What is snow? What are the weather signs?

Snow is a natural phenomenon. The water vapor in the air condenses and then falls to the ground again. Water is the foundation of all kinds of life on the earth, and its changes and movements have created our world today.

On the earth, water is constantly circulating. The water in the ocean and on the ground is heated and evaporated into the sky. The water vapor moves to other places with the wind. When they encounter cold air, they form precipitation and return to the earth's surface. There are two kinds of precipitation: one is liquid precipitation, which is rain; The other is solid precipitation, which is snow or hail.

Weather signs, also called weather symbols, are simple symbols used to express weather, and are often used in sunny days, rainy days, foggy days, etc.

Extended data:

1, Qing:?

2. cloudy:

3. At night:

When observing a certain weather phenomenon, meteorological observers should record the corresponding symbols in the "Weather Phenomenon" column of the observation record book of the day, except for a few phenomena, and also record the starting and ending time. Based on these symbols, combined with the intensity, coexistence and some characteristics of weather phenomena, a group of symbols that can be filled in weather maps are called cartographic symbols.

Baidu encyclopedia-weather symbols