Teacher resources and professional development across the curriculum

Teacher professional development and classroom resources across the curriculum

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Mountain Building: A Tug-of-War

Run Time: 00:02:42

Dr. Sherilyn Williams-Stroud, senior research scientist at Chevron-Texaco Energy Technology Company, explains how the mountains we observe today are pushed up by tectonic forces from below, and eroded by forces from above, often by flowing water. Rocks can also physically break down due to collisions with other rocks. Over millions of years, both plate tectonic motion and physical and chemical weathering shape and reshape our modern landscape. Teacher Joe Reilly explains that water that flows over rocks smoothes and breaks them down into smaller pieces of sediment and then transports them to new locations. Featured Scientist: Sherilyn Williams Stroud, Ph.D.


NSES Standard

Grades 5-8 Standard D. Landforms are the result of a combination of constructive (sedimentation, volcanoes) and destructive forces (weathering and erosion).

Grades 5-8 Standard D. Crustal plates constantly move in response to the movements of the mantle.


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