This site describes the distribution and movement of water around, through, and above the Earth as water vapor, liquid water, and ice, with emphasis on the water cycle (hydrologic cycle). A summary data table provides an estimate of global water distribution in cubic miles and kilometers from all sources (oceans, ice caps, groundwater, lakes, etc.). There is also a link to a water cycle graphic available ... Full description.

This portal provides links to selected United States Geological Survey (USGS) educational resources that may be useful to undergraduate educators. Many of these resources can be used directly in the classroom, as preparation for lessons or demonstrations, or as resources for teacher education and curriculum development. The resources are also searchable by state or region with the use of an interactive ... Full description.

This portal provides links to selected United States Geological Survey (USGS) educational resources that may be useful to educators in primary school grades. Many of these resources can be used directly in the classroom, as preparation for lessons or demonstrations, or as resources for teacher education and curriculum development. Major topic areas include biology, geography, geology, and water resources. ... Full description.

This portal provides links to selected United States Geological Survey (USGS) educational resources that may be useful to educators in secondary school grades. Many of these resources can be used directly in the classroom, as preparation for lessons or demonstrations, or as resources for teacher education and curriculum development. Major topic areas include biology, geography, geology, and water ... Full description.

This short discussion explains the differences between two processes that often work in concert to decompose rocks. Full description.

This is the homepage of the United States Geological Survey's (USGS) Educational Resources section, which features scientific information intended to help educate the public about natural resources, natural hazards, geospatial data, and issues that affect quality of life. Materials include articles about news and events, and special interest items such as links to maps, resources on our changing planet, ... Full description.

This searchable database of reports and thematic maps currently contains more than 69,000 United States Geological Survey (USGS) bibliographic citations, including USGS numbered series begun as early as 1880. The basic search options include author and/or title. Advanced search options include author, text in title, year or range of years, publication series and number, and a variety of options for ... Full description.