I get lots of rain where I live, what exactly causes it?
It is liquid water in the form of droplets. Usually happens when the droplets have condensed!
What does condensed mean?
It means got smaller. After condensed, it becomes heavy enough to fall under gravity.
So it goes up as a gas, then condenses and becomes heavier.  Cool! What makes the water go up in the first place?
Very cool! It is moisture moving along three-dimensional zones of temperature and moisture contrasts.
Whoa. I didn't know rain had to do with different dimensions.
Yeah, it is pretty crazy. Rain is responsible for depositing most of the fresh water of the earth.
Rain
Rain
Rain is liquid water in the form of droplets that have condensed from atmospheric water vapor and then 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. It provides suitable conditions for many types of ecosystems, as well as water for hydroelectric power plants and crop irrigation.
The major cause of rain production is moisture moving along three-dimensional zones of temperature and moisture contrasts known as weather fronts. If enough
descend, coalescence continues, so that drops become heavy enough to overcome air resistance and fall as rain.
Raindrops have sizes ranging from to mean diameter, above which they tend to break up. Smaller drops are called cloud droplets, and their shape is spherical. As a raindrop increases in size, its shape becomes more oblate, with its largest cross-section facing the oncoming airflow. Contrary to the cartoon pictures of raindrops, their shape does not resemble a teardrop. Intensity and duration of rainfall are usually inversely related