The goal of the PALEOMAP Project is to illustrate the plate tectonic development of the ocean basins and continents, as well as the changing distribution of land and sea during the past 1100 million years. In the section on Earth history you can select any time period, read about that period, and see the plate distribution during that period. There is also a section on climate history where you can ... Full description.

This archive of climatic data houses both national and global datasets as part of the National Climatic Data Center's (NCDC) mission to describe the climate of the United States and to maintain records regarding trends and anomalies of weather and climate. Users may search the archive by data type, national or global coverage, and time period; or by resource type, such as satellite, radar, models, ... Full description.

This website, created and maintained by the Natural Resources Conservation Service, contains an interactive map containing climate information for each state. Users can click on states and find information and data for every county in every state. Data includes daily mean temperature, frost free days, growing season, and monthly temperature and precipitation. Users may also download data from this ... Full description.

Watersheds are those land areas that catch rain or snow and drain to specific marshes, streams, rivers, lakes, or to ground water. This site allows users to locate their watershed by city, county, state, or region. Links provide information about stream flow, water use, conservation efforts, demographics, forest riparian habitats, science in your watershed, water discharges, and assessment of watershed ... Full description.

The Natural Resources Conservation Service (NRCS) installs, operates and maintains an extensive, automated system to collect snowpack and related climatic data in the western United States called SNOTEL (for SNOwpack TELemetry). SNOTEL sensors collect hourly data on temperature, precipitation and snow water equivalent. Data can be displayed as tables or graphs for individual stations, drainage basins ... Full description.

From space, we can understand fires in ways that are impossible from the ground. New Earth-observing satellites capture the significant impact of fires on our planet. In this animation of fires around the globe in 2002, each red dot marks a new fire. Dots change color to yellow after a few days and to black when fires burn out. From brush fires in Africa to forest fires in North America, satellites ... Full description.

Visitors can access information on a variety of water issues in Arizona, including the Colorado River, riparian areas, water conservation, water rights, and recreation. The Arizona Water Resources Research Center (WRRC) provides a glossary of water terms, a stream gauge map and a directory of water-related agencies and organizations, especially Arizona Project WET (Water Education for Teachers). Other ... Full description.

This computer-based lesson provides information on ocean currents, circulation and atmospheric influences. Several sections cover "drift" studies, including the famous Nike Tennis Shoe study. Each segment provides relevant information and gives students questions to answer. Incorrect responses result in more information. This unit is part of an on-line course in general oceanography offered at San ... Full description.

This resource covers basic astronomy, Newtonian mechanics, the Sun and related topics (weather, electromagnetic waves, nuclear energy), and space flight. The material stresses space applications, history, and intuitive content, and includes a brief refresher course on algebra and trigonometry. It is also available in Spanish. Full description.

This Web site provides an illustrated, non-mathematical introduction to the magnetism of the Earth, the Sun, the planets and their environments, following a historical thread. It includes Spanish, French, and German translations, guidance to teachers (including a detailed outline for use in planning an Earth sciences class), glossary, timeline, answered questions by users and a more technical historical ... Full description.