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Anonymous users2024-02-11Rain is formed through three stages. First of all, the "raw material" of rain, that is, water vapor, is lifted into the air by the wind to form clouds, which in turn form rain and fall to the ground.
The first stage, movement: the cloud is driven by the wind at its location, i.e., moving.
The second stage, unionization: these small patches of clouds, propelled by the wind, unite in a certain area to form a new, larger cloud.
Stage 3, Accumulation: After the small cloud patches unite, the upward gravitational pull within the large cloud mass increases. The upward gravitational pull at the center of the cloud is stronger than the gravitational pull at the periphery.
These upward gravitational pulls cause the cloud to expand vertically. In this way, the clouds expanded upwards and converged one by one. At the same time, it causes the cloud to extend to a relatively low temperature.
As a result, the water droplets and hail particles on the cloud begin to increase. After the above phases, the water droplets and hail particles gain weight so that the upward gravitational pull cannot support them. Eventually, it rains and hails from the clouds to the ground.
1. Convective rain.
When the air is strongly heated, the hot and humid air expands and rises, and the water vapor in the air cools and condenses to form rainfall called convective rain. Convective rain is dominant in the equatorial region throughout the year, and convective rain in our country is mostly seen in the summer afternoon.
Second, the terrain rain.
Terrain rain is forced to climb the slopes when it is blocked by the mountains when it advances due to the moist air. During the ascent, the water in the air cools and condenses to form precipitation. Mostly on the windward slopes of the high mountains.
3. Frontal rain.
When two air currents with different properties meet, the interface between them is called a front. On the front, warm, wet, lighter air is lifted above the colder, drier, heavier air. In the process of uplifting, the water vapor in the air cools and condenses, and the precipitation formed is called frontal rain.
Most of them are in the eastern part of our country.
Fourth, typhoon rain.
Heavy to heavy rain caused by typhoons, tropical storms and hurricanes.
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Anonymous users2024-02-10When 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. These small water droplets gather in the air to form clouds, and then the small water droplets turn into raindrops and fall to the ground, and its volume will increase by more than 1 million times.
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Anonymous users2024-02-09Cold air and hot air meet, and the water vapor in the hot air condenses to form rain.
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Anonymous users2024-02-08Rain is produced by atmospheric circulatory disturbances. Water on the surface of land and sea evaporates into water vapor. The water vapor rises to a certain height and becomes small water droplets when it is cold.
These small droplets make up the cloud, and they collide with each other in the cloud and merge into large droplets. When it was too big for the air to hold, it fell from the clouds and formed rain.
Common causes of rain formation:1. Frontal rain (plum rain).The warm and moist air flow from the ocean meets the cold air from the land, because the cold air is heavy and the warm air is light, the warm and humid air flow is forced to rise and condense in condensation, forming a very long and wide rain band, which is the frontal rain.
2. Convective rain:In summer, under the strong sunlight, the warm and humid air in the local area rises sharply, condenses and forms rainfall, which is convective rain, which is called thundershowers in meteorology, and we usually call it exploding, in addition, typhoon rain is also a kind of convective rain.
3. Terrain rain:Warm and moist air currents from the ocean, when they meet mountains, are forced to rise, and when they condense, they form rainfall.
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. >>>More
Prickly heat is usually caused in the summer because the weather is too hot, and this type of prickly heat usually appears on the back of the neck or the back part, because the back of the neck and back are the most prone to sweating. And there are some things that cover it, so that these parts cannot be ventilated, which leads to the appearance of prickly heat, and people can buy some prickly heat powder to apply.
This has a certain hereditary nature, but I feel that it is also contagious, and if I have experienced it, I can use surgery**, and I can**.
Nitrogen and hydrogen can be synthesized when discharged.
In daily life, most people think that tooth decay is due to eating too much sugar, but in fact, this is only part of the reason, and the ** tooth decay is very complicated. After long-term research, the medical community believes that tooth decay is roughly the result of the joint action of four types of amino gens. >>>More