In Exploring Wetlands, principles of remote sensing and examples of environmental applications using remote sensing present the background required for using the hands-on CD. Exploring Remote Sensing provides digital remote-sensing data of several small study areas from various environments such as wetlands and volcanoes. Full description.

DataSlate is a multi-curricular, image visualization tool for students. It allows students to easily and quickly maneuver through huge image data sets, overlay and compare images gathered over time, or with different instruments, and observe historical, geographical, geological, and environmental change or to compare images of the same area at different wavelengths. DataSlate includes a CD-ROM (with ... Full description.

In this web-based, interactive story, Tutangiaq (Too-tang-geye-ack - nicknamed 2T), a Canada Goose, flies across Alaska looking for his family. As he flies, he tells children about the fascinating 49th state. Children learn how Alaska was purchased from the Russians, and other facts about the state. They can also compare the size of Alaska to other states. 2T takes a flight across the volcanic chain ... Full description.

In -The Case of the Disappearing Dirt-, summer fun suffers a setback when the tree house detectives discover that their favorite spot on the beach is shrinking.- The detectives dig in and learn more about weathering, erosion, the rock cycle, and much more. This show is part of the NASA SCI Files series of instructional programs consisting of broadcast, print, and online elements.- Emphasizing research ... Full description.

This book of 19 essays, written by leading Earth scientists, provides insight into the dynamic processes that shape the Earth. The essays are edited to reach educators, high school students, and the general public and are supported by case studies describing a range of current research projects (including Looking for Life in Antarctica-and Mars, Mapping Mt. Rainer, and Mapping Hot Springs on the Deep ... Full description.

In this activity, students use walking and running speeds to simulate the difference in S- and P-wave travel times, a property used in the location of earthquakes. They will construct travel time curves using their measurements of walking and running arrival times and calculate the epicenter of a hypothetical earthquake by using triangulation. Full description.

In this activity, learners will look at some of the characteristic properties of aftershock sequences, and relate them to variables in two equations: the modified version of Omori's Law, and the Gutenberg-Richter relation for aftershock sequences. The database provided in this link can be searched to extract the magnitude and time-after-mainshock for selected earthquakes. From this information, users ... Full description.

This reference provides an introduction to the geoid, the equipotential surface of the Earth's gravity field which best fits global mean sea level. There is a narrative of early attempts to describe the geoid, and schematic diagrams showing the geoid and its relationship to Earth's crust, local mean sea level, orthometric heights, and local dynamic ocean topography. Full description.

In this activity, students learn about the different types of seismic waves in an environment they can control. Using an interactive, online wave generator, they will study P waves, S waves, Love waves, and Rayleigh waves, and examine a combination of P and S waves that crudely simulates the wave motion experienced during an earthquake. A tutorial is provided to show how the wave generator is used. ... Full description.

These animations show students the nature of particle motion in longitudinal and transverse waves, and how they combine to form the more complex motions seen in water waves and Rayleigh surface waves, a type seen in earthquakes. The animations are accompanied by written explanations. Full description.