Q:How Does Rain Form?
A: Water Cycle
Rain is liquid water in the form of droplets that have condensed from atmospheric water vapor and then precipitated—that is, become heavy enough to fall under gravity. Rain is a major component of the water cycle and is responsible for depositing most of the fresh water on the Earth.
How does rain form?
Sun/heat/water vapour/evapouration/condensation/clouds/droplets bump into each other... get big and gravoty makes them fall.
What causes a drought