US Geological Survey
U.s. Geological Survey: Water Science for Schools
A collection of resources--pictures, maps, data, glossary--about water and the water cycle.
PBS
Pbs Learning Media: Water Vapor Circulation on Earth
This simulation from the National Center for Atmospheric Research portrays annual patterns in water vapor and precipitation across the globe, illustrating general circulation patterns as well as seasonal and regional variation. [4:52]
TeachEngineering
Teach Engineering: How Full Is Full?
During this activity, students will learn about porosity and permeability and relate these concepts to groundwater flow. Students will use simple materials to conduct a porosity experiment and use the information to understand how...
TeachEngineering
Teach Engineering: What Trickles Down?
Permeability is the degree to which water or other liquids are able to flow through a material. Different substances such as soil, gravel, sand, and asphalt have varying levels of permeability. In this activity, students will explore...