Living with tectonic hazards

Hundreds of millions of people live near active volcanoes or on earthquake zones. Why stay, and how can the risks be reduced?

Practise this lesson free (6 questions)

Why live in danger?

Fertile soil: weathered volcanic ash and lava make rich soil for farming.
Geothermal energy: underground heat can make electricity, as in Iceland and Kenya.
Tourism: volcanoes and hot springs attract visitors and jobs.
Minerals: such as sulphur and copper.
And many people have family, homes and jobs there, or cannot afford to move. Big eruptions and earthquakes are rare, so many people judge the risk worth taking.

Predict, protect, prepare

Predict: scientists monitor volcanoes for small earthquakes, swelling of the ground and changes in gases. Earthquakes cannot yet be predicted exactly, but risky zones are known.
Protect: earthquake-resistant buildings with deep foundations, steel frames, cross-bracing and rubber shock absorbers; strict building rules.
Prepare: emergency plans, warning systems, evacuation routes, and drills. In Japan, many people practise earthquake drills, including on Disaster Prevention Day (1 September).

Case study: Nepal, 2015

On 25 April 2015 a magnitude 7.8 earthquake struck central Nepal (USGS). It happened where the Indian plate pushes into the Eurasian plate: the same collision that builds the Himalayas.
Primary effects (from the shaking): buildings collapsed. About 9,000 people died and more than 21,000 were seriously injured (USGS).
Secondary effects (that followed): landslides blocked roads; an avalanche on Mount Everest killed climbers; many people lost homes and income.
Nepal is a lower-income country with many older buildings, which made the damage worse. Wealth, building quality and preparation strongly affect how deadly a hazard is.
Worked example

Two earthquakes of the same magnitude hit two countries. One has strict building rules and regular drills; the other has many old, unreinforced buildings. Explain which is likely to have fewer deaths.

  1. Strict building rules mean buildings are designed to sway rather than collapse.
  2. Regular drills mean people know to drop, cover and hold on, and how to evacuate.
  3. So the country with strict rules and drills is likely to have far fewer deaths.

Answer: The country with strict building rules and drills, because its buildings are less likely to collapse and people know what to do.

Key idea

People live near tectonic hazards for fertile soil, geothermal energy, tourism, minerals and family ties. Risk is cut by predicting, protecting and preparing. Nepal 2015: magnitude 7.8, about 9,000 deaths (USGS); primary effects come from the shaking, secondary effects follow later. Wealth and preparation shape the impact.

Key words
Earthquake
A sudden shaking of the ground caused by movement of the Earth's plates.
Lava
Magma that has reached the Earth's surface.

All KS3 Geography key terms and definitions β†’

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  1. Why is soil near volcanoes often fertile?

    1. It is always flat
    2. Volcanic ash and lava break down into mineral-rich soil
    3. It is always wet
    4. No plants grow there
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    Answer: Volcanic ash and lava break down into mineral-rich soil

    Volcanic soils are rich in minerals.

  2. Which country gets a lot of its electricity and heating from geothermal energy?

    1. The Netherlands
    2. Egypt
    3. Bangladesh
    4. Iceland
    Show the answer

    Answer: Iceland

    Iceland uses heat from inside the Earth.

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Sources and references

Checked by the GCSE-ready editorial team, 16 October 2026. Last updated 2 October 2026. Spotted a mistake? Tell us and we will fix it.

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