Why do earthquakes of similar strength have very different impacts in richer and poorer countries?
A comparison of the effects of and responses to earthquakes in a more developed and a less developed country (AO1, AO2).
A focused CCEA GCSE Geography case-study guide comparing earthquakes in a richer and a poorer country. Explains why the level of development, not just the magnitude, shapes the effects and responses, using contrasting examples and the framework examiners reward.
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What this dot point is asking
CCEA requires a comparison of earthquakes in places at different levels of development. The big idea is that the magnitude alone does not decide the death toll: a country's wealth and development shape how strong its buildings are, how fast its emergency services respond, and how prepared its people are. You need contrasting examples and a clear framework that explains why the same shaking can kill a handful of people in one country and tens of thousands in another.
Why development shapes the impact
Comparing the two contexts
Set the two contexts side by side; this contrast is the whole point of the case study.
- Buildings. Richer country: strict building codes and engineered, earthquake-resistant structures. Poorer country: cheap, poorly built concrete or mud-brick homes that pancake when shaken.
- Emergency response. Richer country: trained, well-equipped rescue teams and hospitals respond within hours. Poorer country: under-resourced services, slow response, overwhelmed hospitals.
- Preparation. Richer country: regular drills, public awareness and warning systems. Poorer country: little public education or preparation.
- Recovery. Richer country: insurance and government funds rebuild quickly. Poorer country: dependence on foreign aid, with recovery lasting years.
The effects that follow
The contrast in context produces a stark contrast in effects.
- Deaths and injuries are usually far higher in the poorer country, because buildings collapse and rescue is slow.
- Homelessness and disease spread more widely where housing is weak and clean water and sanitation are disrupted.
- Economic losses can be huge in both, but in different ways: a richer country loses more in money because property is more valuable, while a poorer country loses a larger share of its economy and may be set back for years.
Worked example: structuring a comparison
Common mistakes
Examples in context
Example 1. The same magnitude, very different tolls. A magnitude 7 earthquake striking a wealthy country with engineered buildings may kill only a few dozen people, while a magnitude 7 quake in a poor country with weak housing can kill tens of thousands, as in the 2010 Haiti earthquake. The shaking was comparable; the difference was almost entirely the quality of buildings and services, which is exactly the comparison CCEA wants.
Example 2. Recovery measured in months versus years. After a quake, a richer country can draw on insurance and government funds to clear debris and rebuild within months, while a poorer country may still be living in temporary shelter years later, dependent on foreign aid. This long tail of recovery is itself an impact, and contrasting it shows the examiner you understand effects beyond the day of the earthquake.
Try this
Q1. What is the most important factor, apart from magnitude, in deciding an earthquake's death toll? [1 mark]
- Cue. The level of development (wealth) of the area affected.
Q2. Give two reasons more people often die in earthquakes in poorer countries. [2 marks]
- Cue. Weaker buildings that collapse; limited emergency and medical services (also: dense informal housing, slow recovery).
Q3. Why might a richer country record higher economic losses but a poorer country suffer more overall? [2 marks]
- Cue. Richer countries lose more money because property is more valuable, but poorer countries lose a larger share of their economy and more lives.
Exam-style practice questions
Practice questions written in the style of CCEA exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.
CCEA Unit 1 (style)6 marksUsing examples, explain why earthquakes of similar magnitude can have very different effects.Show worked answer →
Six marks for linking the scale of effects to the level of development.
The magnitude is only part of the story; the level of development of the area decides how badly people are affected.
In a richer country, strict building codes mean earthquake-resistant buildings stay standing, emergency services respond quickly, and people are prepared through drills, so deaths are usually low even in a strong quake.
In a poorer country, weak buildings collapse easily, emergency services and medical care are limited, and many people live in densely packed, poorly built housing, so the same magnitude kills far more people.
A named contrast, such as a low death toll in a wealthy country against tens of thousands of deaths in a poorer country of similar magnitude, makes the point.
Markers reward the central idea that development, not just magnitude, controls the effects, supported by contrasting examples.
CCEA Unit 1 (style)9 marksTo what extent does a country's level of development determine how well it copes with an earthquake? Use examples.Show worked answer →
Nine marks, level marked, for a balanced, exemplified judgement.
Development matters a great deal: richer countries can afford earthquake-resistant buildings, well-funded emergency services, drills and rapid recovery, so they suffer fewer deaths and recover faster. Poorer countries have weak buildings, limited services and depend heavily on outside aid, so they suffer more deaths and longer recovery.
But development is not the only factor: the magnitude, the depth and location of the focus, the time of day, population density, and whether a tsunami follows all matter too. A shallow quake under a crowded city at night can be devastating even with some preparation.
A strong answer weighs development against these other factors and reaches a supported judgement, for example that development is the single most important control on the human cost, but the physical features of the quake and chance also play a major part.
Markers reward balance, named contrasting examples, and a clear judgement that follows from the argument.
Related dot points
- The structure of the Earth, the theory of plate tectonics, and the features and processes at the different plate margins (AO1, AO2).
A focused CCEA GCSE Geography guide to plate tectonics. Covers the layered structure of the Earth, the difference between continental and oceanic crust, what drives the plates, and the features and hazards found at constructive, destructive, conservative and collision margins.
- The causes of earthquakes, how they are measured, their effects, and the strategies used to prepare for and respond to them (AO1, AO2).
A focused CCEA GCSE Geography guide to earthquakes. Covers how earthquakes are caused at plate margins, the focus and epicentre, how they are measured, their social, economic and environmental effects, and the prediction, protection and planning used to manage them.
- The causes and types of volcano, their effects, why people live near them, and how the hazard is managed (AO1, AO2).
A focused CCEA GCSE Geography guide to volcanoes. Covers how volcanoes form at plate margins, the difference between shield and composite volcanoes, their social, economic and environmental effects, the reasons people live near them, and how the hazard is monitored and managed.
- The meaning of development and the development gap, and the economic and social indicators used to measure it (AO1, AO3).
A focused CCEA GCSE Geography guide to the development gap and how development is measured. Covers what development means, the gap between richer and poorer countries, the economic and social indicators used, and why a combined index such as the HDI is more reliable than any single measure.
- The physical, historical, economic and political factors that cause uneven development between countries (AO1, AO2).
A focused CCEA GCSE Geography guide to the causes of uneven development. Covers the physical, historical, economic and political reasons some countries are far less developed than others, and how these factors can trap a country in poverty.
Sources & how we know this
- CCEA GCSE Geography specification — CCEA (2017)
- CCEA GCSE Geography (2017) Unit 1 past papers and mark schemes — CCEA (2024)