:- Water cycle is the cycle of processes through which water circulates in the EARTH atmosphere like in the form of rain and snow then it is transfers through OCEANS etc. The most important ROLE has been played by sunlight and gravity. Water cycle MAINLY involves four processes are as follows :- • The First process is evaporation. Evaporation :- It is process of changing water into water vapour . When due to sunlight oceans , lakes etc became warm then the water goes upwards in the form of water vapour and these water vapour droplets form clouds .• The second process is Condensation .Condensation :- It is the process when water vapour in the air cool down and turns back into liquid water .• The third process is Precipitation .Precipitation :- It is the process of changing water vapour into water. When clouds becomes heavy then they fall in the form Snow , Rain etc. • The fourth process is Collection .Collection :- When water falls in the form of rain , snow etc. collects in the Oceans, Rivers , Lakes etc. and most will soak into the ground and will collected as UNDERGROUND water..