If there is no dust, clouds, fog, rain and snow will form in the sky

It would be the formation of clouds without dust.

The formation of clouds is simply said to be the formation of small water droplets or Xiaoice particles formed by condensation when water vapor is cooled and liquefied at high altitudes, or some are formed by condensation.

If we know evaporation, sublimation, condensation, and condensation, it is easy for us to understand how clouds are formed. The water in the ocean, lakes, plant surfaces, and soil evaporates all the time, turning into water vapor and entering the atmosphere. Moist air containing water vapor rises upwards for some reason.

During the ascent process, as the surrounding air becomes thinner and thinner, the air pressure becomes lower and lower, and the volume of the rising air expands. When it expands, it dissipates its own heat, so the temperature of the rising air decreases. When the temperature decreases, the ability to contain water vapor becomes smaller and smaller, the saturated water vapor pressure decreases, the water vapor in the rising air quickly reaches a saturated state, and the temperature decreases again, and the excess water vapor attaches to the condensation nucleus suspended in the air and becomes small water droplets.

If the temperature is lower than 0, the excess water vapor condenses into ice crystals or supercooled water droplets. They are gathered together, supported by updrafts, and float in the air as clouds that we can see.

Yes, there is no dust, but there is still water vapor in the atmosphere, and the water vapor will condense into small water droplets when it is cold, forming clouds, fog, rain and snow.

It's not that it can't, it's that it's hard to form.

If there is no dust, condensate can also be formed, but the ambient humidity needs to reach 400%-600%, but this condition is almost impossible to achieve under the natural conditions of the earth's environment.

So, the conclusion is that without dust in nature, it is almost impossible to form clouds, rain and snow. When the critical humidity is reached, rainfall will occur directly.

Hopefully, the landlord will be satisfied with this answer.

Dust is the carrier, and the tiny liquid floats in the sky at a certain distance and gathers together with the dust, and floats at a certain height in the sky by buoyancy, and it becomes a cloud. The density of the liquid in the cloud is so dense that its gravity is greater than the buoyancy and it becomes rain when it falls. After a sharp drop in temperature, the liquid falls and becomes snow.

Or dust provides a nucleus for the agglutination and coagulation of water vapor, and the moisture around this dust nucleus is easy to agglutinate and adhere to the dust, and it is easier to accumulate larger and larger, so it forms large particle droplets in the cloud, and the large particle droplets become larger and larger, and will fall to form rain, if the outside temperature is low enough, the droplets will solidify to form snow.

The dust provides a nucleus for the agglutination and coagulation of water vapor, and the moisture around the dust nucleus is easy to agglutinate and adhere to the dust, and it is easier to gather more and more, so it forms large particle droplets in the cloud, and the large particle droplets become larger and larger, and they will fall to form rain, and if the outside temperature is low enough, the droplets will solidify to form snow.

When the ground temperature is high, the air is hot, and the hot air is less dense and will rise. As it rises, as the altitude of Shichang increases, the air temperature decreases, and the saturated water pressure in the air also decreases, and the excess water vapor escapes. Water vapor must adhere to dust to condense into small water droplets, with fog near the ground and clouds at high altitude.

When the temperature continues to decrease, the saturated water vapor pressure is still decreasing, and the small water droplets in the air accumulate more and more, and when the mass of the small water droplets is not able to withstand the air buoyancy, it will fall and form rain.

To put it simply, clouds are small floating droplets, rain is falling droplets, the two are the same as fruits, must be around a core to grow, if there is no nucleus, it can not be formed, can not grow quickly, in the high air, can only float up a very fine dust, so dust is very important in the clouds to cause rain.

That's right. If there is no dust in the air and water vapor cannot condense, there will be no clouds in the sky.

Clouds are the vast water cycle on Earth.

tangible results. The sun shines on the surface of the earth, and the water evaporates to form water vapor.

Once the water vapor is cooled and supersaturated, the water molecules.

Clouds are created when they collect around fine dust (condensation nuclei) in the air, and the resulting water droplets or ice crystals scatter sunlight in all directions.

In addition to the two basic conditions of sufficient water vapor and air cooling, there is also one of the most critical factors, which is "condensation nuclei".

If the air is absolutely pure without any impurities, the water vapor molecules in the atmosphere cannot attach to the condensation nuclei and clouds cannot form.

A typical condensation nucleus is dust floating in the atmosphere. Others, such as bacteria, fungal spores, and plant pollen, can also be used as condensation nuclei formed by clouds.