How is rain and snow formed? 15

Since the water vapor in the air is cooled to liquid water at low temperatures, or Xiaoice crystals... Thus falling due to gravity greater than buoyancy. Thus rain and snow are formed.

There are three major conditions for precipitation: water vapor condensation nuclei and cooling. The first good understanding is that condensation nuclei are necessary carriers for water vapor condensation, because pure water cannot become water droplets.

As for cooling, there are three main types, the first is the passage of cold air masses, the second is convection (the air rises and is cold due to the influence of air pressure or heat), and the third is the terrain uplift (when the air is blocked, it will rise and cold). All three conditions are indispensable. If the temperature is above 0 degrees Celsius, it will rain, if it is below 0 degrees Celsius, it will snow, and if it is a strong convection to cool down, hail may occur.

Rain is the water droplets that fall from the clouds, the water on the surface of the land and the sea evaporates into water vapor, the water vapor rises to a certain height and becomes small water droplets when it is cold, these small water droplets make up the clouds, they collide with each other in the clouds, merge into large water droplets, and when it is too big for the air to support, it falls from the clouds 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.

Water on Earth is exposed to sunlight.

After irradiation, 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? It mainly relies on two means, one of which is condensation and condensation increase. The second is to rely on the collision 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 condense themselves. If the water and gas energy sources in the cloud are constantly replenished and the surface of the cloud droplets is often supersaturated, then this condensation process will continue, causing the cloud droplets to grow and become raindrops. However, sometimes the amount of water vapor in the cloud is limited, and in the same cloud, the water vapor is often in short supply, so that it is impossible to make each cloud drop increase 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, due to the increasing size and weight of the large droplets, they will not only catch up with the slower small droplets in the process of descending, but will also "swallow" more small droplets and make themselves stronger. When the large cloud droplets grow larger and larger, and finally the air can no longer support them, they fall straight from the clouds to the ground, becoming our common rain.

There are many types of rain, in addition to acid rain, colored rain, there are many interesting rains, such as frog rain, iron rain, gold rain, and even money rain. They are all tornadoes.

A masterpiece.

Rain is caused by the very hot weather in summer, and strong convection of the air in some places, causing a large amount of hot and humid air to rise violently, causing the formation of cumulonimbus clouds. Thundershowers are also common in summer because the intense thermal convection that produces cumulonimbus clouds is only prone to occur in summer.

Snow is formed by direct condensation of water vapor from the atmosphere. The low temperature in the clouds causes the water vapor to form ice crystals, and when the temperature is low enough, the ice crystals fall to the ground and are still snowflakes, which is snow. Snow absorbs heat as it melts, so the ground air temperature will be lower when it melts than when it snows.

Snow forms in the atmosphere with cold ice crystal nuclei, sufficient water vapor, and a temperature below 0.

The causes of rain and snow are not very different, most of them are caused by the combination of warm and humid air currents from the Indian Ocean and cold air, which is cold in winter and prone to snowfall, and rains in the next season.

The difference between the formation of water and snow is that the formation of rain is when the water vapor gathers, the temperature is not so low, and after it falls, it is raindrops, and the snow is when the water vapor condenses, the temperature is low, and it freezes before it gathers into a large area of rain, and it is already snowflakes before it falls and when it falls.

1. Rainwater formation process: forests, rivers, lakes, seas, etc. are irradiated by the sun and water vapor.

Evaporation rises, to the high altitude to the low temperature environment, will condense into small water droplets, at this time the small water droplets are very small in mass, can be carried by the updraft, forming clouds, small water droplets continue to increase, fuse with each other into large water droplets, their own weight becomes larger, it falls to the ground in the state of liquid, this is the formation process of rain.

2. The formation process of snow: Snow is also a form of precipitation, but snow is formed by direct condensation of water vapor in the atmosphere. The low temperature in the clouds causes the water vapor to form ice crystals, and when the temperature is low enough, the ice crystals fall to the ground and are still snowflakes.

1) Formation of rain Clouds composed 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. A cloud made up of ice crystals is called an ice cloud, while a cloud made up of water droplets (mainly over.

1. Cloud. When the air with a lot of water vapor rises into the air, the water vapor temperature decreases and liquefifies into small water droplets or condenses into Xiaoice crystals, and these small particles can be lifted by the air updraft to form floating clouds, so the clouds are composed of a large number of water vapor and Xiaoice crystals.

2. Rain. Consists of water droplets, most of which are larger than millimeters in diameter. Cloud plasmids grow through various physical processes, for example, in water clouds, cloud droplets collide by condensation to form larger water droplets, and when the water droplets are too large to be supported by updrafts, they fall to the ground, which is rainfall.

The three essential factors for rainfall are water vapour, cooling, and condensation nuclei.

3. Snow. The cloud is composed of many small water droplets and Xiaoice crystals, mixed clouds are composed of Xiaoice crystals and supercooled water droplets, in the mixed cloud, when the supercooled water droplets and ice crystals collide, it will freeze and stick to the surface of the Xiaoice crystals, so that it increases rapidly, when the Xiaoice crystals increase to be able to overcome the resistance and buoyancy of the air, fall to the ground, is snowfall.

Snow is a natural phenomenon in which water condenses in the air and then falls into snow.

Since the cloud is composed of small water droplets and Xiaoice crystals, when the temperature is very low, the Xiaoice crystals in the clouds will melt when they collide with each other, and bond with each other and freeze again, so repeated, the ice crystals will increase. When the Xiaoice crystals grow to overcome the resistance and buoyancy of the air, they fall to the ground, which is snow. Therefore, snow only occurs under the influence of very cold temperatures and extratropical cyclones.

Snow is good for the growth and development of crops. Snow is a substance with a very good thermal insulation effect, can protect plants from frostbite in the cold winter, the melting of snow water in the spring of the next year can provide a good water supply for vegetation, the power of nature is definitely not a coincidence, because the heat conductivity of snow is very poor, the soil surface is covered with a layer of snow cover, which can reduce the spread of soil heat and block the invasion of cold on the snow surface, so the crops protected by snow can safely survive the winter.

Snow also stores water for crops. In addition, snow can also be used to enhance soil fertility. It has been determined that every 1 liter of snow water contains about grams of nitrogen.

When snow water penetrates the soil, nitrogen fertilizer is applied once. Feeding livestock and poultry with snow water and irrigating crops can yield significant benefits.

Summary. Snow is one of the forms of precipitation. In meteorology, rain, snow, hail, and other water vapor condensates that fall from the sky to the ground are called "precipitation". Snow is precipitation made up of large amounts of white opaque ice crystals (snow crystals) and their polymers (snow masses).

Snow is one of the forms of precipitation. In meteorology, water vapor condensates that fall from the sky to the ground, such as old rain, snow, and hail, are called "precipitation". Snow is a wild precipitation composed of a large amount of white opaque ice crystals (snow crystals) and its polymer (snow masses).

Water is the foundation of the existence of all living beings on the earth, and the changes and movements of water have created the world we have today. On Earth, water is constantly circulating, the water in the ocean and the ground is heated and evaporated into the sky, and these water vapors move with the wind to other places, and when they encounter cold air, they form precipitation and return to the surface of the earth.