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Mar 28, 2023 · As a result, cloud droplets are constantly forming and dissipating. When more water condenses on nuclei than evaporates from them, clouds form and grow. Conversely, if there is more evaporation than condensation, clouds dissipate. This is why clouds appear and disappear as well as constantly change shape. Learning Lesson: Smoking Clouds.
Sep 25, 2024 · The Short Answer: Clouds are created when water vapor, an invisible gas, turns into liquid water droplets. These water droplets form on tiny particles, like dust, that are floating in the air. A camera on NASA’s Terra satellite captured this image of clouds over the Southern Indian Ocean. Image credit: NASA/JPL-Caltech.
- What Is A Cloud?
- How Do Clouds form?
- What Causes The Air to Rise?
Many people believe that clouds are just made of water vapour (a gas). However, this is not strictly true. Water vapour is invisible, and it is around us all the time in the air. Sometimes there is more water vapour in the air and it feels humid or muggy. Other times, the air has less water vapour and it feels drier and fresher. Clouds appear when ...
As a simple explanation, when air rises, it cools, much like when you are going up a mountain and the air tends to get colder. Cold air can’t hold as much water vapour than warm air can, so as the air cools, it becomes saturated and the water vapour in it condenses. This means it turns from a gas to a liquid, much like when you get condensation on ...
1. The sun– The sun heats the ground, which then heats the air just above it, causing it to rise upwards in the sky (warm air rises). This tends to produce cumulus clouds. 2. Hills and mountains- When air is travelling towards a mountain or hill, it cannot go into the hill and so it rises upwards along the terrain. Stratus clouds are often produced...
Other important processes that form precipitation are riming, when a supercooled liquid drop collides with a solid snowflake, and aggregation, when two solid snowflakes collide and combine. The precise mechanics of how a cloud forms and grows is not completely understood, but scientists have developed theories explaining the structure of clouds by studying the microphysics of individual droplets.
When air cools, some of the water vapor condenses. As air pressure drops, some water vapor condenses too. The vapor becomes small water droplets and a cloud is formed. Water Vapor Condenses to Form a Cloud. It’s easier for water vapor to condense into water droplets when it has a particle to condense upon. These particles, such as dust and ...
Clouds form when rising air, through expansion, cools to the point where some of the water vapor molecules collide more than they are broken apart by their thermal energy. Some of that invisible water vapor condenses on very small solid particles in the air to form visible cloud droplets. If they rise above the freezing level, they become ice crystals.
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Feb 4, 2019 · Step 1: Change Water Vapor into Liquid Water. Although we can't see it, the first ingredient -- water -- is always present in the atmosphere as water vapor (a gas). But in order to grow a cloud, we need to get the water vapor from a gas to its liquid form. Clouds begin to form when a parcel of air rises from the surface up into the atmosphere.
