The processes of evaporation and condensation form clouds. First, the process of evaporation takes place in water bodies like seas and oceans. The liquid water converts to water vapour and rises up. As they rise up in the sky, the temperature changes. It is cold there and the water vapour is hot. So, the water vapour condenses to form tiny droplets of water in the sky. The tiny droplets come together to form the clouds that we see.