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Guided Notes For Chapter 8 – 1 Changing Earth’s Surface. Wearing Down and Building Up What processes wear down and build up Earth’s surface?. Erosion – The process by which natural forces move weathered rock from one place to another .
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Guided Notes For Chapter 8 – 1 Changing Earth’s Surface Wearing Down and Building Up What processes wear down and build up Earth’s surface?
Erosion – The process by which natural forces move weathered rock from one place to another.
Sediment is the material moved by erosion.Weathering and erosion produce sediment. • .
Deposition – The area where sediment is laid or deposited. Deposition changes the shape of land.
Weathering, Erosion & Deposition act together to wear down and build up Earth’s surface.
Mass Movement – Gravity is the force pulling rocks and other materials downhill. • Four types of Mass Movement: • LANDSLIDES • MUDSLIDES • SLUMP • CREEP
Landslide – (The most destructive) When rock and soil move quickly down a steep slope. • El Salvador, 2001
A Mudflow is the rapid downhill movement of a mixture of water (60%), rock and soil.
Slump refers to the sudden movement of one large mass of rock and soil.
Landslide video Quick Clay Landslide – Iceland 21:17 http://www.youtube.com/watch?v=3q-qfNlEP4A Landslide – Slump 1:53 http://www.youtube.com/watch?v=CvOUygzBmOo Mudslide – Keystone Colorado 4:13 http://www.youtube.comwatch?v=CyY3bCV8K-M