IGCSE Geography Exam Cram Pack (Themes 1-3)
✅Study Checklist
Tick each topic as you revise it:
THEME 1: Population and Settlement


THEME 2: The Natural Environment


THEME 3: Economic Development


THEME 1: Population and Settlement
1.1 Population Dynamics

Birth rate: Number of live births per 1000 people per year →shows
fertility


Death rate: Number of deaths per 1000 people per year →shows
mortality


Natural increase/decrease: Births - deaths →shows population
growth/shrinkage


Fertility rate: Avg. number of children per woman →indicates
reproduction rate


Infant mortality rate: Deaths of infants per 1000 live births →
health care quality


Life expectancy: Avg. years a baby is expected to live →living
conditions


DTM (Demographic Transition Model): Explains population change
over time

o
Stage 1: High BR/DR →no growth (e.g. tribal)
o
o
Stage 2: DR drops →population grows (e.g. LICs)
o
o
Stage 3: BR drops →growth slows
o
o
Stage 4: Low BR/DR →stable (e.g. UK)
o
o
Stage 5: BR below DR →shrinking (e.g. Germany)
o
1.2 Migration

Migration: Long-term movement of people →affects population size


Push factors: Negative reasons to leave (e.g. war, drought)


Pull factors: Positive reasons to move in (e.g. jobs, safety)


Voluntary migration: By choice (e.g. better income)


Forced migration: No choice (e.g. natural disaster, war)

1.3 Population Structure

Population pyramid: Shows age/gender of population →used to
analyse dependency


Youthful population: Many young dependents →pressure on
education/services


Ageing population: Many elderly →pressure on pensions/healthcare


Dependency ratio: % dependents vs workers →high = more economic
burden

1.4 Population Density and Distribution

Population density: People per km² →shows how crowded an area is


Sparse areas: Harsh living conditions (e.g. Sahara, Himalayas)


Dense areas: Good resources & climate (e.g. Nile Valley)


Influencing factors: Relief, water, jobs, soil →determine where
people live

1.5 Settlements and Service Provision

Settlement hierarchy: Ranking of settlements by size/services


Function: Main role of a settlement (e.g. port, tourist town)


High-order goods: Expensive/infrequent (e.g. TVs)


Low-order goods: Cheap/frequent (e.g. milk)


Threshold population: Minimum people needed to support a service

1.6 Urban Settlements

CBD: Central business district →shops, offices, high land cost


Bid rent theory: Land value drops further from CBD


Land use zones:

o
Inner city: Old industry, terraced housing
o
o
Suburbs: Housing, green space
o
o
Rural-urban fringe: New developments on city edge
o
1.7 Urbanisation

Urbanisation: % of people living in towns/cities →growing globally


Causes: Rural-urban migration + natural increase


Consequences: Overcrowding, slums, traffic, pollution

THEME 2: The Natural Environment
2.1 Earthquakes and Volcanoes

Convection currents: Heat movement in mantle →causes tectonic
movement


Destructive margin: Oceanic plate subducts under continental →
volcanoes/earthquakes


Constructive margin: Plates pull apart →magma rises, new crust


Conservative margin: Plates slide past →friction causes earthquakes


Earthquake terms:

o
Focus: Where quake starts underground
o
o
Epicentre: Point above focus on surface
o
o
Richter scale: Measures strength of quake
o

Volcano types:

o
Composite: Steep, explosive
o
o
Shield: Gentle, less violent
o
2.2 Rivers

Erosion processes: Break down land (hydraulic, abrasion, attrition,
solution)


Transportation: Movement of load (traction →rolling, suspension →
carried)


Deposition: Drop load when river loses energy


Landforms:

o
Upper: Waterfalls, steep gradients
o
o
Middle: Meanders, lateral erosion
o
o
Lower: Deltas, floodplains →deposition dominates
o

Flood management:

o
Hard engineering:
o

Dams: Control water flow, generate hydroelectric
power


Embankments (levees): Raised banks to prevent
overflow


Flood walls: Solid barriers along rivers to protect
settlements

o
Soft engineering:
o

Afforestation: Trees reduce runoff and erosion


Floodplain zoning: Limits building in high-risk areas


River restoration: Allowing rivers to flow naturally

2.3 Coasts

Wave formation: Wind friction on sea surface


Constructive waves: Build beaches →strong swash


Destructive waves: Erode coast →strong backwash


Landforms:

o
Erosional: Cliffs, caves, arches, stacks →formed by hydraulic
action & abrasion
o
o
Depositional: Beaches, spits, bars →formed by longshore
drift and deposition
o

Coastal management:

o
Hard engineering: Artificial, expensive but effective
o

Sea wall: Reflects waves, protects land


Groynes: Traps sand, prevents longshore drift


Rock armour (rip-rap): Large boulders absorb wave
energy


Revetments: Sloped structures to reduce erosion

o
Soft engineering: Works with nature, more sustainable
o

Beach nourishment: Adds sand to widen beach


Managed retreat: Allow flooding of low-value land


Dune regeneration: Stabilising dunes with plants

2.4 Weather

Stevenson screen: Shields instruments from sun/rain →accurate
readings


Instruments:

o
Thermometer: Measures temperature
o
o
Barometer: Measures pressure →high = dry, low = rain
o
o
Anemometer: Wind speed
o
o
Rain gauge: Rainfall amount
o
o
Wind vane: Wind direction
o
2.5 Climate and Natural Vegetation

Equatorial: Hot + wet all year →supports rainforest


Desert: Hot days, cold nights, dry →sparse vegetation


Vegetation adaptations:

o
Rainforest: Drip-tips shed water, buttress roots support tall
trees
o
o
Desert: Small leaves reduce water loss, deep roots access
water
o

Deforestation effects: Reduces biodiversity, worsens climate
change, causes erosion

THEME 3: Economic Development
3.1 Development

HDI components: Health, income, education →ranks country
progress


LIC/MIC/HIC: Grouping by income (low/middle/high)


Causes of inequality: History, corruption, geography →impact
development

3.2 Food Production

Arable farming: Crops


Pastoral farming: Animals


Inputs, processes, outputs: Farming as a system


Problems: Crop failure, pests, soil issues


Solutions: Modern tech, irrigation, chemicals

3.3 Industry

Primary: Extract resources (e.g. fishing)


Secondary: Make products (e.g. factory)


Tertiary: Services (e.g. banking)


Factors: What affects where industries locate (e.g. power, roads)


Globalisation impacts: TNCs move jobs globally, may harm
environment

3.4 Tourism

Reasons for growth: Cheaper flights, rising incomes, internet
promotion


Benefits:

o
Employment: Direct (guides, hotels) & indirect (farming,
transport)
o
o
Government revenue: Entry fees, taxes
o
o
Infrastructure: Roads, airports improve
o

Costs:

o
Environmental damage: Litter, trampling, habitat loss
o
o
Cultural erosion: Locals pressured to change traditions
o
o
Seasonal jobs: Not secure year-round
o

Sustainable tourism:

o
Eco-lodges: Built with local materials
o
o
Community tourism: Involves and benefits locals
o
o
Controlled visitor numbers: Protect ecosystems
o
3.5 Energy

Fossil fuels: Coal, oil, gas →cheap but non-renewable and polluting


Renewables:

o
Solar: Uses sunlight →clean but weather dependent
o
o
Wind: Turbines use wind →variable output
o
o
Hydro: Dams use water flow →reliable but can displace
people
o
o
Geothermal: Earth’s heat →location-specific
o
o
Biomass: Organic material burned →renewable with emissions
o

Energy gap: When energy demand exceeds supply

3.6 Water

Water use: Farming uses most, then industry, homes


Water scarcity: Not enough clean water →caused by overuse,
drought, pollution


Management:

o
Dams/reservoirs: Store water for dry periods
o
o
Desalination: Turns seawater into freshwater (expensive)
o
o
Water conservation: Reduce leaks, efficient irrigation
o
o
Water recycling: Reuse treated wastewater for
farming/industry
o
3.7 Environmental Risks

Deforestation:

o
Causes: Logging, farming, mining
o
o
Effects: Biodiversity loss, CO₂ rise, soil erosion
o
o
Solutions: Reforestation, protected zones, sustainable
logging
o

Soil erosion:

o
Causes: Overgrazing, deforestation, poor farming
o
o
Effects: Reduced fertility, dust storms
o
o
Solutions: Contour ploughing, windbreaks, crop rotation
o

Desertification:

o
Causes: Overuse, drought, climate change
o
o
Effects: Land degradation, migration
o
o
Solutions: Tree planting, controlled grazing, water-saving
methods
o

Pollution types:

o
Air: From factories, cars →causes respiratory issues
o
o
Water: From sewage, chemicals →harms wildlife
o
o
Noise: From traffic, industry →affects health
o
Exam Tip Keywords:

Define: give meaning


Describe: say what you see


Explain: give reasons


Suggest: apply your knowledge


Evaluate: pros & cons with judgement


Compare: similarities and differences

� Case Studies (Full-Length)
Theme 1 – Population and Settlement
Kenya – High Population Growth

Causes: High birth rate (29 births/1000), low contraceptive use,
rural traditions valuing large families.


Impacts: Over 40% of population under age 15 →strain on schools,
healthcare, housing, jobs. High dependency ratio and risk of slum
expansion in cities like Nairobi.


Responses: Government-backed family planning (since 1980s),
education of women, international aid (e.g. Marie Stopes clinics).
Mixed success due to cultural resistance and rural inaccessibility.


Evaluation: Progress has been made in urban areas, but rural
regions still lack access to services. The fertility rate is declining
slowly, but population growth remains high and poses long-term
challenges for sustainable development. Government-backed family
planning (since 1980s), education of women, international aid (e.g.
Marie Stopes clinics). Mixed success due to cultural resistance and
rural inaccessibility.

Russia – Population Decline

Causes: Low birth rate (11/1000), high male death rate (alcoholism,
disease), emigration post-1990s.


Impacts: Labour shortages, ageing population, declining rural
settlements, economic slowdown.


Responses: Cash incentives (Maternity Capital ~£6,000), pronatalist campaigns, subsidised housing for families. Some shortterm increases, but trend remains negative.


Evaluation: Government incentives boosted birth rate slightly in
early 2010s but have not reversed the overall trend. Ongoing
health and economic issues mean population decline likely to
continue unless deeper reforms are made. Cash incentives
(Maternity Capital ~£6,000), pro-natalist campaigns, subsidised
housing for families. Some short-term increases, but trend remains
negative.

Kibera, Nairobi – Urbanisation and Slums

Causes: Rural-urban migration, unemployment, population growth.


Impacts: 1+ million people in <2.5 km²; no legal land rights, poor
sanitation, waterborne diseases, youth unemployment, crime.


Responses: Slum Upgrading Programme (Kenya Gov + UN-Habitat):
housing improvements, water access, sanitation.


Evaluation: Some infrastructure improved, but high demand and
governance issues mean many still live in poor conditions.

Theme 2 – The Natural Environment
Montserrat – Volcanic Eruption (1997)

Causes: Destructive boundary – Atlantic plate subducts Caribbean
plate →dome collapse + pyroclastic flows.


Impacts: 19 deaths, Plymouth (capital) buried, 2/3 population
evacuated, economy collapsed (tourism/farming).


Responses: UK provided £420m aid, exclusion zone set, new capital
(Brades) developed, Montserrat Volcano Observatory built.


Evaluation: Effective monitoring now in place, but recovery has
taken decades.

Gorkha, Nepal Earthquake (2015)

Causes: Collision of Indian and Eurasian plates; shallow focus.


Impacts: 9,000 deaths, 600,000 buildings damaged, $5bn losses,
tourism decline.


Responses: International aid ($1bn pledged), rebuilding with quakeresistant designs, government criticised for slow delivery.


Evaluation: Raised awareness of structural risk but rebuilding
remains incomplete in rural areas.

Rhône Delta, France – River Landforms

Geography: Formed from sediment deposition by Rhône River into
the Mediterranean.


Uses: Agriculture (rice, vineyards), tourism, biodiversity hotspots.


Management: Canals, dykes, regulation of water flow to prevent
flooding.


Evaluation: Productive land and wildlife preserved, but area still
vulnerable to sea level rise and wetland loss.Canals, dykes,
regulation of water flow to prevent flooding.

Palisadoes, Jamaica – Coastal Management

Problem: Narrow tombolo at risk of erosion from hurricanes and
sea level rise.


Management: $65m project: 2.5 km rock revetment + groynes, road
elevation.


Evaluation: Short-term success; long-term vulnerability remains
due to sea level rise.

Amazon Rainforest, Brazil – Deforestation

Causes: Cattle ranching (80%), logging, soy farming, mining, road
construction (e.g. BR-163).


Impacts: 17% of forest lost since 1970, CO₂ emissions, biodiversity
loss, indigenous displacement.


Responses: IBAMA enforcement, satellite monitoring, NGO
education campaigns.


Evaluation: Effective in protected zones; illegal logging and policy
rollbacks still challenge progress.

Thar Desert, India/Pakistan – Desert Environment

Challenges: <250 mm rain/year, poor soils, overgrazing, salinisation.


Adaptations: Indira Gandhi Canal (650 km) brings water to Jodhpur;
drought-resistant millet, nomadic herding.


Evaluation: Some land recovered, but over-irrigation causing new
soil issues.

Theme 3 – Economic Development
Egypt – Development in an Arid Country

Challenges: 95% of people live along Nile; desert limits agriculture.


Development Strategies: Aswan Dam controls flooding and
irrigates crops. Tourism (pyramids), Suez Canal revenue, new cities
(e.g. New Cairo).


Evaluation: Some progress, but still high unemployment and urbanrural gap.

Haiti – Low HDI and Natural Hazards

Causes: LIC, corrupt government, on a fault line.


Impacts: 230,000+ dead in 2010 quake, $7.8bn damage, cholera
outbreak.


Responses: UN & NGOs provided emergency aid, 1.5 million in camps,
rebuilding slow.


Evaluation: Foreign aid essential but poor coordination; resilience
remains low.

India – The Green Revolution

Causes: 1960s food shortages.


Impacts: Wheat yield doubled in Punjab; reduced famine; widened
rich-poor farmer gap; increased water + chemical use.


Responses: HYVs, irrigation, subsidies.


Evaluation: Boosted food supply and self-sufficiency, but created
regional inequality, soil degradation, and dependence on
fertilisers.Boosted food supply but not sustainable in all regions.

China – Three Gorges Dam

Purpose: Hydropower (22,500 MW), flood control, navigation.


Impacts: 1.3 million displaced, habitat loss, sediment blocked.


Evaluation: Generates clean energy for 60+ million, but social and
ecological costs high.

Shell in Nigeria – TNC Impacts

Causes: Oil-rich Niger Delta.


Impacts: 9 million barrels spilled since 1958, water pollution,
conflict.


Responses: Shell built roads, clinics, but local resentment persists.


Evaluation: Profits help GDP, but environment + local rights poorly
protected.

Kenya – Safari Tourism

Benefits: 12% of GDP, jobs, wildlife conservation, cultural exchange.


Problems: Wildlife stress, Maasai displacement, infrastructure
strain.


Responses: Eco-tourism, community projects (e.g. Il Ngwesi Lodge),
park entry fees.


Evaluation: Positive economic impact but must balance growth with
sustainability.

You’re ready — revise smart, stay calm, and good luck! ✅
Got it! I’ll add advantages and disadvantages to the main notes for Themes 1-3,
excluding the case studies. Here’s the enhanced cram pack with pros and cons where
relevant:
THEME 1: Population and Settlement
1.1 Population Dynamics

Birth rate & Death rate:
Advantage: Understanding these helps governments plan healthcare and
services.
Disadvantage: High birth rates can strain resources; high death rates reflect
poor living conditions.


Fertility rate:
Advantage: Helps predict future population growth.
Disadvantage: High fertility may cause overpopulation pressures.


Infant mortality rate & Life expectancy:
Advantage: Indicators of healthcare quality.
Disadvantage: High infant mortality signals poor health services.


DTM stages:
Advantage: Useful for predicting demographic trends and planning.
Disadvantage: Model doesn’t always fit all countries perfectly, especially with
migration.

1.2 Migration

Push factors & Pull factors:
Advantages: Migration can relieve pressure on rural areas, supply labor to
cities.
Disadvantages: Can cause brain drain, overcrowding, or social tensions.


Voluntary vs Forced migration:
Advantage: Voluntary migration can boost economy and skills.
Disadvantage: Forced migration causes humanitarian crises and instability.

1.3 Population Structure

Youthful population:
Advantage: Large future workforce potential.
Disadvantage: High dependency ratio strains education and healthcare.


Ageing population:
Advantage: Experienced workforce, stable population.
Disadvantage: High pension and healthcare costs, labor shortages.

1.4 Population Density and Distribution

Dense areas:
Advantages: Better services, economic opportunities.
Disadvantages: Overcrowding, pollution, traffic congestion.


Sparse areas:
Advantages: Low pollution, natural environment preserved.
Disadvantages: Poor access to services, isolation.

1.5 Settlements and Service Provision

High-order goods:
Advantages: Wider variety, attracts shoppers from large areas.
Disadvantages: Expensive to provide, require big markets.


Low-order goods:
Advantages: Essential, frequent use.
Disadvantages: Limited profit margins.


Threshold population:
Advantage: Helps businesses decide where to open.
Disadvantage: Small settlements may lack services.

1.6 Urban Settlements

CBD:
Advantages: Centralized services, economic hub.
Disadvantages: High land costs, congestion.


Land use zones:
Advantages: Organizes city functions, reduces conflict.
Disadvantages: Can cause social segregation.


Bid rent theory:
Advantage: Explains land value patterns.
Disadvantage: Modern factors (e.g. transport) sometimes override it.

1.7 Urbanisation

Advantages: Economic growth, better services, innovation hubs.


Disadvantages: Overcrowding, slums, pollution, infrastructure strain.

THEME 2: The Natural Environment
2.1 Earthquakes and Volcanoes

Destructive margin:
Advantages: Creates fertile soils, geothermal energy.
Disadvantages: High risk of disasters, damage.


Constructive margin:
Advantages: New land formation, less violent eruptions.
Disadvantages: Earthquake risk.


Conservative margin:
Advantages: Rarely forms volcanoes.
Disadvantages: Friction causes severe earthquakes.

2.2 Rivers

Hard engineering (dams, embankments, flood walls):
Advantages: Effective flood control, water supply, hydropower.
Disadvantages: Expensive, disrupt ecosystems, displacement.


Soft engineering (afforestation, floodplain zoning, river restoration):
Advantages: Sustainable, cheaper, protects environment.
Disadvantages: Less immediate protection, requires land use changes.

2.3 Coasts

Hard engineering (sea walls, groynes, rock armour, revetments):
Advantages: Strong protection, immediate effect.
Disadvantages: Expensive, unnatural, can worsen erosion elsewhere.


Soft engineering (beach nourishment, managed retreat, dune
regeneration):
Advantages: Environmentally friendly, sustainable.
Disadvantages: Maintenance needed, less effective in storms.

2.4 Weather

Use of instruments:
Advantages: Accurate data for forecasting and planning.
Disadvantages: Expensive, maintenance needed.

2.5 Climate and Natural Vegetation

Vegetation adaptations:
Advantages: Survival in harsh climates, biodiversity.
Disadvantages: Sensitive to climate change and deforestation.


Deforestation effects:
Advantages: Provides resources, land for farming.
Disadvantages: Loss of biodiversity, soil erosion, climate impact.

THEME 3: Economic Development
3.1 Development

HDI:
Advantages: Comprehensive development measure.
Disadvantages: Doesn’t capture inequality or environmental factors fully.


Causes of inequality:
Advantages: Identifying causes helps target policies.
Disadvantages: Hard to change historical/geographical factors quickly.

3.2 Food Production

Modern technology, irrigation, chemicals:
Advantages: Increases yields, food security.
Disadvantages: Environmental damage, water depletion, health risks.

3.3 Industry

TNCs/globalisation:
Advantages: Jobs, technology transfer, economic growth.
Disadvantages: Exploitation, environmental damage, local business decline.

3.4 Tourism

Benefits: Jobs, income, infrastructure development.


Costs: Environmental damage, cultural loss, seasonal unemployment.


Sustainable tourism:
Advantages: Protects environment and culture, long-term viability.
Disadvantages: May limit tourist numbers and income.

3.5 Energy

Fossil fuels:
Advantages: Reliable, established infrastructure.
Disadvantages: Pollution, finite resources, climate change.


Renewables:
Advantages: Sustainable, low emissions.
Disadvantages: Intermittent supply, high upfront costs, location limits.


Energy gap:
Disadvantage: Limits development and quality of life.

3.6 Water

Dams/reservoirs:
Advantages: Water security, hydropower.
Disadvantages: Displacement, ecosystem disruption.


Desalination:
Advantages: Provides freshwater from seawater.
Disadvantages: Expensive, energy intensive.


Water conservation and recycling:
Advantages: Sustainable, reduces scarcity.
Disadvantages: Requires investment and public cooperation.

3.7 Environmental Risks

Deforestation:
Advantages: Economic resource, land for agriculture.
Disadvantages: Biodiversity loss, climate impact.


Soil erosion:
Disadvantages: Reduces fertility, causes dust storms.


Desertification:
Disadvantages: Land degradation, food insecurity, migration.


Pollution:
Disadvantages: Health issues, environmental damage.

If you want me to put this in bullet-point or table format, or focus on any particular
theme, just say!