US Geological Survey
Usgs: The Water Cycle
Learn about the movement of water from Earth's surface to the atmosphere with this site. Site describes the water cycle in words and with a diagram. Also explored on the page is the distribution of Earth's global water supply.
Ohio State University
Osu: Beyond Weather and the Water Cycle: The Sun: Earth's Primary Energy Source
Extensive article that discusses the first principle of climate science, i.e., that the Sun is the primary energy source for the climate system of the Earth. Presents five concepts for this principle and explains each, providing...
University of Illinois
University of Illinois Urbana Champaign: A Summary of the Hydrologic Cycle
Animation and text explain the water--or hydrologic--cycle, which is the process that water undergoes in nature.
![Epa: The Water Cycle [Pdf] Graphic](https://content.lessonplanet.com/knovation/original/42176-ac4345d9392f3783430ed3628fd17cec.jpg?1661261553 "Epa: The Water Cycle [Pdf] Graphic")
US Environmental Protection Agency
Epa: The Water Cycle [Pdf]
An illustrated diagram of the water cycle that students can use for study.
US Geological Survey
U.s. Geological Survey: The Water Cycle: The Oceans
Through pictures, diagrams, and charts, learn how the ocean serves as a storehouse of water.
US Geological Survey
U.s. Geological Survey: Water Cycle
An in-depth explanation of the Earth's water cycle, including a hyperlinked diagram that provides direct access to information about each phase in the cycle.