The clouds are made up of water vapour cooling and condensing in the atmosphere. When the sun rises to the earth's surface, it warms the ground and produces hot air. These hot airs rise up to the sky, where the water vapour cools and condenses into tiny water drops or ice crystals. These tiny water drops or ice crystals gather together to form the cloud.
The shape and size of the cloud depends on many factors, including temperature, humidity, wind speed and terrain. For example, if the temperature is low enough, the end cloud may become thicker and larger; if the humidity is high, the cloud ends.
It may be lighter and thinner.
Because clouds are constantly changing and may appear at different times and places, it is difficult to find an image that fully represents how the clouds are made up. However, it is possible to see the current clouds and their composition processes by searching for relevant scientific images or using weather forecasts.
What causes clouds to form
Clouds are condensed into small water drops or ice crystals by the cold of water vapour in the air, concentrating the natural phenomena formed hanging in the air.
When the water is evaporated by the sun, the water in the river lake sea evaporates into water vapor into the air.
2. raise cooling: warm moist air is blown up by the wind or mountains are forced to rise, and the temperature drops to the point of condensation.
0 3. microparticle condensation:
1 water vapor is attached to the dust, salt particles and other condensation nuclei, condensing into the clouds visible to the naked eye.
2
3 usually the higher the cloud, the thinner it is.
It is because the high air temperature is low and the nucleus is less condensed. The common cotton clouds in the summer afternoon are the masterpiece of the surface heating that produces rising air flows, while the clouds of the dark rain are mostly formed by the slow rise of large-scale warm air flows.
judge the type of clouds that can be noticed when the weather: the thriving clouds usually predict sunshine, the grey rain clouds often bring continuous rainfall, and the horse-shaped clouds are often a sign of weather disturbance. Folk tradition of the "cover clouds, rainfall on the ground" is precisely the summary of the experience of predicting rainfall by observing the characteristics of the clouds.
How is the shape of the clouds formed?
water vapor condensation or condensation : If the air continues to be raised, the excess water vapor will dissipate. When the temperature is higher than 0 °C, the water vaporizes into small drops; when the temperature is lower than 0 °C,
The water vapour is directly condensed into small ice crystals. These small water drops or ice crystals hang in the air and form tiny particles.
The conditions of cloud formation: When the small water drops or ice crystals gradually multiply and reach the size recognizable by the human eye, the clouds form. The shape and structure of the cloud depends on the height of water vapour condensation or condensation, the temperature and the flow movement of the air.
In addition, the appearance of the clouds is closely related to its thickness and composition:
The color difference between thick clouds and thin clouds: very thick
A layer cloud or a cloud of rain is difficult to permeate because of the light and appears black; a slightly thin layer cloud or a wavelength cloud is grey, especially the edge of a wavelength cloud is grey; a very thin cloud (such as a shadow cloud) is easy to permeate, the cloud appears bright in the sunlight, and even the ground objects can still project shadows.
The dark contrast of a cloud of clouds is : isolated clouds are white to the sun’s surface because of the reflection of the sunlight, and the back or bottom of the light is dark because of the difficulty of transmitting the light. When the sun rises or sunsets, the sunlight slides, short waves are scattered, long-wave light (such as red light) dominates, causing the clouds to become dark.
The bottom and edge of the layer appear red.
special optical phenomenon : clouds consisting of water drops, ice crystals or a mixture of both, and when the sunlight passes through it, a beautiful ring or rainbow may form.
How is the shape of the cloud formed? Water vapour evaporated from the sea and the surface of the earth turns into water drops and ice crystals in the air, gathering and floating in the air, which forms a cloud. Like the heat gas we breathe in the winter in the cold air becomes white, the air containing water vapour, as it rises and gradually turns into water drops, the temperature decreases.
The white water vapour that humans breathe will disappear immediately and will never form a cloud. Because the white water vapour that humans breathe is smaller than the particles of the cloud, and it is very dry, so it evaporates immediately and becomes water vapour. And the cloud, even a very small cloud, contains hundreds of tons of water! In addition, the cloud is not only caused by cooling cold air. The moist air cluster is driven by the rising air flow, with the reduction of air pressure, the volume will expand (heat expansion). At this time, the expanding air cluster has a low temperature variation, and the air after cooling forms a cloud.
It seems to be a cause. But the clouds can change shape at the same time, gather together and move with the wind, and it looks like the particles of the clouds are intertwined and retain various shapes. If this is true, we can imagine that the small cloud particles are intertwined and gradually become larger, and what will happen at the end? It will immediately turn into rain to the ground, that is, not into clouds. Of course, in fact, it is also true that it is as rapidly expanding in repeated conflict as the clouds of the clouds, about 30 minutes into the clouds of rain or ice down to the ground.
When water drops fall in the clouds, the speed is very slow, such as a drop of 10 micrometers is about 1 cm per second. Moreover, the rising airflow in the clouds is working, it can immediately take the clouds up. In addition, the clouds are not simply floating in the sky, but under the effect of rising airflow, constant water vapour is brought up from the bottom of the cloud, continuously being supplemented with new water drops, so you can maintain a certain shape for a longer period of time. So why are there different shapes of clouds?" rising airflow strength, water drops or ice crystals differences, causing the shape and species of the clouds.
The class varies. For example, the heat-to-air flow generated by sunlight and the large amount of water vapour on the high-pressure air flow band, will form rolling clouds and clouds of rain; and the shaped clouds painted with brushes, is the effect of the weak rising air flow generated in the high air, the water vapour is formed after elevation.
The clouds, like humans, are constantly metabolized. In constant change, the clouds show their unique shape, interact with the surrounding environment, form a wonderful natural scale. Let us explore the mysteries of the clouds together, feel the magic and beauty of nature.