1. Gravity’s Effect on Erosion 2/4/15 12-4 pgs. 316-319 IN: Explain how glaciers cause erosion. Put your blue DRW on the box

2. Alaskan Glacier

4. Wheeler Peak Glacier, NV

5. What happened?

6. How does gravity effect erosion? ► Mass Movement – the movement of any material, such as rock, soil, or snow, downslope.

7. ► Mass movement is controlled by the force of gravity and can occur rapidly or slowly.

8. Angle of Repose ► The angle of repose is the steepest angle, or slope, at which loose material will not slide downslope.

10. Rapid Mass Movement Rock Fall – a group of loose rocks that fall down a steep slope.

11. Boulder the size of an elephant crushes entire house and instantly kills two inhabitants in Utah landslide | Mail Online

12. Rapid Mass Movement Landslide – a sudden and rapid movement of a large amount of material downslope.

13. Rapid Mass Movement Slump – when a block of material moves downslope.

14. Mudflow – the rapid movement of a large mass of mud/rock and soil mixed with a large amount of water that flows downhill.

15. Rapid Mass Movement Lahars – mudflows of volcanic origin.

16. Slow Mass Movement Creep – the extremely slow movement of material downslope.

17. OUT: What factors increase the potential for mass movement?