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Year 8 - Geography

Mass movement

Rocks, weathering and soil: Why is geology important?

Unit Summary

This unit teaches pupils about the physical processes that create and alter different types of rocks and soils over time. Pupils will also develop their understanding of how humans use different rocks and soils and why this can affect geographical patterns of wealth and population.

Lesson Summary

You will learn to understand mass movement and know how gravity causes sediments to move downhill.

Key Notes

  • Mass movement is the downhill movement of sediment under the influence of gravity.
  • The main types of mass movement are rockfall, sliding, and slumping.
  • Slumping is common on coastlines.
  • Weathering and erosion lead to mass movement when combined with wet weather conditions.

Vocabulary To Learn

  • mass movement: the downhill movement of material under the influence of gravity
  • weathering: the process of being worn down due to long exposure to the atmosphere
  • erosion: erosion is the process of Earth's surface, e.g. rock or soil, being worn away and transported from its original site

Common Mistakes To Avoid

  • Students may believe that mass movement only occurs in mountainous areas or during extreme weather events.

3 Quick Questions (With Answers)

1. Explain this geography topic using two clear key points.

Mass movement is the downhill movement of sediment under the influence of gravity. The main types of mass movement are rockfall, sliding, and slumping.

2. Define this geography term and use it in an example. 'mass movement'

the downhill movement of material under the influence of gravity.

3. Correct this common geography misunderstanding.

Mistake: Students may believe that mass movement only occurs in mountainous areas or during extreme weather events. Correction: Mass movement can happen anywhere there are slopes, even in places with mild weather conditions. While extreme weather can trigger events, even light rainfall can cause mass movement if the slope is steep or the material is already weathered.

More Lessons In This Unit

Browse all guides in the Year 8 Geography guide library.