This site, from the U.S. Geological Survey, provides an introduction to the motions of tectonic plates. Descriptions of each of the four types of plate boundaries are presented along with illustrations of the motions...
How Shallow Earth Structure Is Determined: A Classroom Exercise Demonstrating Seismic Refraction Use in the Real World
This lesson introduces students to a real-world application in which seismic waves are used to reveal the shallow structure of the Earth. Students will explore the concepts of reflected and refracted seismic waves and...
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