Why does it rain and why does it rain all the time?

As rivers, rivers, lakes, and seas are exposed to the sun, water becomes water vapor. The water vapor rises and turns into small droplets, and finally into clouds. The small water droplets or Xiaoice crystals that make up the cloud are supported by the air flow below, and the rising air flow is constantly transporting the water vapor below the cloud to the cloud.

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 gradually become 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 layer, and the water droplets become larger and larger. When these droplets are so big that the updrafts can't hold them, it rains.

Water from the ground, rivers, ponds, oceans, and lakes is also turned into water vapor and rises into the sky when exposed to sunlight.

Because the sky is cold, water vapor will turn into water droplets when it encounters cold air.

The tiny droplets accumulate and become clouds.

The clouds grew bigger and bigger, and because they were too heavy, they slowly descended.

We know that the higher the place, the colder the air, so the water droplets that gather there will turn into ice particles.

In winter, when the weather is cold, the ice particles turned into these water droplets will turn into snow and fall to the ground.

When it snows, if you encounter warm air on the way, the snow will melt and turn into rain.

However, clouds that are closer to the ground will also turn into rain falling.

When the humidity reaches 100%, it will rain.

The water on the ground evaporates into water vapor, which reaches the atmosphere, and the water vapor will accumulate together, and when it is heavy enough enough, it will be subjected to gravity and fall to the ground, becoming the water cycle.

Isn't it going to kill creatures if it doesn't rain?

From a meteorological point of view, when it rains, the humidity increases, the air pressure decreases, the air pressure changes too much to cause people to have adverse reactions, the air pressure is low, the amount of dissolved oxygen in the blood is low (the atmospheric pressure will directly affect the dissolved oxygen of the human blood, the higher the atmospheric pressure, the stronger the dissolved oxygen ability), resulting in an increased heart rate, shortness of breath, resulting in tiredness, restlessness and other emotions. From another angle, the rain scene is also very beautiful.

The sound of raindrops is also quite nice......

Change the angle, change the mood.

Information**.

The rain in the sky comes from the clouds in the sky, and the clouds in the sky are actually condensates of water, which come from the evaporation of water vapor from the ground. When the water droplets in the cloud reach a certain level, that is, they cannot be supported by the rising air current, the water droplets (which may also be ice drops, snowflakes) will fall to the ground, which is what we see as rain (hail, snow).

The two conditions that must be met for snow or rain are 1Warm and humid air currents from the tropics. 2.There is cold air from the alpine regions.

It's because the water has been evaporated by the sun! When cold air is encountered in the sky, it becomes a cloud, and when it accumulates to the point that the cloud cannot bear it, it becomes rain.

Hello, because rivers, lakes, and seas are irradiated by the sun, the water inside becomes water vapor. The water vapor rises and turns into small droplets, and finally into clouds. The small water droplets and Xiaoice crystals that make up the cloud are supported by the air flow below, but the rising air flow is still transporting water vapor in.

The small water droplets and Xiaoice crystals in the cloud collide with each other in motion, thus increasing in size. Then, as the volume of the ice crystals in the upper layer of the cloud slowly 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 too big for the updrafts to hold them, it rains.