willy the water drop first evaporates from the sun causing the water to turn into water vapor.
The water vapor then rises into the air joining together to make clouds. Next the water vapor starts to cool down and turn into liquid water.
Next, the clouds pour down as precipitation. The water droplets(Willy the water drop) come down as rain
Then, as water precipitates, some of it is absorbed by the soil. The water is processed similar to evaporation where liquid water is turned into water vapor by the plants.
After that, the water runs off over the surface of earth. When the snow melts into water it also leads to runoff. This runoff combines to form channels and then rivers and ends up into lakes, seas and oceans.
Some of the water that precipitates does not runoff into the rivers and is absorbed by the plants or gets evaporated. It moves deep into the soil.The water seeps down and increases the level of ground water table.