Resources

In Part 1, Where is Water Stored on Earth?, students study the availability of water on Earth by viewing a demonstration that models the relative distribution of water in various reservoirs of fresh and saltwater in the context of interactions of Earth systems (hydrosphere, geosphere, biosphere). They gain an understanding about the relative rarity of fresh water available as sources of drinking water for people and habitat in aquatic ecosystems. Students develop a graphical expression to depict the relative amounts of fresh water in each reservoir using the same relative percentages at a different scale.

In Part 2, Water Expeditions, students review the water cycle in the context of by modeling and >describing the movement of water drops as they move between the interacting Earth systems of hydrosphere, atmosphere, geosphere, and biosphere.