2.5 Mass Wasting

• Mass wasting and mass movement
• Types of mass wasting on the Earth surface
• Processes of mass wasting on the environment
• Factors influencing mass wasting on the environment
• Effects of mass wasting on the environment
• Disaster preparedness and management related to mass wasting

• explain types of mass wasting on the earth surface
• describe processes of mass wasting on the environment
• examine factors influencing mass wasting on the environment
• analyse the effects of mass wasting on the environment
• design strategies for disaster preparedness and management related to mass wasting
• appreciate disaster preparedness and management of mass wasting in the community

“Why is disaster preparedness and management on mass wasting important?”

“How does mass wasting shape the landscape and affect people?”

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1. Mass wasting and mass movement
   40 min · 1 practice tasks · quiz
   Introduce mass wasting, tell it apart from weathering and erosion, and state the key inquiry question.
2. Types of mass wasting
   40 min · 1 practice tasks · quiz
   Group mass wasting into falls, slides, flows and creep.
3. Slow movements: soil creep and solifluction
   40 min · 1 practice tasks · quiz
   Describe soil creep and solifluction and the evidence they leave.
4. Falls and slides
   40 min · 1 practice tasks · quiz
   Describe rock falls, debris falls, landslides and slumps.
5. Flow movements
   40 min · 1 practice tasks · quiz
   Describe earthflows, mudflows, debris flows and lahars.
6. The processes of mass wasting
   40 min · 1 practice tasks · quiz
   Explain the forces that act on a slope and cause it to fail.
7. Factors influencing mass wasting
   40 min · 1 practice tasks · quiz
   Examine the factors that make a slope more or less stable.
8. What triggers mass wasting
   40 min · 1 practice tasks · quiz
   Explain the sudden events that start mass wasting.
9. Effects of mass wasting on the physical environment
   40 min · 1 practice tasks · quiz
   Analyse how mass wasting changes the land.
10. Effects of mass wasting on human activities
    40 min · 1 practice tasks · quiz
    Analyse how mass wasting affects people, homes and livelihoods.
11. Disaster preparedness and management
    40 min · 1 practice tasks · quiz
    Design strategies to prepare for, survive and recover from mass wasting.
12. Mass wasting in Kenya and community awareness
    40 min · 1 practice tasks · quiz
    Study Kenyan areas affected by mass wasting and create community awareness.
13. Review, portfolio and appreciation
    40 min · 1 practice tasks · quiz
    Review the whole node, build a portfolio and appreciate action that saves lives.