Traditional Culture Encyclopedia - Weather inquiry - Rain, hail, and snow are formed by what changes in water occur
Rain, hail, and snow are formed by what changes in water occur
1. Rain is formed by the vaporization-liquefaction of water.
Rain is water that vaporizes when exposed to sunlight, evaporates into water vapor, evaporates into the air, and then condenses into clouds. Clouds liquefy when they encounter cold air at high altitudes, and then condense into small water droplets. This is rain.
2. Hail is formed by the vaporization-liquefaction-condensation of water.
When the water on the surface is vaporized by the sun, and then rises into the sky, many water vapors gather together and condense into clouds. When it encounters cold air, it liquefies and forms raindrops or ice crystals. When the raindrops in the cloud encounter violent rising airflow and are carried to an altitude below 0°C, they liquefy into small ice droplets; as the upward airflow containing water vapor increases, the small ice droplets gradually become larger and will form Larger ice masses, also known as hailstones. .
3. Snow is formed by the vaporization-liquefaction-condensation of water.
When the water on the surface is exposed to the sun and vaporizes, it condenses into clouds in the sky. Due to the cold air, part of the cloud liquefies into water droplets, and part condenses into ice, forming a mixed cloud of water, ice and gas. Due to the existence of ice and water vapor, the ice crystals continue to condense and grow, becoming snowflakes. When the temperature under the cloud is below 0°C, snowflakes can fall all the way to the ground to form snowfall. If the temperature under the clouds is higher than 0°C, sleet and snow may occur.
Extended information:
In nature, due to different climatic conditions, water will also appear in the form of fog, dew, etc.
(1) Fog
When the water vapor in the air is sufficient, the breeze and the atmosphere are stable, when the relative humidity reaches 100%, the water vapor in the air will condense into fine fog. Water droplets suspended in the air reduce visibility at ground level, a weather phenomenon called fog. Conditions for formation: First, cooling, second, humidification to increase water vapor content. Types include radiation fog, advection fog, mixed fog, evaporative fog, etc.
(2) Dew
On a clear, cloudless night with a gentle breeze, because objects such as flowers, plants, and stones on the ground dissipate heat faster than the air, the temperature is lower than the air. When the air (air generally contains water vapor) encounters these lower-temperature objects, it will become saturated and condense into small water droplets that remain on these objects. This is the dew we see.
Baidu Encyclopedia - Rain
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Baidu Encyclopedia-Fog
Baidu Encyclopedia-Dew
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