Why does it rain in the sky, the short sky is simple for the reason why it rains

1. The rain in the sky comes from the clouds in the sky, and the clouds in the air are actually the condensate of water, which comes from the evaporation of water vapor on the ground. When the water droplets in the cloud reach a certain level where they cannot be supported by the rising air currents, the water droplets (which may also be ice drops, snowflakes) fall to the ground.

When the temperature is high, the amount of water vapor that can be held is large, and when the temperature is low, the amount of water vapor that can be held in the air is less. When the air moves from high temperature to low temperature, the water vapor will change from unsaturated to supersaturated, and then the water vapor will condense into water droplets, and when the weight of the water droplets exceeds the buoyancy of the air, rain will fall.

3. As rivers, rivers, lakes and seas are exposed to the sun, water becomes water vapor.

The water vapor rises and turns into small water droplets or Xiaoice crystals, and the air flow below is constantly transporting the water vapor to the clouds. The small water droplets and Xiaoice crystals in the cloud collide with each other in motion, and the volume will increase. The water droplets in the lower layer of the cloud slowly get larger, and as the volume of the ice crystals in the upper layer of the cloud increases, the water droplets fall between the droplets in the lower part of the cloud, and the water droplets become larger and larger.

When these droplets are so big that the updrafts can't hold them back, it rains.

Rain is a natural phenomenon, when the clouds on the sky reach a certain thickness, the water droplets that make up the clouds will naturally fall to form rain, the rain is the water on the earth after being irradiated by the sun, the formation of water vapor, the water vapor evaporates and rises into the air, encounters cold air in the air, the water vapor condenses into water droplets, condensation releases heat, heats the temperature, so the warm air will continue to rise, and then when it is cold, the water vapor continues to condense, and so on, the updraft can be extended from low altitude to 10,000 meters altitude. At higher altitudes, when the temperature is lower than 0 degrees, ice crystals appear, small water droplets and ice crystals form cumulonimbus clouds, when the ice crystals in the clouds collide and merge with each other, some water vapor directly adheres to the surface of the ice crystals, and the Xiaoice crystals will grow, and when the updraft cannot support it, it will fall under the action of gravity, and it will become rain.

Cumulus congestus, with strong updrafts, is likely to evolve into cumulonimbus.

Signs of Cirrus clouds, warm fronts or prison fronts.

Cirrocumulus is caused by Altocumulus flocculus, unstable fluctuations in the upper atmosphere.

Cirrostratus, Altostratus and Nimbostratus are caused by the expansion and cooling of moist air over a wide area of slow upward movement, and are associated with cyclones and warm fronts. If the latter two are present, precipitation may have already occurred.

The English words that mean the weather are:

1. Adjectives: cloudy, rainy, sunny, indy, snowy.

2. Verbs: rain 下 , snow 下 , shine shine , blow blow, thunder .

3. Noun: rain rain , snow , sun sunshine sunshine, wind , cloud cloud, storm rainstorm, thunderstorm thunderstorm , thundershower lightning lightning , snowstorm , rainstorm storm.

Word usage:

1. Climate generally refers to "the regular climate of a certain Tanshan", which is a law accumulated between the long-term buried signal zones, such as "Shanghai is very humid on rainy days". weather refers to "the temporary climate of a certain place", such as "it rains in the morning and turns sunny in the afternoon"; It is not possible to put an article A before weather.

2. weather can appear in the plural form weathers, such as in all weathers, which means "no matter where the reed is in the weather".

3. This weather can sometimes be equated with in this weather.

why are all the windows open this weather?

Why are all the windows open in this weather?

Rain is the water droplets that fall from the clouds, the water on the surface of the land and the sea evaporates into water vapor, the water vapor rises to a certain height and becomes small water droplets when it is cold, these small water droplets make up the clouds, they collide with each other in the clouds, merge into large water droplets, and when it is too big for the air to support, it falls from the clouds and forms rain. Rain can occur in a variety of ways, from drizzle to continuous rain and downpour showers. Rain is the most important source of fresh water in human life, and plants must also be nourished by rain and dew to thrive.

But flooding caused by heavy rains can also bring great disasters to human beings.

When water on Earth is irradiated by sunlight, it becomes water vapor and evaporates into the air. When water vapour meets cold air at high altitude, it condenses into small water droplets. These small droplets are small, with a diameter of only millimeters and a maximum of millimeters.

They are small and light, held in the air by updrafts in the air. It was these small droplets of water that gathered together in the air to form clouds. For these small droplets to fall to the ground as raindrops, they would have to increase in size by more than 1 million times.

How do these small droplets grow their size to more than 1 million times? It mainly relies on two means, one of which is condensation and condensation increase. The second is to rely on the collision and increase of cloud droplets.

In the early stages of raindrop formation, cloud droplets mainly rely on the continuous absorption of water vapor around the cloud body to condense and condense themselves. If the water and gas energy sources in the cloud are constantly replenished and the surface of the cloud droplets is often supersaturated, then this condensation process will continue, causing the cloud droplets to grow and become raindrops. However, sometimes the amount of water vapor in the cloud is limited, and in the same cloud, the water vapor is often in short supply, so that it is impossible to make each cloud drop increase into a larger raindrop, and some smaller cloud droplets have to be merged into the larger cloud droplets.

If water droplets and ice crystals coexist in the cloud, the process of condensation and bloom increase will be greatly accelerated. When the droplets in the cloud increase to a certain extent, due to the increasing size and weight of the large droplets, they will not only catch up with the slower small droplets in the process of descending, but will also "swallow" more small droplets and make themselves stronger. When the large cloud droplets grow larger and larger, and finally the air can no longer support them, they fall straight from the clouds to the ground, becoming our common rain.

Rain is a natural phenomenon, so why does it rain?

The water on the ground is evaporated by the sun, from a liquid state to a gaseous state, and then floats into the air, where it is cold in the atmosphere, and then changes from a gaseous state to a liquid state, and when the liquid water weighs to a certain extent, it falls and it rains.

Because the clouds are tired and need to cry for a while.

Hello dear. The reason why it rains in the sky: 1. Rain is one of our most common natural phenomena, and its generation is due to the evaporation of surface water such as rivers, rivers, lakes, and oceans by the sun to form water vapor.

2. It often rains in summer, especially at night. This is because the air in the summer is very humid and the air contains a lot of moisture, so it rains in the summer. At night, there is no sunlight in the atmosphere, and small moist water droplets in the air are more likely to condense to form thick clouds, so it is easier to rain at night than during the day.

3. Rain is caused by clouds that are large enough to form by the aggregation of small water droplets, so to what extent do clouds form rain? Scientists have shown that small water droplets eventually exceed the load of clouds by at least 1 million times through the condensation of water droplets and the collision and annexation of cloud droplets.