Clouds - Clouds + Air Circulation Clouds form when the...

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Clouds + Air Circulation Clouds form when the temperature is cool enough for certain molecules in a planet's atmosphere to form droplets ( condense ). Clouds are usually made from minor ingredients in a planet's atmosphere (for example, Earth's clouds are made of water droplets that makes up less than 1% of our air globally while the majority of Earth's atmosphere is nitrogen and oxygen). Clouds are important because (1) they block input energy from the Sun (a cooling effect); and (2) they trap energy from the surface (a heating effect). It is difficult to figure out which effect has greater long-term significance in how the temperature will change over time periods of years. Clouds are also extremely hard to model because they are so variable and changeable. The formation of clouds is also part of an energy transfer process because of an energy called latent heat. When a liquid turns into a gas such as liquid water evaporating, it absorbs energy while the temperature remains constant. The absorbed energy is the latent heat. (This is why we sweat---as
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Clouds - Clouds + Air Circulation Clouds form when the...

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