the sky. What falls from the clouds of water is rain. Ice crystals or snowflakes that fall from ice clouds or mixed clouds fall into the air layer above 0 and melt as raindrops to the ground.

We have seen the drizzle, the downpour of thundershowers, and we have heard of acid rain, freezing rain, plum rain, ......These names are not called randomly, and each name has its specific reason for its origin.

How rain is formed, the process by which raindrops are formed.

Conditions for the formation of rain: When the water vapor in the upper altitude meets the condensation nucleus, it will bind together, and when the structure is large enough to fall due to gravity, rain is formed.

Cool Lala rejected me, so I thought about it, and Li Lutong cried and cried.

We already know that clouds are made up of many small water droplets and Xiaoice crystals, and that raindrops and snowflakes grow and grow larger. So, how do small water droplets and Xiaoice crystals grow and grow in the cloud?

In a water cloud, the cloud droplets are all small droplets. They are mainly increased by continuing to condense and colliding with each other. Therefore, in a water cloud, for the cloud droplet to increase to the size of a raindrop, the cloud first needs to be very thick, dense, and watery, so that it can continue to condense and grow; Secondly, there needs to be a strong vertical motion in the water cloud, so as to increase the chance of multiple collisions and merging.

In the thinner and more stable water clouds, the cloud droplets do not have enough opportunity to condense and merge and grow, and can only cause cloudy, cloudy skies, and little rain.

The distribution of the size of the cloud droplets varies from one cloud to another, and the reason for the uneven size of the cloud droplets is the transfer of water vapor in the surrounding air and the evaporation of the cloud droplets. The factors that make the cloud droplets grow are the condensation process and the collision merger process, in the case of only condensation, the size of the cloud droplets is uniform, but due to the replenishment of water vapor, some cloud droplets grow, plus the result of the merger, the larger cloud droplets continue to grow and become larger into raindrops. Raindrops fall by gravity, and when there is an updraft, an upward force is applied to the raindrops, slowing them down, and some small raindrops may be carried up.

Only when the raindrops increase to a certain extent can they descend to the ground and form rainfall.

The water vapor rises into the air and condenses into small droplets, which accumulate more and more, forming clouds, which are heavier and heavier. It fell.

The rain is caused by water being sucked up by the sun into the sky and falling into the clouds, and later a lot is very heavy. And it fell and turned into rain.

It's because the hot air is lifted up by the terrain or the cold air, and when it encounters the cold air during the uplift, it is liquefied and becomes rain, and the rain has a certain weight and falls to form.