Earth Science Unit 1 Chapter 5 Lesson 4 Mass Wasting
Start-Up Objectives Explain how mass wasting occurs Discuss several rapid mass wasting events Discuss several slow mass wasting events What happened in this picture? What caused it?
Mass Wasting Quick Read- Lets read Lesson 4 pages 97-99
Terms Erosion- the removal of soil by wind water or ice Landslide- the rapid downhill movement of a large amount of materials Regolith- the loose layer of rock and soil
Terms Slump- A large block of soil and rock that slides downhill along a curved slope, forcing the rock mass to tilt backwards Mudflow- the rapid downhill movement of a large amount of mud Soil creep- extremely slow down hill slide of soil Earthflow- slow movement of soil down a steep slope
Factors Effecting Mass Wasting Steepness of slope Type of rock Amount of moisture in the ground
Mass Wasting at Work Mass Wasting Mass Wasting Mass Wasting
Review Questions Let’s answer them together! Page 99