The poem about snow in junior high school is as follows:
1. Everywhere in life is similar, it should be like a flying dragon stepping on snow mud. ——Su Shi's "Hezi's Nostalgia from Mianchi"
2. The plum blossoms are less white than the snow, but the snow loses some of the fragrance of the plum blossoms. ——Lu Meipo's "Snowy Plum Part 1"
3. Suddenly, as if a spring breeze came overnight, thousands of pear trees bloomed. ——Cen Shen's "Baixuege Sends Magistrate Wu Back to the Capital"
4. Baixue disliked the late spring scenery, so he walked through the trees in the garden to make flying flowers. ——Han Yu's "Spring Snow"
5. Where is my home in the Qinling Mountains where the clouds are rising? The snow embraces the blue and the horse stops moving forward. ——Han Yu "Moving to Languan from the left to show his nephew Xiang"
6. The window contains the snow of Qianqiu in the Xiling Mountains, and the door is docked with ships thousands of miles away from Dongwu. ——Du Fu's "Quequatrains"
7. Thousands of miles of yellow clouds are shining in the daytime, and the north wind is blowing geese and snow. ——Gao Shi's "Two Songs of Farewell to Dong Da"
Expand knowledge - Snow
Snow refers to solid water in the form of snowflakes that falls to the ground from mixed clouds. Precipitation composed of large amounts of white, opaque ice crystals (snow crystals) and their polymers (snow masses). Snow is a natural phenomenon in which water condenses in the air and then falls, or refers to falling snow; snow is a form of water in a solid state. Snow only appears under the influence of very cold temperatures and extratropical cyclones, so the chances of snowfall in subtropical and tropical areas are slim.
Shape
Snowflakes are mostly hexagonal. The reason why there are so many patterns is because ice has the most hexagonal molecules. For hexagonal flake ice crystals, because their surfaces are , the curvatures on the sides and corners are different, and correspondingly have different saturated water vapor pressures. The saturated water vapor pressure on the corners is the largest, followed by the edges, and the smallest on the plane. When the actual water vapor pressure is the same, since the saturated water vapor pressure of each part of the ice crystal is different, the growth of desublimation is also different.
For example, when the actual water vapor pressure is only greater than the saturated water vapor pressure on the plane, the water vapor only condenses on the surface, forming columnar snowflakes. When the actual water vapor pressure is greater than the saturated water vapor pressure on the edge, sublimation will occur on the edge and on the surface. Since the speed of sublimation is also related to the curvature, places with large curvature will sublimate faster. Therefore, sublimation will occur faster on the edge of the ice crystal than on the surface, and flake-like snowflakes will often be formed.
When the actual water vapor pressure is greater than the saturated water vapor pressure at the corners, although there is water vapor condensation on the surface, edges, and corners, the sharp corners are prominent. The supply of water vapor is the most abundant and the sublimation grows fastest, so dendritic or star-shaped snowflakes are often formed. In addition, the ice crystals are constantly moving, and the temperature and humidity conditions they are in are also constantly changing. This causes the growth rates of various parts of the ice crystals to be inconsistent, forming a variety of snowflakes.
The formation of snow
Snow is formed by direct sublimation of water vapor in the atmosphere or direct solidification of water droplets. It can also be said that the temperature in the cloud is too low, and the small water droplets form ice crystals. When they fall to the ground and they are still snowflakes, it is snowing. Ice absorbs heat as it melts, so the ground temperature will be cooler than when it snows.