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Alternating coagulation and solidification form hail!
High-altitude water vapor meets the cold air flow after exothermic liquefaction and solidifies (or directly condenses) into small particles (ice crystals) - hail core, and then under the action of cumulonimbus clouds and strong troposphere, the water vapor and small water droplets in the air have condensation, liquefaction and solidification on the "core", so repeatedly, so that the volume (mass) of the hail continues to increase, when the updraft of the troposphere can not support, it will fall, if the falling process encounters a warm air flow, it completely melts, and the ground becomes rain, If there is still a certain volume of solid water in the process of falling, it will be hail when it lands! - I can understand that this is enough in junior high school!
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It's coagulation, not coagulation.
Explanation: The interchange between the solid and liquid states is called melting and solidification; The interchange between the liquid and gaseous states is called vaporization and condensation;
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Coagulation is the solidification of small water droplets in the air.
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Hail is solidification, not condensation.
Hail is formed in convective clouds.
When the water vapour rises with the air flow and cools, it will condense into small water droplets, and the temperature will continue to decrease as the altitude increases, reaching Celsius.
At sub-zero temperatures, water droplets condense into ice particles.
Note that it is "water droplets that condense into ice particles" - from liquid to solid, it is solidification;
Water vapour. If it is directly condensed into frost, it will form a beautiful pattern, such as frost and snow;
This kind of clump of hail must have solidified.
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What the teacher said is correct, it should be formed by condensation.
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Condensation: The phenomenon that a substance changes from a gaseous state to a solid state without going through a liquid state. It is a change in the state of matter that occurs when the temperature and air pressure are higher than the three-phase point.
In the process of condensation, the substance needs to release heat. It is a change in the state of matter of the sail height that occurs when the temperature and air pressure of the substance are below the three-phase point.
Hail Snow is condensation.
The phenomenon of condensation in life.
The actual phenomenon of condensation is as follows: the light bulb will turn from transparent to black after a long time, which is heated when the light bulb is working, and the tungsten vapor formed by the heating and sublimation of tungsten filament is condensed on the wall of the light bulb into a very thin layer of solid tungsten
On winter nights, the water vapor in the room often condenses into ice crystals on the window panes; "rime" on tree branches; The popsicles that came out of the refrigerator formed a layer of "frost"; Another example is the formation of "frost" in nature, etc., which are all condensation phenomena.
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Frost formation is caused by the invasion of cold air from the stronger Sinden, which cools down to 0 or below, and this frost has a wide range and a large cooling range.
Radiation frost. On clear or breezy nights, radiative cooling lowers the temperature of the open surface of the floor or near-Earth objects to 0 or below, resulting in the formation of frosts, which occur over a relatively small scale, as well as advection radiant frosts. Frosts occur due to the combined action of cold advection and radiative cooling.
The impact of this frost is more severe.
Precautions for hail weather.
1. If you are indoors, you should close the doors and windows quickly, and stay away from the glass doors and windows, so as not to smash the doors and windows by hail and be injured by glass fragments.
2. If you are outdoors, you should quickly enter buildings and other facilities that can resist falling objects, and do not take shelter in places where there are glass, wooden boards, houses that are easy to collapse, and branches that are easy to break.
3. If you are in the field, protect your head with objects or arms, and move to a safe building as soon as possible. According to the proverb "when hail comes with a tailwind, we turn our heads when the wind blows", when hail falls, we should go with the wind so that we can avoid "head-on conflict" with hail.
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Rime, frost, and snow belong to Ninghua.
Fog is liquefied.
Rain can be formed by liquefaction, melting, etc.
Hail can be either solidification or blooming.
Hail A ball or block of ice that falls to the ground with a diameter of 5 mm to 10 cm is called hail. Hail is the result of a combination of water vapor condensation and freezing of water droplets in thunderstorm clouds. Xiaoice hail with a diameter of less than 5 mm is also known as freezing rain or ice pellets.
Hail formation requires convective clouds with strong updrafts (e.g., cumulonimbus) and is therefore often accompanied by thunderstorms. , 10, condensation, 2, all are small droplets of water, condensation, 1, rime, frost, and snow are condensation stools; What is left behind is liquefaction. ,1,Rime,Frost,Snow,Hail Condensation Fog,Rain,Melt,1,Ahem!
Let me tell you about the rain, the snow and the hail!
Every day, the sun rises high, and so do we, go to school normally.
But although the sun is very ordinary, ordinary, its sunlight can 'absorb rotten and coarse water' (I don't know how to say it), and the water rises high into small droplets, and the small droplets take the filth of the sky and turn into clouds.
When the number of small water droplets in the cloud exceeds the number that the cloud can hold, they fall one after another, and it is rain.
If they fall with very cold air, then on the way down, they slowly change. 1,
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Summary. Hello, it is raining when the humid air rises and cools and condenses into ice, because the amount of condensation of hot and humid air is not too large in general, so the area of ice will not be too large, and then when the cold and warm fronts meet, the hot air that condenses into ice will become rain falling.
Hello, it is raining when the coarse silver humid air rises and cools and condenses into ice, because the amount of hot and humid air condensation is not too large under normal circumstances, so the area of the ice will not be too large, and then when the cold and warm fronts meet, the hot air condensed into ice will become rain and fall.
Of course, there are also very few areas where the winter is too cold and hail will occur, such as the north of Yanshan Mountain and the east of the Qinghai-Tibet Plateau.
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Ice? Under what circumstances does it condense into frost or snow or ice?
Under what circumstances will the water condense into frost or snow or ice?
Water at 0 exothermic solidifies into ice.
When the water vapor spine is below zero degrees Celsius, it will condense into frost or snow.
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