The hydrosphere is a region that includes all the earth's liquid water, frozen water, floating ice, frozen upper layer of soil, and the small amounts of water vapour in the atmosphere. When water enters the hydrosphere it moves in a cycle. Rainfall and snowfall are some of the occurrences when water is accumulated in clouds. Water bodies such as oceans, rivers, and lakes absorb this water. Finally it evaporates within the atmosphere to begin the cycle all over again, which is called the water cycle.