1. ant manor small classroom page, today's topic: which of the following ancient poems describes the light snow season? A mica powder is spread all over the world. B. White sand embankment under the shade of Populus davidiana. Correct answer: mica powder is all over the world. "Mica powder scattered in the world" comes from a seven-character poem "Sudden cold and light snow in late October" by Lu Wengui, a poet in the Song Dynasty.
This poem expresses the feeling of cold in winter by describing the sudden cold and light snow in late October. "Qingyang Li Yin Baishadi" comes from "Spring Tour in Qiantang" written by Tang Dynasty poet Bai Juyi. By describing the beautiful scenery of the West Lake in early spring, this poem expresses the author's joy in visiting the lake in early spring and his love for the scenery of Qiantang River, as well as his love for the beauty of nature.
Reasons for the formation of light snow
1, Xiaoxue, a solar term name in China meteorology, is also a reflection of the weather conditions during the slight cold solar term. However, when we talk about the reasons for the formation of "light snow", we usually refer to the formation process of snow. Water molecules can exist in air in three forms: gas, liquid and solid. When air cools, water molecules will condense into water droplets or ice crystals.
2. If the diameter of water droplets or ice crystals is small enough (less than 100 micron), they will become the fog or clouds we see. When the air cools further, the water droplets in the cloud will begin to freeze. This is because water molecules lose energy at low temperature, which causes them to arrange into a more compact structure-ice.
3. This icing phenomenon will produce weight in the clouds, which will make the clouds heavy enough to start falling. In the process of falling, ice crystals will merge with other ice crystals or water droplets to form larger ice crystals. When these ice crystals are large enough, they will fall to the ground and form the snow we see. This process usually occurs when the temperature is below 0℃, because at this temperature, water droplets and ice crystals can exist stably in the atmosphere.
The formation of snow is also influenced by many other factors. For example, the humidity and wind speed in the air will affect the formation and moving speed of clouds. In addition, topography and climatic conditions will also affect the formation of snow. For example, on high mountains, it is usually easier to snow because of the large temperature difference.