The Transportation of Weathered Materials


Broken fragments of weathered rock are called sediments. These sediments are often carried or transported from their place of origin to another location. Erosion is the transportation of sediments most often done by water, wind and glaciers.

The force of gravity drives most forms of erosion. For example, a weathered rock on a cliff is pulled by gravity, causing it to fall to the bottom of the cliff. Continued erosion, aided by wind and water, moves the sediment downslope away from the cliff.

This week we will focus on the agents of erosion and in particular, the characteristics of a stream or river that affect its ability to erode sediment.

Homework # 3: Due Wednesday, February 25, 2009

Textbook: read pages 280-284.
Review book: read pages 85-88; do questions 24-37.

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