What causes the phase change of water shown in the illistation above?

the water cycle-it changes forms for various reasons, when the sun heats water, it turns to water vapor which is a gas, and rises to the sky where it cools down into liquid particles, light enough to stay floated in the air, until its released as rain to the ground. with snow it can either be melted and then evaporated, or the sun can cause snow to evaporate snow without even turning to liquid. and transpiration is when the water on trees and other plants is evaporated. (but all of these start with the SUN. so you can say the cause of phase changes always starts with the sun)