Why is "Listing only negative volcanic impacts" a common mistake in Impacts of Earthquakes and Volcanic Eruptions?

Why it happens: Disasters dominate news. How to avoid it: Mark scheme rewards POSITIVE impacts too — fertile soils, geothermal, tourism. Balanced answer scores highest. Source: 0460 Examiner Reports 2022-2024

Tectonic HazardsCambridge IGCSE Geography (0460)

Impacts of Earthquakes and Volcanic Eruptions

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Impacts of Earthquakes and Volcanic Eruptions Study Notes — Cambridge IGCSE Geography 0460 (2024-2026 syllabus)

Primary and secondary impacts. Social, economic, environmental dimensions. Why developing countries suffer more. Positive volcanic impacts too.

What you’ll learn

Mapped to the Cambridge IGCSE 0460 syllabus (2024-2026).

3.10.1 — Distinguish primary and secondary impacts.
3.10.2 — Explain why developing countries suffer more.
3.10.3 — Identify positive and negative volcanic impacts.

Primary vs secondary impacts

Direct vs knock-on effects.

Primary impacts. Direct effects from the event. Immediate.

Building collapse → casualties.
Ground rupture, landslides.
Lava flows, ash, pyroclastic flows.

Secondary impacts. Knock-on effects in hours/days/weeks.

Tsunamis (if undersea earthquake).
Fires from broken gas lines.
Disease from contaminated water.
Homelessness, displacement.
Economic collapse.

Cambridge tip. Memorise the distinction. Most exam questions ask for SPECIFIC examples of each.

Primary: shaking damage, lava flows.
Secondary: tsunamis, fires, disease, displacement.
Both matter; secondary often kills more long-term.

See the full worked example for impacts of earthquakes and volcanic eruptions →

Why developing countries suffer more

Building codes, response capacity, recovery.

Same magnitude, different outcomes. Japan 2011 (M9.0) had ~20,000 deaths. Haiti 2010 (M7.0) had ~230,000 deaths — despite being a much weaker quake.

Why.

Building codes. Developed: strict, enforced. Developing: weak, especially for low-cost housing.
Warning systems. Developed: extensive monitoring, early warnings. Developing: less infrastructure.
Emergency response. Developed: rapid, well-funded, military assets. Developing: slow, depends on international aid.
Long-term recovery. Developed: insurance, government funds. Developing: years of slow rebuilding via aid.

Cambridge tip. Mark scheme rewards comparison of specific countries with figures.

Building codes + warnings + response + recovery.
All weaker in developing countries.
Same magnitude can mean 10x-100x more deaths.

See the full worked example for impacts of earthquakes and volcanic eruptions →

Volcanic impacts — both sides

Negatives dominate but positives are real.

Negative.

Deaths from pyroclastic flows, ash, lahars.
Property destruction (lava, ash collapsing roofs).
Air travel disruption (Eyjafjallajökull 2010 grounded European flights for days).

Positive.

Fertile soils. Volcanic ash creates exceptionally productive soils over time. Vesuvius, Mt Etna — major agricultural regions.
Geothermal energy. Iceland generates ~30% of electricity from geothermal heat.
Tourism. Volcanoes attract visitors (Pompeii, Yellowstone, Iceland).
Mineral deposits. Volcanic activity creates economic minerals.

Cambridge tip. Mark scheme rewards balanced answer.

Negatives: deaths, destruction, aviation.
Positives: soil, geothermal, tourism, minerals.
Balanced view earns top marks.

See the full worked example for impacts of earthquakes and volcanic eruptions →

How it’s examined

Tectonic impacts appear on every Paper 1. Most-tested: primary vs secondary (8 marks), developing vs developed (8 marks), volcanic positives (6 marks).

Sources: Cambridge IGCSE Geography 0460 syllabus (2024-2026); 0460 Examiner Reports 2022-2024; 0460/22 Oct/Nov 2024 question paper and mark scheme. Last reviewed 2026-05-09.

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Step-by-step worked examples — Impacts of Earthquakes and Volcanic Eruptions

Step-by-step solutions to past-paper-style questions on impacts of earthquakes and volcanic eruptions, written exactly the way a tutor would explain them at the board.

1Earthquake impacts — primary vs secondary (8 marks)
Extended• Adapted from 0460/22 Oct/Nov 2024• impacts
Question
Distinguish PRIMARY from SECONDARY earthquake impacts. State TWO examples of each. (8 marks)
Step-by-step solution
1. Step 1
  Primary impacts (2 marks). Direct effects from the shaking. Occur immediately during the earthquake.
2. Step 2
  Primary examples (2 marks). Building collapse → casualties. Ground rupture, landslides.
3. Step 3
  Secondary impacts (2 marks). Knock-on effects in the hours, days, weeks after.
4. Step 4
  Secondary examples (2 marks). Tsunamis (if undersea earthquake), fires from broken gas lines, disease from contaminated water, homelessness, economic collapse, displacement.
Answer
Primary: shaking damage (buildings, deaths). Secondary: tsunami, fires, disease, displacement.
2Why impacts differ between countries (8 marks)
Extended• development
Question
Explain why an earthquake of the same magnitude causes much more death and damage in a developing country than in a developed country. (8 marks)
Step-by-step solution
1. Step 1
  Building codes (2 marks). Developed countries have STRICT building codes requiring earthquake-resistant design. Developing countries often have weaker enforcement; older buildings (especially mud-brick) collapse easily.
2. Step 2
  Warning systems and preparedness (2 marks). Developed: extensive monitoring, early warning systems (Japan), regular drills. Developing: less monitoring; less preparedness.
3. Step 3
  Emergency response (2 marks). Developed: well-equipped emergency services, rapid medical care, hospital capacity. Developing: limited resources, slower response, fewer hospitals.
4. Step 4
  Long-term recovery (2 marks). Developed countries have insurance, government funds, rebuilding capacity. Developing countries depend on slow international aid; recovery takes years.
Answer
Building codes, warning systems, emergency response, recovery — all weaker in developing countries. Same magnitude can mean 10x or 100x more deaths.
Examiner tip
Top-band candidates compare SPECIFIC examples — Haiti 2010 (~230,000 dead) vs Japan 2011 (~20,000 from earthquake/tsunami despite stronger quake).
3Volcanic eruption impacts (6 marks)
Extended• volcano
Question
Identify SIX impacts (both positive and negative) of volcanic eruptions. (6 marks)
Step-by-step solution
1. Step 1
  Negative — deaths (1 mark). Pyroclastic flows, ash inhalation, lahars (mud flows), gases.
2. Step 2
  Negative — property destruction (1 mark). Lava destroys buildings; ash collapses roofs.
3. Step 3
  Negative — air travel disruption (1 mark). Volcanic ash damages jet engines. Eyjafjallajökull (Iceland, 2010) grounded most European flights for a week.
4. Step 4
  Positive — fertile soils (1 mark). Volcanic ash creates exceptionally fertile soils over time. Around Vesuvius, Mt Etna — productive agricultural regions.
5. Step 5
  Positive — geothermal energy (1 mark). Volcanic heat drives geothermal power (Iceland generates ~30% of electricity from geothermal).
6. Step 6
  Positive — tourism (1 mark). Volcanoes attract tourists (Mt Vesuvius/Pompeii, Yellowstone, Iceland). Revenue supports local economies.
Answer
Negative: deaths, destruction, aviation. Positive: fertile soils, geothermal energy, tourism. Top-band evaluation acknowledges both.

Key Definitions and Keywords — Impacts of Earthquakes and Volcanic Eruptions

Definitions to memorise and the exact keywords mark schemes credit for impacts of earthquakes and volcanic eruptions answers — sharpened from recent examiner reports for the 2026 0460 sitting.

Primary impact
Examiner keyword
Direct effects of an earthquake or eruption — occur immediately. Shaking damage, lava flows, etc.
Secondary impact
Examiner keyword
Knock-on effects in hours/days/weeks after the event. Tsunamis, fires, disease, displacement.
Pyroclastic flow
Examiner keyword
Fast-moving cloud of hot gas and ash (>700°C, 100+ km/h) flowing down a volcano. Most deadly volcanic hazard.
Lahar
Examiner keyword
Mudflow of volcanic ash mixed with rain or melted snow. Engulfs valleys downhill.
Richter Scale
Logarithmic scale measuring earthquake magnitude. Each unit = 10x amplitude = ~32x energy.

Common Mistakes and Misconceptions — Impacts of Earthquakes and Volcanic Eruptions

The traps other students keep falling into on impacts of earthquakes and volcanic eruptions questions — taken from recent Cambridge IGCSE 0460 examiner reports and mark schemes — and how to avoid them.

✕Listing only negative volcanic impacts
0460 Examiner Reports 2022-2024
Why it happens
Disasters dominate news.
How to avoid it
Mark scheme rewards POSITIVE impacts too — fertile soils, geothermal, tourism. Balanced answer scores highest.

Practice questions

Exam-style questions with step-by-step worked solutions. Try one before checking the method.

Past paper style quiz

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Impacts of Earthquakes and Volcanic Eruptions

Short Study Notes in the form of Slides

Detailed Study Notes

What you’ll learn

How it’s examined

1Earthquake impacts — primary vs secondary (8 marks)

2Why impacts differ between countries (8 marks)

3Volcanic eruption impacts (6 marks)

Primary impact

Secondary impact

Pyroclastic flow

Lahar

Richter Scale

✕Listing only negative volcanic impacts

Practice questions

Past paper style quiz

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