1. Erosion and Mass Movements RRB page 161-162

2. Erosion Erosion: The carrying of sediment by wind, water, ice and other agents Erosion: The carrying of sediment by wind, water, ice and other agents Erosion is the process by which sediments are obtained and transported Erosion is the process by which sediments are obtained and transported Erosion is also the wearing away and lowering of Earth’s land and surface features Erosion is also the wearing away and lowering of Earth’s land and surface features DO NOT WRITE: The sun plays an important part in erosion. The sun drives the water cycle, and therefore, precipitation for running water and glaciers. Insolation also ”fuels” wind patterns that create ocean currents and waves DO NOT WRITE: The sun plays an important part in erosion. The sun drives the water cycle, and therefore, precipitation for running water and glaciers. Insolation also ”fuels” wind patterns that create ocean currents and waves

5. Triggers of Mass Movements Mass Movements Mass Movements  Among the factors that commonly trigger mass movements are saturation of surface materials with water, oversteepening of slopes, removal of vegetation, and earthquakes.

6. Types of Mass Movements Mass Movements  Geologists classify mass movements based on the kind of material that moves, how it moves, and the speed of movement.  Rockfalls

8. Types of Mass Movements Mass Movements Speed: 1 mm/ day to 1 km/hr  Debris Flow

11. Heavy Rains Can Trigger Slumps

12. Types of Mass Movements Mass Movements Mudflows  Flows Flows are mass movements of material containing a large amount of water.

14. Types of Mass Movements Mass Movements  Creep *Creep can cause: Cracked roads, leaning utility poles, and bent trees