The hydrosphere is made up of various forms of water, such as liquid, vapor and ice. It is the combined amounts of water in all of these various forms that creates the hydrosphere. These forms of water can be found both underground and above ground, including in the air.
The hydrosphere includes both salt and fresh water, with the majority of the hydrosphere on Earth being in a salt water form. The process that water goes through as it moves through the Earth is called a water cycle. It begins with the clouds and ends with the evaporation of the water back into the atmosphere. This is how snow, rain, ice, glaciers, rivers, lakes and oceans are formed. The water cycle is a continuous and on-going process, which is how the hydrosphere is created. It shifts and spreads throughout the earth in the different water forms and is then lifted back into the air to begin the process all over again. Water, along with the combination of gases being expelled into the Earth, contributes to the Earth's hydrosphere. Every process of the water cycle plays a role in creating the different forms of the hydrosphere such as rain, ice or snow.