As the saying goes, Snow doesn t get cold, snow turns cold , please explain why

In winter, before or when it snows, the warm and humid air is generally active, the southwest wind blows at high altitude, the weather is somewhat warmer, and the water vapor condenses into snowflakes to release a certain amount of heat, which makes the weather not very cold before or during snow. When the snowfall is over and the weather clears, it is generally accompanied by cold air moving southward, turning northerly at high altitude, and the ground is controlled by cold air masses, and the temperature is obviously going to drop. At the same time, when the snow melts, it absorbs a lot of heat, so the weather is colder than when it snows.

Is it cold when it absorbs heat? Is it warm when it is heated?

Net! Now the answers, the answers in the physics books are all nonsense.

When it snows, if the snow doesn't melt immediately (so-called exothermics), you're dealing with sub-zero air.

When the snow melts, you're dealing with exactly zero air.

You imagine how the heat travels, and which one is cold.

The reason for the cold is two things: 1. People do not feel all the absolute temperature, but also the temperature difference.

2. When melting snow, the air humidity is high and the thermal conductivity is strong. It's easy to get the heat out of the body.

When it snows, the small water droplets in the cloud will release heat in the process of solidifying into a solid state, and when it turns into a solid state, the snow will absorb heat in the process of changing from a solid state to a liquid state, so the snow does not cool and the snow is cold.

Snow is actually loose ice, when the water vapor condenses or the water droplets solidify into solid, it is an exothermic process, and vice versa, it is an endothermic process, so the snow is not cold, and the snow is cold.

Because it absorbs the surrounding heat when melting snow, it is cold.

Because there is still heat around when it snows, and when it melts, the snow absorbs all the heat, so the snow does not turn cold and the snow is cold.

Because the snow is releasing heat, it is hot. The snow melts into the heat, and it gets cold.

When it snows, it's water molecules in the air.

The process of directly changing from a gaseous state to a solid state is also the process of condensation, and the process of condensation is a phenomenon of exothermy, so it is not cold; When melting snow, it is the process of melting or sublimating snow, and the snow melting into water or directly evaporating into water vapor will absorb a large amount of heat, and the snow will absorb heat from the surrounding objects through heat transfer, so that the surrounding spine core objects will be cooled, so it will be cold.

For example, if you pinch a handful of snow and dig it in the palm of your hand, you will feel very cold after a while, and this is the reason.

As the saying goes, snow is not cold, and it is normal for the snow to melt cold, because when the snow melts, the humidity is greater, so the temperature will drop significantly. Because of this, it will be colder when the snow melts.

The reason for melting snow is that snow needs to absorb heat during the melting process, so it is colder when melting snow.

When snow melts, it needs to absorb the heat of the surrounding environment, so there is a saying that "snow does not cool and cold snow".

Vapor (liquid) solids.

Exothermic process. Solid vapor (liquid).

Endothermic process. When it snows, snow does not absorb heat from the air, and when it melts, it absorbs heat from the air, causing the temperature in the air to drop, and people feel cold.

<> "Why do you say that "Huai quietly snows and does not turn snow cold".

As the saying goes, "snow doesn't get cold when it snows", so, is there a scientific basis for this sentence? Is it true that "snow doesn't get cold"?

The so-called "snow is not cold" can be traced back to the formation of snow. Snow is a natural phenomenon of water condensing in the air and then falling. When the temperature in the cloud is too low, the small water droplets form ice crystals, and when the temperature in the cloud is too low, the small water droplets form ice crystals, and when they fall to the ground, they still let the snowflakes talk about it frankly.

What are the conditions for snowfall in winter? First, the atmosphere needs to contain colder ice crystal nuclei; The second is sufficient water vapor; The third is below 0 (freezing point). Before or during snowfall, the cold air is generally moist, and when the water vapor turns into snowflakes, it also releases a certain amount of heat, so the temperature does not drop much, which makes it not very cold before or during the snow.

And why is it "melting snow cold"?

Snow melts when the weather is usually fine, and the temperature begins to drop when the cold air pressure is controlled at low altitudes. Therefore, although the sun is shining, the temperature is still at the "freezing point"; At the same time, the melting snow itself absorbs a lot of heat from the surrounding environment.

In addition, when snow melts, the humidity of the air rises, which reduces the warmth of clothing, and people naturally feel colder. When compared to sunny weather, the feeling of cold is even more prominent, so when the snow melts, it is colder than when it snows.

As the saying goes, snow does not get cold, and when snow melts, it gets colder because the snow melts and absorbs heat and humidity.

"Snow does not cool and snow is cold" because when the snow melts, it absorbs a lot of heat from the surrounding environment, causing the temperature to drop; Melting snow also causes the humidity in the air to rise, which reduces the warmth of the clothes and makes people feel colder.

Snow is not cold because it releases heat when it snows, and snow is cold because it absorbs heat when it melts, so it is said that snow is not cold, and snow is cold.

: When it is about to snow or it is already snowing, the sunlight is obscured by clouds, which can reduce the temperature on the ground. But when water vapor condenses in the air, it emits heat, so we tend not to feel too cold at this time.

When the snow water freezes, it should be heated; The snow and ice melt into water, and it has to absorb heat, so the snow is not cold, and the snow is cold.

When the snow melts, it turns into water, and the evaporation of the water absorbs heat, causing the ambient temperature to drop, causing it to feel cold.

When the snow melts, evaporation takes away some of the heat, so it feels cold.

When it snows, she freezes, and when the snow flakes, it gets cold when there is water.

"Snow does not cool and snow is cold" because when the snow melts, it absorbs a lot of heat from the surrounding environment, causing the temperature to drop; Melting snow also causes the humidity in the air to rise, which reduces the warmth of the clothes, and people naturally feel colder.

Snow is not cold: First of all, the atmosphere of orange pomace needs to contain colder ice crystal nuclei; The second is sufficient water vapor; The third is below 0 (freezing point). Before or during snowfall, the cold air is generally moist, and when the water vapor turns into snowflakes, it will also release a certain amount of heat, so the temperature does not drop much, which makes it not very cold before or during the snow.

Snow melting: Snow melting tends to be a time of fine weather, when the low altitude is controlled by cold air pressure, and the temperature begins to drop. Therefore, although the sun is shining, the temperature is still at the "freezing point"; At the same time, when the snow melts, it absorbs a lot of heat from the surrounding environment.

In addition, when snow melts, the humidity in the air increases, so it reduces the warmth of people's clothes, so it will feel colder.

It shows that the coming year will be a good year. As the saying goes, "snow presses new graves out nobles", and here "snow" refers not only to snow, but also to rain. In the minds of our Chinese, rain is very important, rain and snow mean a good harvest in the coming year, farmers are looking forward to the production of rain and snow, rain and snow cover tombs are considered by everyone to a certain extent as an auspicious event, that future generations will be shaded and blessed.

There are indeed some very reasonable words in rural proverbs, and we must learn to take their essence, discard their dross, and use them dialectically.

Answer: It is because the snow melts and it needs to absorb heat, so the air becomes colder. Therefore, there is a saying that "snow does not turn cold into snow".

Because the snow is releasing heat, it is hot. The snow melts into the heat, and it gets cold.

Why is it that when it snows in winter, people don't feel cold, but when the snow melts, they feel much more cynical? In winter, cold air moves from north to south in waves, and when it meets the warm, moist air from the south, it becomes cloudy and produces snowfall. Before the snowfall, the cold air is weaker (and therefore less windy) and warms up after staying there for a longer period of time, and the air flow from the south brings the warmer air to the north.

When the cold air strengthens, the warm and moist air is lifted up into clouds, and the sky is covered with clouds, as if covered with a quilt, and the heat on the ground is not easy to lose. So, people don't feel as cold before and when it snows in winter. When the cold air continues to strengthen during the snowfall, so that the strong cold air takes control of the area, the snow will stop and the weather will become clearer.

At this time, because the cold air is controlled from the ground to the hollow, and the north wind or northwest wind blows more, the wind is stronger, the cloud dissipates and loses the effect of heat preservation, the reflection effect of the snow surface is larger, and when the snow melts under the sun, it has to absorb a lot of heat from the air layer near the ground and reduce the air temperature. As a result, people feel that it is much colder when the snow melts than when it snows.

1. The meaning of snow is not cold: before or during snow, the cold air carries moisture, and when the water vapor turns into snowflakes, it will release a certain amount of heat, and the temperature does not drop much, so that the snow is not very cold.

2. Reason: When the snow melts, it is often sunny weather, the low altitude is controlled by the cold air pressure, the temperature drops, although the sun is shining, but the temperature is at the "freezing point", and the snow melts will absorb the heat of the surrounding environment. In addition, when snow melts, the humidity of the air rises, which reduces the warmth of clothes and makes people feel colder.

"The snow is not cold, the snow is cold", why is this? Do you know? Snow is not cold Snow is cold, I often encounter this problem, and I often see people explain that snow is water vapor condensation, and heat is released after condensation; As the snow melts, it absorbs heat and cools the air.

This explanation of cold snow is understandable, but the explanation of cold snow is a bit far-fetched. Snow is formed in the form of water vapor condensation, but this process takes place at high altitudes, and the heat emitted has little effect near the ground. In addition, in the process of falling, only the temperature is low enough to fall to the ground in the form of snow, so it is inconceivable that snow is not cold, and everyone has experienced it firsthand.

When it snows, it's colder than when it snows.

When it snows, it's colder than when it snows. Old saying"Proverb"It is the wisdom of working people through long-term observation and personal experience of natural phenomena. There is no quality in the existence and circulation of words.

Scientifically proven. The heat produced by the earth makes us feel warm. When the snow melts and turns into ice water, the ice water melts to the surface and absorbs a lot of heat, so the surface temperature is lower than when it snows.

Gases, liquids and solids. The change in these three - states must have temperature as a condition. Liquid is the normal state of water.

When normal water is heated to a certain temperature, it will become gaseous and then disappear. When it is cooled to a certain temperature, the gaseous water becomes liquid back and then condenses into a solid state.

Snow is one of the solids of water, and the temperature of snow is gradually decreasing, from hot to frozen, and melting snow is from frozen to hot. People's feelings are often wrong and not always right. It feels cold when it's cold, but it gets cold when it's cold.

But melting snow has a reason, it's cold. Melted snow absorbs heat and releases cold air, making people feel that melted snow is colder than snow. Snow is endothermic, while melting snow is the opposite, so there is this feeling.

Rural people always say: snow is not cold and snow is cold, and it makes sense.

But the old saying is based on the experience of many generations of weather phenomena. It corresponds to the facts, but cannot be explained. But modern meteorologists have a scientific basis:

Water droplets in the air will condense into small balls, requiring more cold air to burst into snowflakes. So when it snows, countless ice particles need to absorb a lot of cold air, and of course there will be less cold air"Warm"feelings. But when the snow melts, it needs to absorb a lot of heat from the air to turn the snow into water, so when the snow melts, people feel it"Cold"。