THE PROCESS OF RAIN
Water is a vital natural resource for the survival and development of living things on Earth. The occurrence of rain is strongly influenced by convection in the earth's atmosphere and oceans. Convection is the process of heat transfer by mass motion of a fluid from one region to another. The waters comprising seawater, river water, wastewater, and so forth are generally undergoing evaporation or evaporation due to the aid of solar heat. The water then becomes steam drifting into the air and eventually continues moving toward the high sky with other water vapors.
Upon the above, steam vapors undergo a process of compaction or so-called condensation to form clouds. As a result of the moving wind, the clouds meet each other and enlarge and then toward the atmosphere of the earth is lower or cold temperatures and eventually form ice and water grains. Because it is too heavy and can no longer support the wind eventually the grains of water or ice fall to the surface of the earth, this process is also called the process of precipitation. Because the lower, the temperature will increase the ice / snow will melt, but if the temperature is very low, it will fall still into snow.
You can see his video about the rain