There is no such thing as dust involved in the formation of snow

Yes, snow or rain is formed by the moisture at high altitude touching dust and other tiny particles slowly gathering to form small Xiaoice crystals or small water droplets, and then falling and then expanding further.

No, snow is formed at high in the air, and there is very little dust in the high air.

Some. Because it snows like rain. There's dust and stuff like that.

Of course there is, condensation nuclei.

1. Snow is formed by direct condensation of water vapor in the atmosphere. The low temperature in the clouds causes the water vapor to form ice crystals, and when the temperature is low enough, the ice crystals fall to the ground and are still snowflakes, which is snow. Snow absorbs heat as it melts, so the ground air temperature will be lower when it melts than when it snows.

2. The conditions for the formation of snow are that the atmosphere needs to contain cold ice crystal nuclei, sufficient water vapor, and the air temperature must be below 0 (freezing point).

1.When the temperature is too low in winter, the water vapor in the air condenses in the clouds and forms Xiaoice crystals.

2.Water vapor is formed when ice crystals in clouds collide with supercooled water droplets and evaporate.

3.As the water vapor condenses, it gradually increases in size and slowly turns into snowflakes.

4.Since snowflakes are formed by the enlargement of ice crystals, and the molecules of ice crystals are mostly hexagonal, Qinkuanyan is also hexagonal.

The direct condensation of water vapor or water droplets in the atmosphere is snow. It can also be said that the temperature in the clouds is too low, and the small water droplets form ice crystals, and when they fall to the ground and are still snowflakes, it is snowing. When ice melts, it traps heat, so the ground air temperature is cooler than when it snows.

Precipitation in many parts of China comes in the form of snow. Solid precipitation in the atmosphere is diverse, including hail, which can cause great harm, in addition to snowflakes, as well as snow hail and ice particles that we don't often see.

The shape of blood. Snowflakes are mostly hexagonal, and the reason why there are many patterns is because the molecules of ice are hexagonal as the most, for hexagonal flake ice crystals, because of the different curvatures on its surface, edge and corner, it has different saturated water vapor pressure correspondingly, wherein the saturated water vapor pressure on the corner is the largest, the edge is second, and the plane is the smallest.

In the case of the same actual water vapor pressure, the condensation growth of ice crystals is also different due to the different saturated water vapor pressures of each part. For example, when the actual water vapor pressure is only greater than the saturated water vapor pressure of 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, condensation will occur on the edge and on the surface.

Because the speed of condensation is also related to the curvature, the condensation is faster in places with large curvature, so the condensation on the edge of the ice crystal is faster than on the surface, and more flakes are formed. When the actual water vapor pressure is greater than the saturated water vapor pressure on the corner, although there are water vapor condensation on the surface, edge, and corner, the position at the sharp corner is prominent. Water vapor ** is the most sufficient, and condensation grows the fastest, so it mostly forms dendritic or star-shaped snowflakes.

Snow formation: In mixed clouds, when supercooled water droplets collide with ice crystals, they freeze and stick to the surface of the ice crystals, causing them to grow rapidly. When the Xiaoice crystals grow large enough to overcome the resistance and buoyancy of the air, they fall to the ground, which is called snowflakes.

Ice clouds are made up of tiny ice crystals. When these Xiaoice crystals collide with each other, the surface of the ice crystals will heat up and melt somewhat, and they will stick to each other and freeze again. This is repeated many times, and the ice crystals increase.

In addition, there is also water vapor in the clouds, so the ice crystals can continue to grow by condensation. However, ice clouds are generally very high and not thick, where there is not much water vapor, and the growth of condensation is very slow, and there are not many opportunities for collisions with each other, so they cannot grow to a large size and form precipitation.

Even if precipitation is caused, it tends to evaporate on the way down and rarely reaches the ground. The most conducive to cloud growth is hybrid cloud. Hybrid clouds are made up of Xiaoice crystals and supercooled water droplets.

While a cloud of air is said to be saturated with ice crystals, it is not yet saturated with water droplets. At this time, the water vapor in the cloud condenses on the surface of the ice crystals, while the supercooled water droplets are evaporating, and the ice crystals "adsorb" water vapor from the supercooled water droplets. In this case, the ice crystals grow quickly.

In addition, supercooled water is very unstable. As soon as you touch it, it freezes.