How is rain formed?

Due to the heat of the sun the water from the waterbodies like rivers, oceans etc and plants evaporates and reaches the atmoshphere. The water vapor condenses to the form the clouds and when it is further colled...it comes down as rain. This process continues and it is knaon as water cycle.

Evaporation and Condensation
Evaporation is the process by which liquids change to vapour due to heat. On cooling, vapour changes to liquid and this is called condensation. Water changing into water vapour is an example of evaporation and water vapour changing into water is an example of condensation.