Content Outline for Teaching - Potosi School District - Home
Content Outline for Teaching - Potosi School District - Home
Content Outline for Teaching - Potosi School District - Home
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11<br />
<strong>Content</strong> <strong>Outline</strong><br />
<strong>for</strong> <strong>Teaching</strong><br />
Weathering and Erosion (continued)<br />
E. Runoff—water flowing on Earth’s surface causes erosion.<br />
1. Sheet flow—when water flows downhill as a thin sheet often carrying loose<br />
sediment grains<br />
2. Rills and gullies are channels cut into Earth’s surface and are <strong>for</strong>med as runoff<br />
carries sediments along.<br />
3. Streams have water flowing through them continuously; they eventually flow<br />
into the ocean or a large lake.<br />
4. Moving water in streams is the most important agent of erosion, they shape<br />
more of Earth’s surface than ice, wind, or gravity.<br />
Discussion Question<br />
Name and describe four types of mass movement. creep—slow downhill movement;<br />
slump—movement downhill along a curved surface; rock slide—rocks break loose and fall<br />
downhill; mud slides—wet sediment flows downhill<br />
Weathering and Erosion 33
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