Water from lakes etc evaporates using heat from the Sun. - 1, Warm water vapour rises through the atmosphere. - 2, The warm water vapour begins to cool high up in the atmosphere.  - 3, Cold air cannot hold as much water vapour as warm air, so the water vapour condenses..  - 4, This condensation happens on the surface of microscopic dust or smoke particles in the air.  - 5, As more and more condensation occurs, a cloud forms.  - 6, When the droplets or crystals grow heavy enough, they fall back to Earth as rain, snow, or hail. - 7,

Cloud Formation

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