The information on this site indicates that the life cycle of a glacier is more eventful than it appears. The site allows students to follow the journey of a single snowflake as it takes a ride through a glacier, a process that can take as much as 30,000 years to complete. It can be viewed as an interactive slide show or a single page of text and illustrations. Full description.

This resource gives an impression of how immense our Universe is by employing a method used many times in "Power of 10" films - that is, starting with an image of the Earth and then zooming out towards the furthest visible reaches of our Universe. This is not, however, an exercise in "powers of 10" - on the contrary, the goal is to show astronomical distances without scientific notation. It focuses ... Full description.

This site contains a series of six posters all relating to water education: wetlands, water use, waste water, navigation, ground water, and water quality. Each poster includes information about the topic as well as related classroom activities. The objective of the water-resources education program is to stimulate interest in and provide a basic knowledge of water resources for students in grades ... 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.

This CD-ROM is a reproduction of the out-of-print textbook by the same name developed for the undergraduate to graduate level Earth systems science major to study landforms and landscapes. It presents in-depth coverage of geomorphology as a discipline and the use of satellite imagery in observation, study, and interpretation. It contains a gallery of 237 color and black and white plates of space imagery, ... Full description.

This USGS site contains very useful descriptions about many aspects of ground water. The major topics include Ground Water, How Ground Water Occurs, Quality of Ground Water, Appraising the Nation's Ground-Water Resources, and a Glossary. This is a non-technical site, designed for use by the general public. Several charts and diagrams are also included in this site. Full description.

Materials presented here outline basic concepts related to groundwater, answering questions like "What is groundwater?" and "What is an aquifer?" More detailed topics include groundwater quality, sources of contamination, engineering problems presented by groundwater, and safeguards to the groundwater supply. A bibliography and links to other water-related sites are included. A French translation ... Full description.

This NASA site contains a wealth of information about hurricanes, including how they are created, how they move, and the dangers they pose. Also included are sections that deal with naming of hurricanes, hurricane hunters, a VR trip through a hurricane, satellite instrumentation, and a video of hurricane Andrew. Full description.

This set of resources for younger students includes activities and information on thunderstorms, tornadoes, hurricanes, blizzards and clouds: how they form, and how they impact our lives. There are games about clouds, stories about extreme weather events, and a set of activities in which students create simulations of various weather phenomena such as fog, clouds, tornadoes, and others. The 'Recipe ... Full description.

The Plymouth State College (PSC) Meteorology Program has developed this server to provide explanations of and access to detailed pictures of some basic cloud forms. The cloud images are relatively large (640x480) in order to show detailed structure and features. All of these pictures were taken in the local area around Plymouth, New Hampshire and most from the weather observation deck on the roof ... Full description.