Science & TechFact

A fair-weather cloud weighs as much as a hundred elephants.

A typical cumulus cloud holds about half a gram of water per cubic meter. For a cloud one kilometer on each side, a billion cubic meters, that's roughly 500 tonnes of water. It doesn't fall because the water is spread over tiny droplets that rising warm air keeps aloft with ease.

Useful: Rain only starts when droplets merge into drops heavier than the updraft can carry.

Source: usgs.gov

Physik Wetter Zahlen

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