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← 2.4 Earthquakes

Seismic waves: P, S and surface waves

Geography · Grade 10 · about 40 minutes

How P, S and surface waves travel, why surface waves do most damage, and how the P-S gap gives distance from the epicentre.

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  • 7 sections of explanation, worked examples and diagrams
  • 1 practice task with hints and worked answers
  • A quiz that marks itself as you go
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Other lessons in this sub-strand

  1. What causes an earthquake, and how it is measured
  2. Effects of earthquakes and how to prepare
  3. How faults store and release earthquake energy
  4. Seismic waves: P, S and surface waves
  5. Locating an epicentre and reading the scales
  6. Why earthquake belts follow plate boundaries
  7. Earthquakes of the East African Rift in Kenya
  8. How earthquakes reshape land, slopes and water
  9. Why Kenyan towns are becoming more vulnerable
  10. Preparing Kenya for the next Rift earthquake