The heat of the sun provides energy to make the water cycle work. #1 I The sun evaporates water from the lakes, rivers, oceans into water vapor which rises up.

#2 : The heat of the sun also causes water to evaporate from plants.

#3 : The water vapor condenses into clouds as it cools in the atmosphere.

#4 : Water drops form in clouds, which then falls to Earth as precipitation like rain and snow.

#5 : Rainfall & Snow become runoff which flows into lakes, rivers, & oceans.​