Chapter 10: Erosion and Deposition I. Erosion – the process by which weathered rock and soil particles are moved from one place to another A. gravity – pulls rocks and soil down slopes (ex: landslides, mudflows) B. wind – moves loose sediments or causes abrasion 1. affects deserts, plowed fields, and beaches the most 2. can create sand dunes C. running water – causes the most erosion on Earth (ex: rivers, streams, rainwater runoff) D. glaciers – erode by abrasion or by carrying sediments with them as they move E. waves – constantly erode and shape the shoreline 1. can create sea cliffs, caves, beaches, and sand bars. II. Deposition – the process by which sediments are “deposited” in new locations A. builds new landforms Gravity: pulls rocks and soil down slopes Wind: the most active agent of erosion in deserts, plowed fields and beaches Factors of erosion: 1. 2. 3. 4. Be able to explain the following terms and concepts: 6-2: Gravity: pulls rocks and soil down slopes Mass wasting:_________________________________ _____________________________________ A.Landslides:__________________________ _____________________________________ B.Mudslides:___________________________ _______________________________________ C.Mudflows;___________________________ _____________________________________ D.Slump:______________________________ _______________________________________ E.Earthflows;__________________________ _______________________________________ F.Soilcreep:___________________________ ______________________________________ What particular seaside community has a big problem with landslide?-hint: somewhere in California Be able to explain the following terms and concepts. 6-3: Wind: the most active agent of erosion in deserts, plowed fields and beaches A.Deflation:_______________________________ _________________ B.Abrasion:________________________________ _________________ Factors of erosion: 1. 2. 3. 4. Oasis:____________________________________ Dunes:______________________________________ How are they built up and changed?____________________________________ ____________________________________________ ____________________________________________ Be able to discuss the following information 6-4: Running water: is the major cause of erosion Types of running water: 1. 2. 3. Delta: end of Mississippi River-very large!!! Factors of water runoff: 1. 2. 3. River systems: network of different types of water channels Drainage system: 1. 2. 3. 4. Tributaries:___________________________________ ____________________________________________ ____________________________________________ Any current river flooding occurring in the United States? Be able to discuss the following terms: 6-5: Glaciers: a large mass of moving ice and snow How and where do they form?_______________________________________ ____________________________________________ ____________________________________________ ____________________________________________ How are glaciers powerful erosion agents? Types of glaciers: 1. 2. What happens at the ‘lower’ end of a glacier? What is currently happening to glaciers world-wide? Why? Be able to present and discuss the following: 6-6: Waves: the powerful force of waves constantly erodes and shapes the shoreline. Ways waves erode: 1. 2. 3. Rates of erosion: Forms created by wave action: (find pictures in books) Deposits by waves: 1. Beaches: 2. Sand bars and spits: How is a shoreline shaped?-Discuss storm problems.