英文：下雨的过程（60词以上）

英文：下雨的过程（60词以上）
英文：下雨的过程（60词以上）

英文：下雨的过程（60词以上）
In waterclouds, cloud droplets are small drops. They are mostly from continue condensation and colliding compounded lattar. Therefore, in waterclouds, cloud droplets will increase to the size of the rain, we first need to cloud is very thick, cloud droplets dense, moisture content many, so that it can continue to condense growth; Secondly, in the waterclouds inside still need to have strong vertical movement, like this can increase many collisions compounded opportunities. While in thinner and more stable waterclouds, cloud droplets not enough condensation and compounded growth opportunities, can cause cloudy, cloudy day, the general assembly does not rain.
In different parts of a cloud, the cloud droplets size within the distribution is different, causing cloud droplets uneven size of the reason for this is that the transfer of moisture in the air around which cloud droplets of evaporation and. That cloud droplets growth factor is congeals and collision and process, in only condensation role, under the situation of cloud droplets size is uniform, but because of the added to make some water vapor cloud droplets increased, plus and and function of the results, the larger cloud droplets continue to grow bigger be rain. Raindrops suffer the effect of gravity and decline, when there are updraft, you will have a upward force is applied in the rain, make its declining speed slowing, and a few small rain may also be brought up. Only when raindrops increases to a certain extent, to fall to the ground, into rain.

The oceans are the main source of rain, but lakes and rivers also contribute to it. The sun's heat evaporates the water. It remains in the air as an invisible vapour until it condenses, first into clo...

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The oceans are the main source of rain, but lakes and rivers also contribute to it. The sun's heat evaporates the water. It remains in the air as an invisible vapour until it condenses, first into clouds and then into raindrops. Condensation happens when the air is cooled.
Air cools either through expansion or by coming into contact with a cool object such as a cold landmass or an ice-covered area. When air passes over a cold object, it loses heat and its moisture condenses as fog, dew, or frost. Air also cools as it rises and expands. The water vapour in the cooling air condenses to form clouds and, sometimes, rain.
Rain is liquid precipitation , as opposed to other kinds of precipitation such as snow , hail and sleet. Rain requires the presence of a thick layer of the atmosphere to have temperatures above the melting point of water near and above the Earth's surface. On Earth, it is the condensation of atmospheric water vapor into drops of water heavy enough to fall, often making it to the surface. Two processes, possibly acting together, can lead to air becoming saturated leading to rainfall: cooling the air or adding water vapour to the air. Virga is precipitation that begins falling to the earth but evaporates before reaching the surface; it is one of the ways air can become saturated. Precipitation forms via collision with other rain drops or ice crystals within a cloud. Rain drops range in size from oblate, pancake-like shapes for larger drops, to small spheres for smaller drops.

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