How snowflakes are formed How snowflakes are formed

Snow is solid water in the form of snowflakes that fall to the ground from mixed clouds, and water is a natural phenomenon in which water condenses in the air and falls at extremely low temperatures.

Because of the cold weather, it will be formed.

Snowflake, also known as silver millet, jade dragon, jade dust, is a kind of crystal, is the water vapor in the sky through the condensation of solid precipitation, the structure changes with the change of temperature, mostly hexagonal, like flowers.

There are so many shapes of snowflakes that each snowflake is an extremely delicate pattern that even many artists have admired. Snowflakes are mostly hexagonal in shape, and this is because snowflakes belong to the hexagonal crystal system. Snowflakes in the clouds"Embryos"There are two main shapes of Xiaoice crystals.

One is hexagonal, long and thin, called column crystal, but sometimes its ends are pointed, like a needle, called needle crystal. The other is in the form of hexagonal flakes, like the flakes cut from a hexagonal pencil, called flakes.

Xiaoice is changed by the increase of small ice crystals, and the ice molecules are hexagonal for the most, so the formation of snowflakes is mostly hexagonal, and the shape of each snowflake is not exactly the same. The variety of snowflake shapes is closely related to the water vapor conditions at the time of its formation.

Close-up of snowflakes (20 photos).

For hexagonal flake ice crystals, due to the different degrees of curvature on their surfaces, edges and corners, they correspondingly have different saturated water vapor pressures, among which the saturated water vapor pressure on the corners is the largest, followed by the edges, and the smallest on the plane. In the case of the same water vapor pressure, the condensation growth of ice crystals is also different due to the different saturated water vapor pressures on the surface, edges and corners of ice crystals. If the water vapor in the cloud is not very abundant, the actual water vapor pressure is only greater than the saturated water vapor pressure of the plane, and the water vapor only condenses on the surface, and the formation is a columnar snowflake; If there is a little more water vapor, the actual water vapor pressure is greater than the saturated water vapor pressure on the edge, and the water vapor will condense on the edge and on the surface, because the speed of condensation is also related to the degree of bending, the condensation is faster in places with a large degree of bending, so the condensation on the edge of the ice crystal is faster than that on the surface, and more flakes are formed at this time; If the water vapor in the cloud is very abundant, the actual water vapor pressure is greater than the saturated water vapor pressure on the corner, so that there are water vapor condensation on the surface, on the edge, and on the corner, but the position at the sharp corner is prominent, the water vapor ** is the most sufficient, and the condensation grows the fastest, so it forms more branch-like or star-shaped snowflakes, so it is also known as six out.

In addition, the constant movement of ice crystals and the changing temperature and humidity conditions in which they are exposed make the various parts of the ice crystals grow at different rates, forming a variety of snowflakes.

I hope I can help you with your doubts.

When the winter temperature drops below 0, the water vapor in the air condenses into Xiaoice crystals in the clouds. Water vapor is formed when ice crystals in clouds collide with supercooled water droplets and evaporate. As the water vapor condenses, it gradually increases in size and slowly turns into snowflakes.

Snowflakes need some basic conditions to match. The atmosphere needs to have a lot of water drops in order to saturate the atmosphere. At the same time, the temperature of the atmosphere hovers around the temperature at which water condenses, which is zero degrees Celsius.

In the air, water droplets need to adhere to some substances in order to solidify, and dust is the easiest to find in the atmosphere, but smoke and even bacteria can also be used as desired condensation particles. Formation of snowflakes: Under normal circumstances, water vapor condenses into water before it can freeze, but snowflakes are formed directly from water vapor condensation, a process also called "condensation".

When the temperature drops and the water vapor in the air becomes supersaturated, it begins to crystallize on the crystal nucleus and gradually grows to form snowflakes.

Snowflakes are formed by the condensation of water vapor in the air. In general, water vapor condenses into water before it freezes. Snowflakes are formed directly from the condensation of water vapor.

When the supercooled water droplets collide with the ice crystals, they freeze and stick to the surface of the ice crystals, causing them to grow rapidly. When the Xiaoice crystal grows large enough to overcome the resistance and buoyancy of the air, Chunchangwu falls to the ground, which is the snowflake.

What color is the snowflake, it seems, the snowflake is white. Actually, snow is a crystal of ice, and ice crystals are colorless and transparent. But each side of it resembles a small mirror, and its ability to reflect light is very strong, and it shows white color.

How big are the snowflakes, and the largest snowflakes are more than 2 mm in diameter. Our common goose feather snow, the kind of snow flakes that seem to be formed by many snowflakes sticking together during the landing process.

Snowflakes weigh much, snowflakes are very light, 5,000 to 10,000 snowflakes only weigh a piece or a gram. There are between six billion and eight billion snowflakes in one cubic meter of fresh snow.

The most conducive area for snowfall is hybrid clouds. Hybrid clouds are made up of Xiaoice crystals and supercooled water droplets. While a mass 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, but the supercooled water droplets are evaporating, and ice crystals are generated from the supercooled water droplets"Adsorption"The phenomenon of water vapour. In this case, the ice crystals grow quickly.

After the snowflakes are formed, when they fall and encounter other snowflakes, they often stick together and slowly grow into a large snow with a diameter of several centimeters like cotton and goose feathers. If the temperature of the air in the lower levels is below 0 and the snowflakes fall to the ground, this is the snow that people see.

It's made with a potion.

The main ingredient of the potion is potassium dihydrogen phosphate, which is a substance that is easy to crystallize. The crystallization principle is: when the paper tree is immersed in the aqueous solution of potassium dihydrogen phosphate, the solution spreads in the paper tree by capillary action, and with the evaporation of water, the crystallization phenomenon will occur, forming "snowflakes".

Potassium phosphate monobasic is a chemical with the chemical formula KH2PO4. There is deliquescent. When heated to 400 °C, it melts into a transparent liquid, and after cooling, solidifies into an opaque glassy potassium metaphosphate.

Stable in air, soluble in water, insoluble in ethanol. It is used as a buffer and culture agent in industry; It is also used as a bacterial culture agent to synthesize sake, a raw material for the preparation of potassium metaphosphate, and a culture agent, a strengthening agent, a leavening agent, and a fermentation aid for brewing yeast. It is used as a high-efficiency phosphorus and potassium compound fertilizer in agriculture.