Final answer:
The sun is the energy source that moves water through the water cycle.
Step-by-step explanation:
The energy source that moves water through the water cycle is the sun. Solar energy from the sun drives the process of evaporation, where water molecules gain enough energy to transition from liquid to gas form and rise into the atmosphere. This sets off the water cycle by providing the initial energy needed for water to move through various stages like condensation, precipitation, and surface runoff.
Learn more about Water cycle and energy source