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Unit 3: Surface Processes on Earth
 
Chapter 7: Weathering, Erosion, and Soil
 
page 152 Weathering, Erosion, and Soil

Soil and Sediment Erosion
Visit this site by the U.S. Global Change Research Information Office for an introduction to erosion of soil, sediments, and rocks. In what regions of Earth does soil erosion by the action of wind and water have the greatest impact?

Soil Science Education Home Page
Go to this site to really get into soil science. Here you can discover how soil affects the environment and society, and also how you can use soil for home projects, like a garden. Visit this site and perform the demonstration on how much soil there is in the world. Was it as much as you thought?

Wind Erosion
Go to this site by the U.S. Global Change Research Information Office to learn more about erosion by wind. Is wind erosion affected by human activity?

Glacial Erosion – Processes
Visit this University of Cincinnati site for photographs of different types of glacial erosion. Click on striated graywackies, Yale Glacier, AK 1997 to see glacial striations on bedrock. What caused the scattered pits on the bedrock?

Frost Wedging
At this Rocky Mountain National Park site you can learn about weathering of rocks through frost wedging. What is one sign that frost wedging is at work on rocks?

page 157 Weathering

Environmental Issues
Visit this web site for various links about current environmental issues. Click on the acid rain links to learn how chemical weathering can occur and damage the environment. Write about it in your Science Journal.

Bryce Canyon National Park
Go to this site to find out how wind and water erosion helped shaped Bryce Canyon National Park. Scroll down to park geology to find out what fins and hoodoos are. How are hoodoos related to fins?

Geologic Setting of Stone Mountain, Georgia
Visit this USGS site about Stone Mountain Park in Georgia to learn more about exfoliation in rocks. Scroll down and click on Stone Mountain to see a digital line graph of the surrounding area, or click on Stone Mountain, Georgia Virtual Field Trip to see images of dikes, xenoliths, and exfoliation on the granite dome of this mountain. The granite dome of Stone Mountain has formed because the granite is more resistant to erosion than the rocks in the surrounding countryside. What characteristic of the granite makes it more resistant to erosion?

page 176 Protecting Coastal Structures

Cape Hatteras National Seashore
You can visit this site to find out about barrier islands, Cape Hatteras, and the lighthouse. Why was a lighthouse built on this coast? Why was it necessary to move the lighthouse?

Coastal Erosion: Severity of the Problem
Visit this site to find out what happens when permanent structures are built on barrier islands.

The Atlantic Coastline: The Nature of the Barrier Islands
At this site you can find out more about barrier islands in general, and about how the barrier islands of North Carolina’s Outer Banks formed in particular. How have these islands changed over time?

 


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