WAEC Geography 2026 past questions and answers

55 questions. Try each one, then open the answer to check yourself and read the explanation.

Question 2

Map Scale, Distance and Direction

Study the map of APASO DISTRICT to answer this question. The distance in kilometres from Tiko to Lao as the crow flies is approximately

Diagram for this question
  1. A.10.0 kilometres
  2. B.5.0 kilometres
  3. C.3.0 kilometres
  4. D.2.5 kilometres
Show the answer and explanation

Answer: B (5.0 kilometres)

Explanation

A straight line from Tiko to Lao, measured against the linear scale under the map, is about 4½-5 km.

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Question 3

Relief and Map Interpretation

Study the map of APASO DISTRICT to answer this question. The relief feature marked A - B in the mapped area can best be described as a

Diagram for this question
  1. A.ridge
  2. B.plateau
  3. C.knoll
  4. D.escarpment
Show the answer and explanation

Answer: B (plateau)

Explanation

Line A-B crosses high ground with steep edges and a broad, fairly level top (spot height 525 m): a plateau.

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Question 4

Relief and Map Interpretation

Study the map of APASO DISTRICT to answer this question. Which of the following methods of showing relief is represented by the symbol •525 in the mapped area?

Diagram for this question
  1. A.Benchmark
  2. B.Trigonometrical station
  3. C.Contour line
  4. D.Spot height
Show the answer and explanation

Answer: D (Spot height)

Explanation

A dot with a height beside it is a spot height.

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Question 5

Map Scale, Distance and Direction

Study the map of APASO DISTRICT to answer this question. What is the direction of Hom from Tiko?

Diagram for this question
  1. A.East
  2. B.West
  3. C.South East
  4. D.North West
Show the answer and explanation

Answer: B (West)

Explanation

Hom is almost due west of Tiko on the map (only very slightly north), so the direction is west.

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Question 6

Relief and Map Interpretation

Study the map of APASO DISTRICT to answer this question. The commodity that can best be transported from Hom to Asa based on the forest resources and the mode of transportation is

Diagram for this question
  1. A.foodstuff
  2. B.timber
  3. C.rice
  4. D.bauxite
Show the answer and explanation

Answer: B (timber)

Explanation

The railway from Hom to Asa runs through forest, so timber is the commodity carried.

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Question 7

Relief and Map Interpretation

Study the map of APASO DISTRICT to answer this question. Which of the following is the likely primary economic activity of the inhabitants of Tiko settlement?

Diagram for this question
  1. A.Fishing
  2. B.Hunting
  3. C.Trading
  4. D.Farming
Show the answer and explanation

Answer: D (Farming)

Explanation

Tiko is surrounded by farms (fm).

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Question 8

Relief and Map Interpretation

Study the map of APASO DISTRICT to answer this question. APASO town can be described as a

Diagram for this question
  1. A.linear settlement
  2. B.harbour town
  3. C.confluence town
  4. D.terminal town
Show the answer and explanation

Answer: C (confluence town)

Explanation

R. Joe flows into R. Apa right beside APASO, so the town stands at a confluence (where two rivers meet). The railway does not end at APASO; it continues to Tiko.

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Question 9

Relief and Map Interpretation

Study the map of APASO DISTRICT to answer this question. Which of the following is the predominant mode of transportation in the mapped area?

Diagram for this question
  1. A.Road
  2. B.River
  3. C.Rail
  4. D.Footpath
Show the answer and explanation

Answer: C (Rail)

Explanation

The railway runs right across the map from Hom through Asa and Lao to APASO and Tiko; roads are short.

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Question 10

Relief and Map Interpretation

Study the map of APASO DISTRICT to answer this question. The relief feature marked X - Y in the mapped area can best be described as a

Diagram for this question
  1. A.ridge
  2. B.knoll
  3. C.spur
  4. D.saddle
Show the answer and explanation

Answer: B (knoll)

Explanation

X-Y crosses a small isolated hill shown by closed contours in the south-east: a knoll.

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Question 11

Climate

The table below shows the temperature and rainfall distribution of station X. Use it to answer this question.
Month: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
Temperature (°C): 27, 28, 28, 28, 28, 26, 26, 25, 26, 26, 28, 28
Rainfall (mm): 30, 60, 120, 250, 280, 353, 400, 300, 450, 320, 100, 35
The annual range of temperature is

  1. A.28°C
  2. B.25°C
  3. C.3°C
  4. D.1°C
Show the answer and explanation

Answer: C (3°C)

Explanation

28°C − 25°C = 3°C.

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Question 12

Climate

The table below shows the temperature and rainfall distribution of station X. Use it to answer this question.
Month: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
Temperature (°C): 27, 28, 28, 28, 28, 26, 26, 25, 26, 26, 28, 28
Rainfall (mm): 30, 60, 120, 250, 280, 353, 400, 300, 450, 320, 100, 35
What is the annual rainfall recorded at Station X?

  1. A.225 mm
  2. B.420 mm
  3. C.2689 mm
  4. D.2698 mm
Show the answer and explanation

Answer: D (2698 mm)

Explanation

Adding the twelve months gives 2,698 mm.

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Question 13

Climate

The table below shows the temperature and rainfall distribution of station X. Use it to answer this question.
Month: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
Temperature (°C): 27, 28, 28, 28, 28, 26, 26, 25, 26, 26, 28, 28
Rainfall (mm): 30, 60, 120, 250, 280, 353, 400, 300, 450, 320, 100, 35
The type of climate represented by Station X is

  1. A.Tropical continental
  2. B.Hot desert
  3. C.Mediterranean
  4. D.equatorial
Show the answer and explanation

Answer: D (equatorial)

Explanation

High temperatures all year with a tiny range (3°C) and heavy rain (about 2,700 mm) in every month mean an equatorial climate.

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Question 14

Wind and Desert Landforms

Which of the following landforms is associated with wind deposition?

  1. A.Barchan
  2. B.Inselberg
  3. C.Zeugen
  4. D.Blowhole
Show the answer and explanation

Answer: A (Barchan)

Explanation

A barchan is a dune built from wind-deposited sand.

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Question 15

The Earth and Solar System

Which of the following pairs are effects of rotation of the Earth? I. Day and night II. Phases of the moon III. Shape of the milky Way galaxy IV. Twilight

  1. A.I and III only
  2. B.I and IV only
  3. C.II and III only
  4. D.II and IV only
Show the answer and explanation

Answer: B (I and IV only)

Explanation

Rotation brings day and night and the gradual change between them (twilight); moon phases come from the moon's orbit.

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Question 16

Rivers and River Landforms

One of the features found in a region where river capture has taken place is a

  1. A.delta
  2. B.spur
  3. C.levee
  4. D.wind gap
Show the answer and explanation

Answer: D (wind gap)

Explanation

The beheaded river's former valley is left dry as a wind gap.

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Question 17

Earth Movements and Vulcanicity

A rift valley is formed as a result of

  1. A.thunderstorm acting on the Earth's crust
  2. B.denudation acting on the Earth's crust
  3. C.tensional tectonic forces acting on the Earth's crust
  4. D.vertical erosion acting on the Earth's crust
Show the answer and explanation

Answer: C (tensional tectonic forces acting on the Earth's crust)

Explanation

Tension pulls the crust apart, creating parallel faults; the block between them sinks.

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Question 18

Earth Movements and Vulcanicity

"Sides are very steep, the top is almost flat and rises above lowlands on their sides". Which of the following types of mountain does the characteristics above describe?

  1. A.Fold mountain
  2. B.Block mountain
  3. C.Residual mountain
  4. D.Volcanic mountain
Show the answer and explanation

Answer: B (Block mountain)

Explanation

Steep fault scarps and a flat top describe a block mountain (horst).

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Question 19

Latitude, Longitude and Time

What will be the local time in Town X located on longitude 60°W when it is 10:00am at Tema which is located on the Greenwich meridian?

  1. A.5:00am
  2. B.5:00pm
  3. C.6:00am
  4. D.6:00pm
Show the answer and explanation

Answer: C (6:00am)

Explanation

60° × 4 min = 4 hours; X is west, so it is behind: 10.00 am − 4 h = 6.00 am.

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Question 20

Underground Water and Karst

Which of the following pairs of features are found in a limestone region? I. stalactite II. Stack III. Stalagmite IV. Levee

  1. A.I and IV only
  2. B.I and III only
  3. C.II and IV only
  4. D.III and IV only
Show the answer and explanation

Answer: B (I and III only)

Explanation

Stalactites and stalagmites form in limestone caves; stacks are coastal and levees are river features.

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Question 21

Earth Movements and Vulcanicity

Hot springs are usually associated with

  1. A.earthquakes
  2. B.faulting
  3. C.folding
  4. D.volcanicity
Show the answer and explanation

Answer: D (volcanicity)

Explanation

Groundwater heated by magma rises as hot springs in volcanic areas.

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Question 22

Weather

Calculate the temperature at the peak of a mountain whose height is 8000 metres when the temperature at the foot of the same mountain is 8°C above sea level.

  1. A.60°C
  2. B.-44°C
  3. C.52°C
  4. D.44°C
Show the answer and explanation

Answer: B (-44°C)

Explanation

8 × 6.5 = 52°C fall; 8 − 52 = −44°C.

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Question 25

Coastal Landforms

Which of the following arrangement is the correct order of the various coastal features formed before a stack is finally produced?

  1. A.Cave, headland, arch, stack
  2. B.Headland, arch, cave, stack
  3. C.Cave, arch, headland, stack
  4. D.Headland, cave, arch, stack
Show the answer and explanation

Answer: D (Headland, cave, arch, stack)

Explanation

Waves erode a headland into a cave, the cave into an arch, and the arch collapses to leave a stack.

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Question 26

Vegetation

The semi-arid regions are often characterized by limited vegetation with

  1. A.thorny plants species
  2. B.luxuriant evergreen trees
  3. C.distinct layered canopy
  4. D.single plant species
Show the answer and explanation

Answer: A (thorny plants species)

Explanation

Semi-arid plants are thorny and drought-resistant to reduce water loss.

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Question 27

Structure of the Earth

Which of the following layers of the structure of the earth is found immediately beneath the crust?

  1. A.Hydrosphere
  2. B.Mantle
  3. C.Core
  4. D.Atmosphere
Show the answer and explanation

Answer: B (Mantle)

Explanation

The mantle lies directly below the crust.

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Question 28

Earth Movements and Vulcanicity

Geysers are extrusive features produced by

  1. A.faulting
  2. B.folding
  3. C.earthquake
  4. D.volcanicity
Show the answer and explanation

Answer: D (volcanicity)

Explanation

Geysers are jets of hot water and steam from volcanic areas.

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Question 29

The Earth and Solar System

The farthest planet from the sun is

  1. A.Jupiter
  2. B.Saturn
  3. C.Neptune
  4. D.Uranus
Show the answer and explanation

Answer: C (Neptune)

Explanation

Neptune is the eighth and outermost planet.

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Question 32

Environmental Hazards and Conservation

The disasters caused by man to the environment are called

  1. A.environmental imbalance
  2. B.environmental balance
  3. C.environmental intervention
  4. D.environmental hazards
Show the answer and explanation

Answer: D (environmental hazards)

Explanation

Damaging events caused by human activity (pollution, deforestation) are environmental hazards.

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Question 34

Wind and Desert Landforms

Abrasion in arid and semi-arid regions involves the

  1. A.lifting and blowing of loose rock materials along the coastal area
  2. B.wearing away of rock surfaces by the action of rock particles carried by wind
  3. C.gradual rolling of large rock fragmentation on the ground
  4. D.movement of coarse rock particles in series of hops
Show the answer and explanation

Answer: B (wearing away of rock surfaces by the action of rock particles carried by wind)

Explanation

Wind abrasion is the sand-blasting of rock by particles the wind carries.

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Question 35

Weather

What will be the temperature at the peak of a mountain which is 3000 metres above the sea level if the temperature at the foot of the same mountain which is 1000 metres above the sea level is 26°C?

  1. A.13°C
  2. B.23°C
  3. C.31°C
  4. D.39°C
Show the answer and explanation

Answer: A (13°C)

Explanation

The climb is 2,000 m: 2 × 6.5 = 13°C fall; 26 − 13 = 13°C.

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Question 36

Latitude, Longitude and Time

Lota and Babo towns lie along the same meridian. If Lota and Babo are located on latitudes 47°N and 33°S respectively, what is the approximate distance in kilometres between the two towns?

  1. A.1,554 kilometres
  2. B.4,440 kilometres
  3. C.5,217 kilometres
  4. D.8,880 kilometres
Show the answer and explanation

Answer: D (8,880 kilometres)

Explanation

Opposite hemispheres: 47 + 33 = 80° × 111 km = 8,880 km.

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Question 37

Manufacturing Industry

Which of the following pairs of characteristics is common to most manufacturing industries in West Africa? I. Sophisticated technology II. Labour intensive III. Diversified production line IV. Consumer goods oriented

  1. A.I and II only
  2. B.II and III only
  3. C.II and IV only
  4. D.I and III only
Show the answer and explanation

Answer: C (II and IV only)

Explanation

Most West African factories use much labour and make consumer goods (food, drinks, textiles).

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Question 38

Population

An advantage of high population density is

  1. A.under-utilization of resources
  2. B.availability of labour
  3. C.less social amenities
  4. D.high vehicular traffic
Show the answer and explanation

Answer: B (availability of labour)

Explanation

Many people in an area provide a ready labour force.

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Question 39

Mining and Energy

The use of limestone in the process of smelting iron ore is for it to

  1. A.act as a flux to remove impurities from the iron ore
  2. B.combine with rock waste to reduce heat
  3. C.produce heat for melting iron ore during the day
  4. D.speed up the process of steel making during the day
Show the answer and explanation

Answer: A (act as a flux to remove impurities from the iron ore)

Explanation

Limestone acts as a flux, combining with impurities to form slag.

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Question 40

Transport, Trade and Tourism

Which of the following options best explains the function of entrepots? They

  1. A.act as ferry terminal for goods and passengers crossing narrow seas
  2. B.are ports where goods are imported, stored and re-exported to other countries
  3. C.receive goods and passengers for their countries
  4. D.are used as military base for defense purposes
Show the answer and explanation

Answer: B (are ports where goods are imported, stored and re-exported to other countries)

Explanation

An entrepôt receives goods, stores them and re-exports them (e.g. Singapore, Rotterdam).

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Question 41

Manufacturing Industry

A typical example of a cottage industry is

  1. A.publishing industry
  2. B.food processing industry
  3. C.car assembly industry
  4. D.wood carving industry
Show the answer and explanation

Answer: D (wood carving industry)

Explanation

Wood carving is done by hand at home with simple tools.

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Question 42

Agriculture, Fishing and Lumbering

Bush fallow system of farming ensures

  1. A.application of artificial fertilizers
  2. B.mechanization of farmlands
  3. C.farmland regains its fertility naturally
  4. D.farms are managed by young women
Show the answer and explanation

Answer: C (farmland regains its fertility naturally)

Explanation

Resting the land lets natural vegetation restore soil fertility.

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Question 43

Population

Calculate the population density of country B if it has a population of 800 million and a total land area of 400,000km²

  1. A.20,000 persons per square kilometre
  2. B.2,000 persons per square kilometre
  3. C.500 persons per square kilometre
  4. D.20 persons per square kilometre
Show the answer and explanation

Answer: B (2,000 persons per square kilometre)

Explanation

800,000,000 ÷ 400,000 = 2,000 persons per km².

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Question 45

Manufacturing Industry

Which of the following is not a factor to be considered in establishing a fruit processing industry in Nigeria?

  1. A.Proximity to source of raw materials
  2. B.Availability of capital
  3. C.Ready market
  4. D.Proximity to pipelines and ziplines
Show the answer and explanation

Answer: D (Proximity to pipelines and ziplines)

Explanation

Fruit factories need fruit, capital and markets; pipelines are irrelevant.

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Question 46

Environmental Hazards and Conservation

Which of the following is a major environmental concern associated with hydro-electric power generation?

  1. A.Water pollution of neighbouring communities
  2. B.Air pollution and industrial waste
  3. C.Habitat disruption and displacement
  4. D.Soil erosion and earthquake
Show the answer and explanation

Answer: C (Habitat disruption and displacement)

Explanation

Dams flood large areas, destroying habitats and displacing people.

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Question 47

Transport, Trade and Tourism

When a country's import exceeds its export, international trade is said to be

  1. A.favourable
  2. B.unfavourable
  3. C.balance
  4. D.optimum
Show the answer and explanation

Answer: B (unfavourable)

Explanation

Imports greater than exports give an unfavourable balance of trade.

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Question 48

Transport, Trade and Tourism

Which of the following is not a factor which promotes the development of tourism in Tropical African countries?

  1. A.Abundance of wildlife
  2. B.Good transportation system
  3. C.Presence of beaches
  4. D.Ineffective publicity
Show the answer and explanation

Answer: D (Ineffective publicity)

Explanation

Poor publicity discourages tourists.

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Question 49

West Africa and ECOWAS

Which of the following countries is a member of the Economic Community of West African States?

  1. A.Morocco
  2. B.Egypt
  3. C.Togo
  4. D.Chad
Show the answer and explanation

Answer: C (Togo)

Explanation

Togo is a West African ECOWAS member; the others are not.

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Question 50

Population

The movement of people from a town to a village can best be described as

  1. A.rural-rural migration
  2. B.urban-rural migration
  3. C.urban-urban migration
  4. D.rural-urban migration
Show the answer and explanation

Answer: B (urban-rural migration)

Explanation

Moving from an urban area to a rural one is urban-rural migration.

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Theory question 101

Transport, Trade and Tourism

(a) What is favourable balance of trade? (b) Outline five factors which hinder high volume of trade among countries in Tropical Africa. (c) Identify four advantages of favourable balance of trade in Tropical African countries

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Model answer

(a) A favourable balance of trade occurs when the value of a country's exports is greater than the value of its imports over a period.
(b) Similar products (mainly primary goods); poor transport and communication links; different currencies and exchange problems; tariffs and trade barriers; political instability and conflicts; colonial ties to Europe; low purchasing power; language barriers; smuggling.
(c) Increases foreign exchange reserves; strengthens the currency; more revenue for government; more jobs; funds for development; reduces foreign debt; encourages investment; raises standard of living.

Explanation

Define with exports greater than imports.

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Theory question 102

Settlement

(a) Identify five ways in which rural settlements depend on urban settlements in developing countries. (b) Highlight five characteristics of rural settlements in developing countries.

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Model answer

(a) Market for farm produce; supply of manufactured goods and farm inputs (fertilizer, tools); jobs for migrants; higher-order services (hospitals, banks, universities); administration and security; information, ideas and technology; transport terminals.
(b) Small population and area; mainly primary occupations (farming, fishing); homogeneous people; buildings of local materials; few social amenities; dispersed or linear layout; simple, quiet life; communal land ownership; close social ties.

Explanation

Five points each.

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Theory question 103

Population

(a) What is forced migration? (b) Identify four problems that migrants from developing countries face in developed countries (c) Outline five benefits of migration to the destination regions in Tropical Africa.

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Model answer

(a) Forced migration is the movement of people who are compelled to leave their homes or countries because of threats to their safety or survival, e.g. war, persecution or natural disasters.
(b) Unemployment or low-paid jobs; racial discrimination and xenophobia; housing problems; language barriers; culture shock and loneliness; non-recognition of certificates; risk of deportation; harsh climate.
(c) Larger labour force; skilled manpower; larger market; growth of towns and infrastructure; new ideas and cultural exchange; more investment and trade; more tax revenue.

Explanation

Name causes such as war in (a).

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Theory question 104

Nigeria: People and Economy

(a) Draw an outline map of Nigeria. On the map, show and name: (i) One area noted for local craft industries (ii) Kano (b) Explain four characteristics of local craft industries in Nigeria (c) Outline four economic benefits of local craft industries in Nigeria.

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Model answer

(a) Outline of Nigeria with title and north arrow; a craft area such as Kano/Bida (leather, brass, glass), Oyo/Iseyin (weaving, aso-oke), Benin (bronze casting), Akwete (cloth weaving) or Okigwe; Kano in the north.
(b) Small scale, often at home; simple tools and hand skills; local raw materials; family or apprentice labour; little capital; skills passed down generations; low output for local markets.
(c) Employment and income; use of local raw materials; preserve culture and attract tourists; earn foreign exchange from exports of crafts; reduce imports; training of apprentices; supplement farm incomes.

Explanation

Name a real craft centre.

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Theory question 105

Agriculture, Fishing and Lumbering

(a) What is plantation agriculture? (b) Outline five characteristics of plantation agriculture in Nigeria. (c) Identify four problems faced by farmers who practise plantation agriculture in Nigeria.

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Model answer

(a) Plantation agriculture is the large-scale cultivation of a single cash crop (e.g. oil palm, rubber, cocoa) on a large estate, mainly for export or industry.
(b) Large land area; one main crop (monoculture); mainly cash/export crops; large capital; hired skilled and unskilled labour; scientific methods (fertilizers, improved seedlings, machines); processing on the estate; good management; often owned by companies or government.
(c) High capital cost; land tenure problems; pests and diseases; fluctuating world prices; shortage of skilled labour; poor roads; labour disputes; competition from crude oil for labour and attention; insecurity.

Explanation

Four problems as phrases.

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Theory question 106

Nigeria: People and Economy

(a) Draw an outline map of Nigeria. On the map, locate and name: (i) one major source region noted for rural-urban migration. (ii) one major town in 6(a)(i). (b) Highlight five problems created in urban centres in Nigeria as a result of population growth. (c) Outline three factors which account for the low population in rural areas in Nigeria.

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Model answer

(a) Outline of Nigeria with title and north arrow; a source region such as the densely settled south-east (Igboland), the Middle Belt or the north-western rural areas; a major town in it, e.g. Enugu, Owerri or Sokoto.
(b) Unemployment; housing shortage and slums; traffic congestion; pressure on water, power, schools and hospitals; crime and social vices; pollution and waste disposal problems; high cost of living; spread of diseases.
(c) Rural-urban migration; lack of jobs; poor social amenities (electricity, water, health care); poor roads; insecurity (banditry, farmer-herder clashes); low farm incomes; natural hazards (drought, floods, desertification).

Explanation

Explain each factor briefly.

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Theory question 303

Rocks

(a) What is a metamorphic rock? (b) List two examples of metamorphic rocks (c) Outline five differences between a sedimentary rock and a metamorphic rock

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Model answer

(a) A metamorphic rock is a rock formed when an existing igneous or sedimentary rock is changed in form and composition by great heat and/or pressure.
(b) Marble; slate; gneiss; schist; quartzite; graphite.
(c) Sedimentary rocks form from deposited sediments, metamorphic from existing rocks changed by heat/pressure; sedimentary are stratified, metamorphic foliated or banded; sedimentary may contain fossils, metamorphic rarely; sedimentary are usually soft and porous, metamorphic hard and compact; sedimentary form at or near the surface, metamorphic deep in the crust or near intrusions; sedimentary are not crystalline, metamorphic often crystalline.

Explanation

Compare both rocks in each point.

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Theory question 304

Weathering, Erosion and Mass Movement

(a) Define the term weathering (b) Highlight three benefits of weathering to mankind. (c) Identify three factors which affect the rate of weathering.

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Model answer

(a) Weathering is the breakdown and decay of rocks in their original position by physical, chemical and biological processes.
(b) Forms soil for agriculture; produces sand, gravel and clay for building; concentrates minerals (e.g. bauxite, laterite); creates attractive landforms for tourism; releases plant nutrients.
(c) Climate (temperature and rainfall); rock type and mineral composition; rock structure (joints); relief and slope; vegetation and organisms; human activities; time.

Explanation

Short phrases are enough.

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Theory question 305

Structure of the Earth

(a) Define the term biosphere (b) Highlight four benefits of the biosphere (c) State five characteristics of the biosphere

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Model answer

(a) The biosphere is the zone of the earth where life exists, including parts of the lithosphere, hydrosphere and atmosphere.
(b) Provides food; timber and fuel; medicines; oxygen from plants; raw materials for industry; recycles nutrients; supports tourism and recreation; regulates climate.
(c) Contains all living organisms; overlaps the lithosphere, hydrosphere and atmosphere; a thin zone only a few kilometres thick; powered by energy from the sun; organisms interact in food chains and ecosystems; materials are recycled (water, carbon, nitrogen cycles); varies from place to place (biomes).

Explanation

Mention the three spheres it overlaps.

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Theory question 306

Rivers and River Landforms

(a) What is an alluvial fan? (b) With the aid of a diagram, describe the characteristics and mode of formation of an alluvial fan.

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Model answer

(a) An alluvial fan is a fan-shaped deposit of sand, gravel and boulders laid down where a stream flows out of a steep mountain valley onto a flat plain.
(b) Diagram: a mountain front, a stream leaving a narrow valley and a fan-shaped spread of deposits on the plain. Characteristics: fan or cone shaped; apex at the mouth of the valley; coarse material near the apex, finer towards the edge; streams divide into many channels; common in arid and semi-arid areas. Formation: a fast stream carries a heavy load down a steep slope; on reaching the gentle plain its gradient and speed drop suddenly; it deposits its load; channels become blocked and the stream shifts from side to side, spreading deposits in a fan; repeated deposition builds the fan up.

Explanation

Stress the sudden drop in speed.

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Theory question 307

Weather

(a) Identify four factors which influence the amount of rainfall received in an area. (b) With the aid of a diagram, describe how latitude affects the temperature of a place.

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Model answer

(a) Latitude; distance from the sea; relief (windward or leeward side); prevailing winds and air masses; ocean currents; pressure belts (e.g. ITCZ); vegetation; altitude.
(b) Diagram: globe with the sun's rays striking the equator vertically and the poles obliquely. In low latitudes the midday sun is high (overhead at some time of year), so its rays are concentrated on a small area and pass through a thin layer of atmosphere, giving high temperatures; towards the poles the rays are slanting, spread over a larger area and travel through more atmosphere, losing more heat, so temperatures are lower. Temperature therefore decreases from the equator to the poles.

Explanation

Compare vertical and slanting rays.

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Theory question 308

Environmental Resources

(a) Define the term water resources (b) Identify three effects of water pollution (c) Outline three usefulness of water resources

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(a) Water resources are sources of water useful to people and living things, such as rivers, lakes, seas, groundwater and rainfall.
(b) Water-borne diseases (cholera, typhoid); death of fish and other aquatic life; shortage of clean drinking water; eutrophication; loss of income for fishermen; bad smell and ugliness.
(c) Drinking and domestic use; irrigation; industry; hydroelectric power; fishing; transport; recreation and tourism.

Explanation

Three of each.

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