Earth, Our Environment - Class Notes
Chapter 1, The Changing Planet - 03
The Lithosphere & Plate Tectonics

The Lithosphere is also broken up into pieces, and these pieces of Earth are moving relative to the deep Earth and one another. This movement (on the order of a few cm per year) causes earthquakes and volcanoes and crustal deformation. Most of the activity is near the margins of the "plates".

Three types of plate margins exist:

Plate interactions produce changes in geology, volcanoes, earthquakes, etc. Over long periods of time, these actions create landscape. Landscape is in turn altered by climate and weather.

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Prepared by: Charles J. Ammon
January 1997