The document summarizes the water cycle in 4 stages: evaporation, where water from bodies of water evaporates into water vapor due to heat from the sun; condensation, where water vapor condenses to form clouds; precipitation, where water falls from clouds as rain, snow, or hail; and collection, where precipitation collects in bodies of water or soaks into the ground as underground water. It then provides more details on each stage of the water cycle and how water is continuously circulated through this process within the Earth's atmosphere and surface.