Geography - Volcanic Eruptions: Causes and Effects

A table to help you understand the causes and effects of volcanic eruptions.

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Geography - Volcanic Eruptions: Causes and Effects

Causes

  • Pressure builds up inside the volcano
  • Plate movement can cause this pressure to be released
  • This means magma (now lava) erupts from the volcano
  • Earthquakes can also cause volcanic eruptions through the plate movement

Effects

  • Buildings destroyed by fires
  • Explosions
  • Roofs collapsing under weight of ash
  • Crops destroyed
  • Livestock killed
  • Mudflows
  • Landscape change
  • Climate change
  • Food/water supply shortages and disruption
  • Homelessness
  • Businesses ruined
  • Cost of insurance claims
  • High levels of unemployment

Overall summary

The effects of a volcanic eruption are devastating, as they can ruin many aspects of people's lives; farmers lose their land, livestock and crops; people lose their homes; business are destroyed; etc.

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