This site provides the user an opportunity to explore storm clouds and climate change through the use of NASA climate research data obtained through satellite imaging. The user is challenged to investigate actual scientific research data on clouds and storms, and make observations and interpretations available to NASA research scientists for review. Topics addressed by these investigations include ... Full description.

A phase diagram shows the preferred physical states of matter at different temperatures and pressures. This phase diagram shows these states for water. Critical points, triple points, and ice phase processes are defined and illustrated as a function of pressure and temperature. The diagram is accompanied by a set of tables that give detailed thermodynamic data for the triple points and structural/crystallographic ... Full description.

The materials available here were brought together by government agencies, universities, non-profit organizations, and businesses in an effort to make Earth Science information accessible to a broader community. The Federation was established to make this a reality by encouraging and establishing the use of best science practices in the production of high quality data, information, products and services. ... Full description.

This library features teacher-tested, standards-based engineering content for K-12 teachers to use in science and math classrooms. Engineering lessons connect real-world experiences with curricular content already taught in K-12 classrooms. The collection is searchable by keyword, grade level, or educational standard, and can be browsed by subject area, curricular unit, lessons or activities. Full description.

In this lesson plan students observe a teacher-directed demonstration that provides a conceptual understanding of latent heat. A reusable handwarmer that uses a solution of sodium acetate is used to illustrate phase changes and the release of energy and latent heat. Full description.

This site is all about snow crystals and snowflakes. The many facets of snow crystals are described here, along with attempts to understand their formation. This site includes collections of super-high-resolution snow crystal photos, as well as links to learn about snow crystal classifications and how to make snow crystal fossils. Included in the study of how snow crystals form, these researchers ... Full description.

This is a comprehensive site that looks at many components of dams, including construction, destruction, and other issues. Access is organized into three levels by grade level. Information on cracks, case histories of the building and problems associated with some well known dams, and some real and imagined scenarios are included. Full description.

Surf Your Watershed is a service to help you locate, use, and share environmental information about your state and watershed. There are four components to the site. Clickable maps, zipcode look-ups and plance name searches provide access to local watershed information. A searchable database offers information on the Adopt a Watershed campaign, a project that challenges citizens and organizations to ... Full description.

The National Weather Service provides weather and marine data from buoys surrounding North America, the Carribean, and Great Britain. Historical and realtime data are featured. Data include wind, waves, atmospheric pressure, air and water temperature, and dewpoint. Frequently Asked Questions explain how the marine stations collect and transmit data, how quality is assured, and how the National Data ... Full description.