Usually air resistance causes water droplets to remain hanging in the cloud. When air turbulence occurs, water droplets collide, producing large droplets. ... In clouds where the temperature is below the freezing point of water, when ice crystals gain enough mass, they begin to fall down.
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Usually air resistance causes water droplets to remain hanging in the cloud. When air turbulence occurs, water droplets collide, producing large droplets. ... In clouds where the temperature is below the freezing point of water, when ice crystals gain enough mass, they begin to fall down.