Why are there clouds in the sky 15, why are there clouds in the heavens?

1. Clouds are formed by the condensation of water vapor in the air into solid particles in the air, so the formation of clouds must have the following conditions: first, there must be solid particles in the air; Second, there should be water vapor in the air; Third, the surface temperature of solid particles is lower than the temperature of water vapor.

Second, the reason why solid particles float is because of the buoyancy of air;

3. Affected by gravity, the air becomes thinner the higher it goes, and the buoyancy of the air is gradually less than the gravity of the solid particles, so the solid particles no longer float, but stay in "mid-air";

Fourth, the thinner the air in the air, the less solar heat it absorbs, so the higher the air temperature, the lower the temperature;

5. When the water vapor rises to a temperature lower than its own height, it condenses on the surface of the solid particles and forms a cloud;

6. The floating of solid particles is limited by height, so the cloud is also limited by height, so there is no cloud at a certain height.

When the water vapor rises, the temperature decreases, and the water vapor condenses, and the water droplets float in the air, becoming clouds.

There will be clouds in the sky because of the process of cooling and condensation of water vapor in the atmosphere.

1. Evaporation. The heat of the sun causes water on Earth, such as oceans, lakes, and rivers, to evaporate into water vapor. Water vapor is an unseen gas state of the water foreword.

2. Rising air.

Warm air rises, and by ascending, it encounters colder air and gradually cools as the altitude increases.

3. Cooling and condensation.

When the water vapor cools to a certain point, it condenses into very small drops of water or ice crystals. These water droplets or ice crystals form tiny water droplets or ice crystals that form clouds around tiny particles in the air (such as dust, salt particles, etc.).

4. Cloud formation.

When a large number of condensed water droplets or ice crystals come together, visible clouds are formed. Clouds come in different shapes, heights, and types, such as cirrus, cumulus, and stratus, among others.

Clouds are formed when water vapor in the atmosphere cools, condenses, and gathers together. Clouds are a beautiful and magical phenomenon in nature, and at the same time one of the important indicators of weather conditions.

Common types of clouds

1. Cumulus clouds, white, fluffy, and stacked clouds, shaped like cotton balls or fountains, are commonly found in clear skies. They usually indicate good weather, but can also develop into thunderstorm clouds at times.

2. Altocumulus, white or gray clouds, showing undulating waves or washing. They are located in the mid-layer atmosphere and usually have no precipitation, but can mean changes in the weather.

3. Stratus clouds, continuous gray clouds in the low-altitude layer, usually formed under a wide range of water vapor saturation conditions. They are wide, uniform clouds that often bring cloudy skies, light precipitation, or mist.

4. Cirrus, elongated, fibrous clouds in the upper layer, usually white or pale blue. They represent stable weather conditions at high altitudes and indicate the possibility of changes in the weather.

5. Cumulonimbus, large, vertical clouds, usually present a towering tower-like structure with a dark, thick base. They are thunderstorm clouds that are accompanied by lightning, thunder, heavy rainfall, and possible severe weather phenomena such as high winds, hail, etc.

When the air is drier, the temperature is not too high, or the air is more stable, there are few or no clouds in the sky.

The clouds in the sky are formed by the rise and cold of hot air containing a large amount of water vapor; Or it is formed by the meeting of hot and cold air, so when the air is drier, the temperature is not too high, or the air is more stable, there are few or no clouds in the sky.

Sometimes, the pressure of the lower layer decreases, and the cold air in the upper layer decreases, turning from cold to hot, the temperature rises, and the water evaporates, even if there are clouds in the sky, it disappears.

This is mainly caused by the movement of air, and the clouds are water vapor floating in the air. The air is also constantly flowing in the air. The movement of the air is the wind, which blows away the clouds. The faster the air moves, the faster the clouds go.

Clouds are the tangible result of the vast water cycle on Earth. When the sun shines on the surface of the earth, water evaporates to form water vapor, and once the water vapor is supersaturated, water molecules collect around fine dust (condensation nuclei) in the air.

The resulting water droplets, or ice crystals, scatter sunlight in all directions, which gives the appearance of a cloud. In addition, clouds can take on a variety of shapes, and they are divided into many types depending on the height and shape of the sky.

Because the reasons for the formation of clouds include thermal action, cold and warm air confrontation, topography and other factors, when these factors change, the clouds will also change, so there are various clouds in the sky.

The process of cloud formation: water vapor enters the lower atmosphere from the evaporation surface, where the temperature is high, and more water vapor is contained, if this hot and humid air is lifted, the temperature will gradually decrease, and at a certain height, the water vapor in the air will reach saturation.

If the air continues to be lifted, excess water vapor will be precipitated. If the temperature there is higher than 0, the excess water vapor liquefies into small droplets; If the temperature is below 0, the excess water vapor condenses into Xiaoice crystals. When these small water droplets and Xiaoice crystals gradually increase to the point where the human eye can recognize them, what we call clouds are formed.

(i) Cirrus clouds.

Delicate and scattered, with fibrous tissue, like feathers, hair or ponytail, lonely in the air without clouds, orange or red at sunrise and sunset.

Cirrus clouds are one of the highest clouds, and the sun appears early in the morning before the horizon.

ii) Cirrostratus.

It is the tallest and whitest cloud curtain, and when the sun or moon is obscured, its outline can still be seen, and a halo often appears around it. Wherever there is a halo in the sky, there must be cirrocumulus clouds, but thick cirrocumulus clouds are pulled to the edge of the sky like a curtain.

iii) Cirrocumulus.

These clouds rarely appear, and occasionally they cover the whole day, which fishermen call mackerel days, because the sky seems to be covered with fish scales, and the individuals are small, white and cloudless, sometimes wavy. Cirrocumulus occurs mostly at the same time as cirrus or cirrostratus.

iv) Altostratus.

Most of the high-rise clouds are covered throughout the day, and when they gradually thicken and stool low, they make people feel gloomy. When it turns into a cumulus cloud, there is often a sparse low rainfall.

Conversely, Altocumulus is also formed by the elevation of Nimbostratus.

v) Altocumulus.

Altocumulus is larger than Cirrocumulus, ** cloudy, often connected, the bottom is wavy, or arranged in a long column, or intertwined into a checkerboard, and its style is many.

vi) Stratocumulus.

The individual is larger than Altocumulus, softer in appearance, and less pronounced in structure. If they are joined together, the bottom has a wavy pattern and shades of light and dark gray.

Stratocumulus clouds are mostly like giant rollers, and below the base of the cloud represents the troposphere. Most of the common sea of clouds in high mountains are Stratocumulus clouds.

vii) Stratus.

Stratus is a uniform grayish-white low cloud that resembles fog but does not meet the ground. When it is halfway up the mountainside, there is a downward posture at the edge, and when it reaches there, it is a thick fog.

viii) Nimbostratus.

It is a typical bad weather cloud, dark and amorphous, much like a broken cloud, which makes the sky therefore dark, and whatever is persistent and must have fallen in Nimbostratus clouds.

ix) Cumulus clouds.

It looks like a pile of cotton, with an uneven top and a bulge like a mound, cauliflower, or tower. When sunlight is obliquely shining, the light and dark sides of cumulus clouds are noticeable, if.

In the same direction as the sun, ** dark and particularly bright edges.

x) Cumulonimbus clouds.

It is the thickest and most massive cloud, stretching very high vertically, dark and indistinguishable at the base, towering like a mountain or a tower at the top, and often with anvil-like pseudocirrus, making a huge lupine sticking out, and when the cumulonimbus cloud is already at the zenith, there is about to be a heavy thunderstorm.

The water on the ground absorbs heat and turns into water vapor, which rises to the upper layer of the sky vapor. Due to the low temperature of the upper layer of the vapor layer, the volume of water vapor decreases, the specific gravity increases, and the steam decreases. Due to the high temperature below the vapor layer, it absorbs heat during the descent process, rises again to cool, and then descends, so that the volume of the gas gradually decreases, and finally concentrates on the bottom layer of the vapor layer.

A low-temperature zone is formed at the bottom layer, and water vapor is concentrated in the low-temperature zone, which forms a cloud.

Clouds are water vapor or small water droplets floating in the air.

The water on the ground turns into water vapor when exposed to the sun, and the water vapor rises into the air along with the hot air from the ground. The temperature in the upper air is relatively low, and when the water vapor meets the cold air, many small water droplets are formed. These small droplets are very light, they are held up by the rising air, they float around in the air, and when they gather together in large numbers, they form clouds in the sky.

When the sun shines on the Earth's surface, the water evaporates to form water vapor, and once the water vapor is supersaturated, water molecules collect around the dust (condensation nuclei) in the air, and the resulting water droplets or ice crystals scatter sunlight in all directions, which gives the appearance of clouds. But if the amount of water vapour is insufficient, it is not enough to form clouds.

It's like sometimes you're sick and sometimes you're not.