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.
CK-12 Foundation
Ck 12: Earth Science: Processes of the Water Cycle Study Guide
[Free Registration/Login may be required to access all resource tools.] This study guide summarizes key points about the water cycle. Includes a few questions to check for understanding.
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...
American Geosciences Institute
American Geosciences Institute: Earth Science Week: What's Down There?
Students build a model to learn about the cycle of erosion and deposition by water and wind which deposits layer upon layer of rock, soil, and organic material to the surface.
NASA
Nasa: Oceanography
Join NASA in its study of oceanography and learn about the Earth system, the physical ocean, and life in the ocean. Try out the Giovanni: Earth Data Visualization Tool and access satellite-derived data to enhance the learning experience.