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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.
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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.
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Rain is a natural phenomenon in which the water droplets that make up the clouds fall naturally when the clouds reach a certain thickness. Rain is the water on the earth after being irradiated by the sun's rays, forming water vapor, the water vapor evaporates and rises into the air, and the water vapor condenses into water droplets when it encounters cold air in the air. Condensation releases heat and heats the temperature, so the warm air will continue to rise, and then when it is cold, the water vapor will continue to condense, and so on, and the updraft can stretch from low altitude to 10,000 meters altitude.
When the ice crystals in the cloud collide and merge with each other, some water vapor directly adheres to the surface of the ice crystals, and the Xiaoice crystals will grow, and when the updraft cannot support it, it will fall under the action of gravity, forming various forms of precipitation (rain, snow, burning hail, etc.). During the descent, the temperature at low altitude rises, and the ice crystals melt, which becomes rainfall.
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Hello, dear, rain is due to the formation of clouds by water vapor through certain physical and chemical changes, and the clouds go through a certain process (such as lift-off, cooling, etc.), causing the water vapor to return to a liquid state, and gradually condense into water droplets, forming the process of precipitation. It can be seen that the main causes of rain are the following two points:1
Evaporation and water vapor production: There are a large number of water bodies on the earth, such as oceans, lakes, rivers, etc., which evaporate or evaporate through sunshine, heat and other factors to form water vapor, which is very light and will rise with the air until it reaches a certain height to form clouds. 2.
Cloud formation and condensation: Clouds are mainly formed by water vapor rising, cooling, and condensing in the air. When the air rises to a certain height, as the temperature gradually drops, the water vapor gradually condenses into tiny water droplets, which collide with each other to produce heavier water droplets, and eventually form rain or other precipitation rubbers.
Precipitation can take the form of rain, snow, sleet, etc. The cause of rain is the condensation and condensation of water vapor to form precipitation, which requires specific natural conditions and processes for it to occur. Different geographical and climatic conditions can have a great impact on precipitation patterns and e.g. spring loads.
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Summary. Kiss! Hello, happy to answer your <>
The cause of the rain comes from the warm and humid air currents of the ocean, which meet the mountains and are forced to rise, and when they meet condensation, they form rainfall.
Reasons why it rains.
Kiss! Hello Rent, we are happy to answer your <>
The reason for the rain comes from the warm and humid air currents of the ocean, which encounters the mountains, is forced to rise by seepage and balance, and condenses to form rainfall.
Kiss Here for you, because rivers, rivers, lakes, and seas are irradiated by the sun, the water inside becomes water vapor. The water vapor rises and turns into small droplets, and finally into clouds. The small water droplets and Xiaoice crystals that make up the clouds are supported by the air flow below, but the rising air flow is still transporting water vapor in.
The small water droplets and Xiaoice crystals in the cloud collide with each other in motion, thus increasing in size. Then, as the volume of the ice crystals in the upper layer of the cloud slowly increases, the water droplets fall between the droplets in the lower part of the cloud, and the water droplets become larger and larger. When these droplets are so large that the updrafts can't hold them, it rains like cheats.
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It rains in the sky because the water on Earth turns into water vapor and evaporates into the air when it is irradiated by the sun's rays. When water vapor meets cold air at high altitude, it condenses into water droplets, which gather in the air to form clouds. Precipitation can only be formed when the cloud droplets grow to the point where they can support the air resistance of the slow wheel and the updraft, and do not evaporate as they descend to the groundYes.
Rainfall is one of the forms of precipitation, i.e. liquid droplets that fall from clouds to the ground.
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Summary. Kiss! Hello, happy to answer your <>
Dear, the reason why it rains is because of the rise of water vapor.
Reasons why it rains.
Kiss! Hello, happy to answer your <>
Dear, the reason why it rains is because of the rise of water vapor.
This is my understanding of rain, and I hope that the previous thoughts will help you. 1.There are condensation nuclei in the atmosphere.
2.There is water vapor in the atmosphere. When the water vapor in the atmosphere turns into water droplets when it is cold, and encounters condensation nuclei (that is, dust in the atmosphere) and the more and more droplets of water potatoes and plums reach a certain level, the gravity is too large, and the wisdom is trapped in the atmosphere and cannot support it, and rainfall is formed.
The rain in the sky comes from the clouds in the sky, and the clouds in the sky are actually the condensation of water and the medium of rain.
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Hello dear. The water on the ground absorbs heat and becomes water vapor, rises to the upper layer of the sky vapor layer, due to the low temperature of the upper layer of the vapor layer, the volume of water vapor decreases and the proportion increases, the steam falls, due to the high temperature below the vapor layer, it absorbs heat during the descent process, rises again and cools again, and then falls, so that the gas molecules gradually shrink, and finally concentrate on the bottom layer of the vapor layer, form a low-temperature zone at the bottom layer, and the water vapor is concentrated in the low-temperature zone, which forms a cloud. The clouds gradually become larger, the convection up and down inside the clouds becomes more and more intense, the temperature becomes lower and lower, and finally raindrops fall.
In the early stage of raindrop formation, the cloud droplets mainly rely on continuously absorbing the water vapor around the cloud body to condense and condense themselves. If the water vapor energy source in the cloud is constantly replenished and replenished, so that the surface of the cloud droplets is often in a state of oversaturation, then this condensation process will continue, so that the early droplets of the cloud will continue to increase and become raindrops. However, sometimes the amount of water vapor in the cloud is limited, and the supply of water vapor in the same cloud is often in short supply, so it is impossible 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, 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.
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