1 / 17

Erosion and Mass Movements

Learn about erosion causes and mass movements, including factors triggering them and types like rockfalls, debris flow, slumps, and more. Videos available for visual understanding.

margaretlawrence
Download Presentation

Erosion and Mass Movements

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Erosion and Mass Movements Notes in Notebook or on Looseleaf

  2. Erosion • Erosion causes the wearing away and lowering of Earth’s land and surface features as it transports material away • The sun fuels the water cycle and the forces of erosion

  3. Triggers of Mass Movements Mass Movements Mass Movement: The transfer of rock and soil downslope due to gravity Factors that trigger mass movements: • Water-saturated Surface • Over-steepening of Slopes • Lack of Vegetation • Earthquakes .

  4. Types of Mass Movements Mass Movements Classified on the kind of material, how it moves, and the speed of movement. Rockfalls/Debris Fall: When rocks or rock fragments fall freely through the air.

  5. Types of Mass Movements Mass Movements • Debris Flow: In a debris flow, a block of material moves suddenly along a flat, inclined surface • Speed: 1 mm/ day to 1 km/hr

  6. Heavy Rains Can Trigger Slumps

  7. Types of Mass Movements Mass Movements • Flows include: • Avalanches • Mudflows • Landslides •Mudflows

  8. Types of Mass Movements Mass Movements • Creep: the slow, downhill movement of soil • Soil Creep moves more material per year than any other mass movement- even though it is slow, it is constantly happening *Creep can cause: Cracked roads, leaning utility poles, and bent trees

  9. Videos • Watch both videos-Jot down 3 notes total • Landslides: https://www.youtube.com/watch?v=mknStAMia0Q • Avalanches: • https://www.youtube.com/watch?v=wcr1Sl-T9S0

More Related