Examkin

Regional Geography of Nigeria

181 soru

Tüm türler181Çoktan seçmeli105Doğru / Yanlış2Eşleştirme38Sıralama32Boşluk doldurma4
Soru 101Soru →

Match each Nigerian mineral or energy resource on the left with its principal deposit location or major production center on the right.

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Öğeler

Gold
Lead and Zinc
Lignite (Brown Coal)
Natural Gas Thermal Power

Eşleşmeler

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Cevap

Gold matches with Ilesa (Osun State); Lead and Zinc matches with Abakaliki (Ebonyi State); Lignite (Brown Coal) matches with Asaba (Delta State); Natural Gas Thermal Power matches with Ughelli (Delta State).
Each resource is matched accurately to its primary deposit site or power plant: Gold to Ilesa, Lead and Zinc to Abakaliki, Lignite to Asaba, and Natural Gas Thermal Power to Ughelli.

Adım Adım Çözüm

1
Locate key metallic mineral deposits across Nigeria.
Gold is associated with the Ilesa goldfield in Osun State, while major lead and zinc ores are located at Abakaliki in Ebonyi State.
Recall spatial distribution of solid metallic minerals.
2
Locate fuel and energy generation resources.
Lignite deposits are centered around Asaba in Delta State, and natural gas thermal power is generated at Ughelli in Delta State.
Distinguish between fossil fuel deposits and thermal power stations.

Anahtar Kavram

Spatial distribution of metallic minerals, solid fuel reserves, and gas power infrastructure in Nigeria.
Soru 102Soru →

An ecological study evaluates plant structural adaptations and indicator species across Nigeria's major biomes. Which of the following statements accurately matches a Nigerian vegetation zone with its defining structural adaptation and characteristic flora?

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Cevap: Guinea Savanna: Deciduous trees with thick fire-resistant bark, such as Isoberlinia and Lophira, growing alongside tall tussock grasses

Cevap

Guinea Savanna is accurately defined by deciduous trees with thick fire-resistant bark, such as Isoberlinia and Lophira, interspersed with tall tussock grasses.
The Guinea Savanna covers the broadest area in middle-belt Nigeria and is characterized by open woodland containing fire-resistant trees like Isoberlinia and Lophira, along with tall tussock grasses adapted to annual dry-season burning.

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1
Analyze the ecological adaptations of the Guinea Savanna belt in Nigeria.
The Guinea Savanna experiences distinct wet and dry seasons with periodic bush fires, leading to adaptations like thick, fire-resistant bark and deciduous leaf-shedding.
Matching structural adaptations to climatic stress identifies the correct ecological belt.
2
Identify key floral species associated with Guinea Savanna.
Dominant species include Isoberlinia, Lophira procera, Daniellia oliveri, and tall grasses (e.g., Pennisetum).
Indicator species verify vegetation zone classification.
3
Evaluate and eliminate options that incorrectly pair northern dry belts with coastal or rainforest adaptations.
Options placing rainforest cash crops in the Sudan zone or mangrove/desert flora in opposing latitudinal extremes are incorrect.
Verifies that distractors contain clear misattributions of vegetation characteristics across Nigeria's north-south gradient.

Anahtar Kavram

Vegetation Zones and Floral Adaptations in Nigeria
Tahmini Süre:2m 0s
Soru 103Soru →

Different regions across Nigeria experience distinct weather patterns influenced by geographic factors such as latitude, ocean proximity, and relief. Pair each Nigerian climatic zone on the left with its defining climatic characteristic on the right.

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Öğeler

Sub-equatorial Climate Zone
Tropical Hinterland Climate Zone
Tropical Continental Climate Zone
High Plateau (Montane) Climate Zone

Eşleşmeler

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Cevap

Sub-equatorial Climate Zone pairs with double rainfall maxima exceeding 2,000 mm2,000\text{ mm}; Tropical Hinterland Climate Zone pairs with single rainfall peak (1,000 mm−1,500 mm1,000\text{ mm} - 1,500\text{ mm}); Tropical Continental Climate Zone pairs with a dry season up to 7 months7\text{ months} and wide diurnal range; High Plateau Climate Zone pairs with temperature reduction by altitude to around 21∘C−22∘C21^\circ\text{C} - 22^\circ\text{C}.
Each Nigerian climatic zone has distinct thermal and moisture characteristics driven by latitude, distance from the Gulf of Guinea, and elevation. The Sub-equatorial coast receives double rainfall peaks and over 2,000 mm2,000\text{ mm} of rain. Moving northward, the Tropical Hinterland receives 1,000 mm−1,500 mm1,000\text{ mm} - 1,500\text{ mm} with a shorter rainy season, while the Tropical Continental zone farther north experiences up to 7 months7\text{ months} of dry season and high diurnal temperature ranges. The High Plateau climate features reduced temperatures (21∘C−22∘C21^\circ\text{C} - 22^\circ\text{C}) due to orographic altitude.

Adım Adım Çözüm

1
Analyze coastal influences in southern Nigeria
Identify that the moist Tropical Maritime (mT\text{mT}) air mass dominates the south for most of the year, causing heavy precipitation (>2,000 mm>2,000\text{ mm}) and a double rainfall peak.
This corresponds to the Sub-equatorial Climate Zone.
2
Examine the transitional central belt of Nigeria
Identify that moving inland yields moderate rainfall (1,000 mm−1,500 mm1,000\text{ mm} - 1,500\text{ mm}) with a single peak around July/August.
This corresponds to the Tropical Hinterland Climate Zone.
3
Evaluate the far northern region affected by the Sahara Desert
Identify that the prolonged presence of dry Tropical Continental (cT\text{cT}) air causes a dry season lasting up to 7 months7\text{ months} and high diurnal temperature variations.
This corresponds to the Tropical Continental (Sudan) Climate Zone.
4
Determine the effect of altitude on high relief zones like Jos Plateau
Apply the lapse rate principle, noting that higher elevation significantly lowers mean temperatures relative to surrounding plains.
This corresponds to the High Plateau (Montane) Climate Zone.

Anahtar Kavram

Climatic Regions of Nigeria and their spatial characteristics
Soru 104Soru →

Match each soil conservation and management strategy implemented in Nigeria on the left with the corresponding soil degradation threat and soil type it primarily addresses on the right.

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Öğeler

Establishment of multi-row shelterbelts and afforestation belts across Sokoto, Katsina, and Kano states
Installation of gabion check dams, drainage diversions, and bamboo revegetation along the Agulu-Nanka and Enugu escarpments
Implementation of stone terracing, contour ridging, and strip cropping on the elevated slopes of the Jos Plateau
Construction of protective dykes, tidal bunds, and controlled drainage systems across the coastal lowlands of the Niger Delta

Eşleşmeler

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Cevap

The correct pairings match each regional soil conservation practice in Nigeria to its target soil type and degradation mechanism: Shelterbelts in northern states control wind erosion on loose Regosols; Gabion check dams and revegetation in Southeastern escarpments stabilize deep gully erosion on friable sandy Ferrallitic soils; Terracing and contour ridging on the Jos Plateau prevent sheet erosion on shallow highland Ferruginous soils; Dykes and drainage controls in the Niger Delta manage tidal flooding and salinization in coastal Hydromorphic soils.
Each pair correctly links a distinct Nigerian geographic region and soil conservation method with its specific soil degradation process and soil group. Shelterbelts stabilize light-textured northern Regosols against wind erosion; gabions and biological planting remediate catastrophic gully erosion in deep Southeastern sandy Ferrallitic soils; stone terracing limits sheet erosion on Jos Plateau Ferruginous soils; and coastal bunds manage flooding/salinization in Niger Delta Hydromorphic soils.

Adım Adım Çözüm

1
Analyze Northern Nigerian environmental conditions and soil conservation responses.
In semi-arid states like Sokoto, Katsina, and Kano, dry harmattan winds induce wind erosion on loose, coarse-textured Regosols. Multi-row shelterbelts serve as physical barriers that reduce wind speed and retain soil moisture.
Matching shelterbelts to wind erosion control on northern sandy soils.
2
Evaluate soil degradation dynamics in Southeastern Nigeria.
Southeastern Nigeria (e.g., Agulu-Nanka in Anambra, Enugu) features deep, weakly structured sandy Ferrallitic soils on steep escarpments. High rainfall energy causes rapid gully incision, requiring mechanical structures like gabion check dams alongside deep-rooted biological cover (bamboo).
Matching escarpments and gully control structures to sandy Ferrallitic soils.
3
Examine highland slope management on the Jos Plateau.
The Jos Plateau experiences intense seasonal rainfall on sloping terrain underlain by thin Ferruginous tropical soils over crystalline basement rocks. Stone terracing and contour ridging break the slope length and slow water velocity to minimize sheetwash.
Matching highland terracing to sheet erosion control on Ferruginous soils.
4
Assess coastal soil management in the Niger Delta.
The low-lying Niger Delta consists of Hydromorphic and mangrove soils subject to daily tides, seasonal inundation, and saline intrusion. Dykes, tidal bunds, and managed drainage prevent coastal erosion and soil degradation due to excess salinity.
Matching coastal engineering controls to Hydromorphic and mangrove soil hazards.

Anahtar Kavram

Regional variation of soil degradation mechanisms and targeted soil conservation techniques across Nigerian soil zones
Tahmini Süre:2m 0s
Soru 105Soru →

Agricultural land-use in Nigeria exhibits a distinct spatial variation between the humid South and the dry North. While tree-crop plantation agriculture dominates the southern rainforest belt, nomadic pastoralism and grain crop farming prevail in the far northern Sudan and Sahel belts. What fundamental ecological factor primarily dictates this regional agricultural specialization across Nigeria?

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Cevap: The latitudinal gradient of total annual rainfall and duration of the rainy season

Cevap

The latitudinal gradient of total annual rainfall and duration of the rainy season
The correct answer identifies the latitudinal rainfall gradient as the main ecological factor. Nigeria's moisture regime varies significantly from the humid coast to the dry northern border. Southern rainforest zones receive heavy annual precipitation over an extended period, supporting moisture-demanding tree crops like oil palm and rubber. Conversely, northern savanna zones experience low annual rainfall concentrated into a short rainy season, favoring short-season grains (millet, sorghum, cowpeas) and extensive pastoral livestock grazing.

Adım Adım Çözüm

1
Analyze the spatial distribution of agricultural systems in Nigeria from South to North.
Southern Nigeria relies on perennial tree crops (oil palm, cocoa, rubber) requiring high moisture, whereas Northern Nigeria features grain farming (millet, sorghum) and pastoralism adapted to arid conditions.
Identifying spatial agricultural patterns is essential to evaluate underlying environmental drivers.
2
Evaluate the primary environmental variable controlling crop moisture availability across Nigeria.
Annual precipitation decreases systematically from over 3,000 mm at the southern coast to below 500 mm near the northern border, accompanied by a shorter wet season.
Water availability dictates crop survival and agricultural system viability.
3
Select the option that correctly identifies the climatic rainfall gradient as the principal determinant.
The latitudinal gradient of total annual rainfall and duration of the rainy season is the primary ecological control.
This climatic gradient directly creates the distinct agricultural zones across Nigeria.

Anahtar Kavram

Climatic controls on agricultural zonation in Nigeria
Soru 106Soru →

Limestone is an essential raw material for the industrial manufacturing of cement in Nigeria. Which of the following towns is a major location for limestone quarrying?

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Cevap: Ewekoro

Cevap

Ewekoro is a primary limestone quarrying and cement production center in Nigeria.
Ewekoro, located in Ogun State, is situated on extensive marine sedimentary formations rich in limestone. It hosts one of the oldest and largest cement plants in Nigeria.

Adım Adım Çözüm

1
Identify the industrial mineral specified in the question stem.
The target mineral is limestone, which is primarily utilized as raw material for cement manufacturing.
Limestone deposits in Nigeria are concentrated in sedimentary basins such as Ewekoro (Ogun State), Gboko (Benue State), and Nkalagu (Ebonyi State).
2
Evaluate the given location options against Nigeria's mineral distribution map.
Ewekoro matches limestone; Jos matches tin/columbite; Enugu matches coal; Bonny matches crude oil/natural gas.
Matching each location to its correct mineral deposit reveals that Ewekoro is the correct answer.

Anahtar Kavram

Geographical distribution of solid mineral resources in Nigeria
Soru 107Soru →

Geographically, Nigeria is situated entirely within both the Northern and Eastern Hemispheres, with its northernmost territorial extent reaching approximately 14∘N14^\circ\text{N} latitude along its border with the Republic of Niger.

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Cevap: True

Cevap

The statement is true because Nigeria's spatial location lies strictly between 4∘N4^\circ\text{N} and 14∘N14^\circ\text{N} latitude and 3∘E3^\circ\text{E} and 15∘E15^\circ\text{E} longitude, placing it entirely in the Northern and Eastern Hemispheres with Niger at its northern boundary.
Nigeria lies completely within the Northern and Eastern Hemispheres because its geographical coordinates are 4∘N4^\circ\text{N} to 14∘N14^\circ\text{N} latitude and 3∘E3^\circ\text{E} to 15∘E15^\circ\text{E} longitude. Its northern border terminates near latitude 14∘N14^\circ\text{N}, bordering Niger.

Adım Adım Çözüm

1
Analyze Nigeria's latitudinal position relative to the Equator (0∘0^\circ)
Nigeria extends from 4∘N4^\circ\text{N} in the south to 14∘N14^\circ\text{N} in the north, placing the entire territory in the Northern Hemisphere.
Any location with positive northern coordinates (∘N^\circ\text{N}) lies north of the Equator.
2
Analyze Nigeria's longitudinal position relative to the Prime Meridian (0∘0^\circ)
Nigeria extends from 3∘E3^\circ\text{E} in the west to 15∘E15^\circ\text{E} in the east, placing the entire country in the Eastern Hemisphere.
Any location with positive eastern coordinates (∘E^\circ\text{E}) lies east of Greenwich Meridian.
3
Verify the northern boundary neighbor at 14∘N14^\circ\text{N}
The northern boundary at 14∘N14^\circ\text{N} is shared with the Republic of Niger.
Niger forms Nigeria's extensive northern international border.

Anahtar Kavram

Absolute Location and Hemispheric Position of Nigeria
Soru 108Soru →

Southern Nigeria's coastal regions experience a double rainfall maximum with a noticeable drop in precipitation during July and August known as the 'August Break' (Little Dry Season). Which atmospheric mechanism accounts for this temporary dry spell while the Inter-Tropical Convergence Zone (ITCZ) is located at its northernmost position over West Africa?

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Cevap: The inland migration of the ITCZ deep into northern Nigeria, placing coastal areas under stable marine air with lower sea surface temperatures and atmospheric divergence.

Cevap

The inland migration of the ITCZ deep into northern Nigeria, placing coastal areas under stable marine air with lower sea surface temperatures and atmospheric divergence.
The correct option identifies that as the ITCZ advances to its northernmost position over West Africa during July and August, southern Nigeria is positioned well behind the main convective rain belt. Localized oceanic upwelling along the Gulf of Guinea brings cooler water to the coast, creating atmospheric stability, subsidence, and divergence that temporarily suppresses rain-producing convective clouds in the south.

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1
Analyze ITCZ position during the northern summer (July–August).
The ITCZ reaches its northernmost latitude (around 20°N–22°N) near the southern border of the Sahara Desert.
Solar heating at the Tropic of Cancer draws moisture-laden Tropical Maritime (mT) winds far into northern Nigeria.
2
Examine coastal oceanographic and atmospheric conditions in southern Nigeria during this period.
The coastal marine atmosphere undergoes cooling due to localized upwelling along the Gulf of Guinea, generating a temperature inversion and stable air stratification.
Atmospheric stability prevents strong convective updrafts, inhibiting deep cumulonimbus cloud formation along the coast.
3
Synthesize the mechanism causing the 'August Break' (Little Dry Season).
The deep inland position of the moisture front leaves coastal southern Nigeria under a zone of surface wind divergence and atmospheric stability.
This structural change causes a temporary cessation of heavy convection, creating the double rainfall maximum characteristic of the Sub-Equatorial climate belt.

Anahtar Kavram

Atmospheric mechanisms underlying the double rainfall maximum and August Break in Southern Nigeria
Tahmini Süre:2m 0s
Soru 109Soru →

Along the low-lying floodplains of the Niger and Benue Rivers as well as the coastal plains of Nigeria, periodic river flooding deposits rich sediments of silt and clay. Which soil group predominantly characterizes these riverine environments?

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Cevap: Alluvial soils

Cevap

Alluvial soils are predominantly found along the floodplains and valleys of major rivers such as the Niger and Benue.
Alluvial soils are formed from rich silt, sand, and organic matter deposited by rivers during seasonal flooding along river basins like the Niger and Benue, making them exceptionally fertile for wet-season and dry-season fadama farming.

Adım Adım Çözüm

1
Identify the geographical context and soil formation mechanism described in the stem.
The stem describes soils formed from silt and sediment deposition by periodic river flooding along low-lying floodplains.
River flood deposits are fluviatile sediments characteristic of riverine environments.
2
Match the depositional environment to the corresponding Nigerian soil classification group.
Soils derived from recent riverborne sediment deposits along river courses are classified as alluvial (or hydromorphic) soils.
Alluvial soils form specifically through the accumulation of waterborne river sediments.

Anahtar Kavram

Alluvial Soil Distribution in Nigeria
Soru 110Soru →

During the onset of the rainy season in Nigeria, nomadic Fulani pastoralists migrate with their zebu cattle herds away from the moist vegetation of the Middle Belt back toward the drier Sudan savanna of the Far North. What is the primary environmental factor driving this northward transhumance during the wet season?

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Cevap: The seasonal surge of tsetse fly populations in humid southern zones, which increases the incidence of trypanosomiasis among cattle.

Cevap

The primary environmental factor driving northward transhumance during the wet season is the seasonal surge of tsetse fly populations in humid southern zones, which increases the incidence of animal trypanosomiasis.
During the wet season, increased moisture and lush vegetation in the Middle Belt create optimal breeding conditions for tsetse flies, which transmit fatal animal trypanosomiasis (nagana) to zebu cattle. Consequently, pastoralists retreat to the drier Sudan savanna where open terrain and lower humidity suppress tsetse fly populations.

Adım Adım Çözüm

1
Analyze the seasonal migration pattern (transhumance) of pastoralists in Nigeria.
Pastoralists move south toward river valleys during the dry season for water and pasture, and return north during the wet season.
Understanding the environmental constraints in both ecological zones across seasons is necessary to pinpoint the migration cause.
2
Evaluate the environmental hazards present in the southern savanna/Middle Belt during the rainy season.
Increased rainfall and humidity promote dense vegetation growth, leading to heavy infestation by tsetse flies (vector of trypanosomiasis) and high humidity causing foot rot in zebu cattle.
Zebu cattle are highly susceptible to insect-borne diseases prevalent in humid, bush-covered environments.
3
Select the option that correctly identifies disease vector ecology as the decisive factor.
The risk of trypanosomiasis carried by tsetse flies in the wetter southern zones compels herdsmen to move cattle back to the drier, open northern savanna.
Drier northern savanna belts are natural low-risk environments for tsetse fly survival during the rainy season.

Anahtar Kavram

Transhumance and Environmental Determinants of Pastoralism in Nigeria
Tahmini Süre:2m 0s
Soru 111Soru →

In Nigeria's agricultural zonation, states located within the Middle Belt—such as Benue, Nasarawa, and Niger—are major producers of tuber crops like yam and cassava, yet commercial tree crops such as cocoa and oil palm fail to yield sustained economic output in these areas. Which climatic factor is primarily responsible for limiting the commercial cultivation of tree crops in this zone?

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Cevap: An extended dry period accompanied by insufficient total annual moisture relative to the southern rainforest belt.

Cevap

An extended dry period accompanied by insufficient total annual moisture relative to the southern rainforest belt.
Perennial tree cash crops such as cocoa, oil palm, and rubber require humid tropical forest conditions with high annual rainfall evenly distributed throughout the year. The Middle Belt lies within the Guinea savanna zone, where a marked dry season of several months creates a moisture deficiency that tree crops cannot survive commercially. Consequently, the region specializes in tuber and grain crops suited to seasonal rainfall.

Adım Adım Çözüm

1
Identify the ecological requirements of commercial tree crops.
Tree crops such as cocoa, oil palm, and rubber require high annual rainfall (over 1,500 mm to 2,000 mm) and consistently high humidity with a minimal dry season.
Perennial tree crops require sustained soil moisture to survive and produce commercial yields year-round.
2
Analyze the climatic characteristics of the Middle Belt (Southern Guinea Savanna).
The Middle Belt receives lower annual rainfall (1,000 mm – 1,500 mm) and experiences a distinct dry season lasting 4 to 5 months due to the influence of the Tropical Continental air mass.
This climatic envelope supports annual and root crops (yam, cassava, sorghum) that tolerate seasonal drought, but restricts perennial rainforest tree crops.
3
Evaluate the options to select the primary limiting factor.
The option citing an extended dry period and insufficient total annual moisture accurately explains the spatial limit of tree crops in Nigeria.
Climatic moisture deficit is the main factor preventing rainforest tree crop cultivation in savanna zones.

Anahtar Kavram

Climatic Controls on Crop Belts in Nigeria
Tahmini Süre:1m 0s
Soru 112Soru →

In the semi-arid northern boundary zone of Nigeria encompassing Sokoto and Katsina states, agricultural land faces severe degradation driven primarily by wind erosion and topsoil desiccation. Considering the pedological profile and environmental conditions of this region, which option correctly pairs the prevailing soil characteristics with the most effective soil conservation strategy?

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Cevap: Coarse, weakly structured sandy soils with low organic humus and minimal water-retention capacity; managed by establishing multi-row shelterbelts of drought-tolerant trees perpendicular to prevailing winds.

Cevap

Coarse, weakly structured sandy soils with low organic humus and minimal water-retention capacity; managed by establishing multi-row shelterbelts of drought-tolerant trees perpendicular to prevailing winds.
The northern extremity of Nigeria features semi-arid conditions where wind erosion dominates. The soil is predominantly coarse, sandy Regosol with low moisture retention. Establishing shelterbelts creates windbreaks that effectively halt topsoil loss and preserve land productivity.

Adım Adım Çözüm

1
Identify the geographical region and its associated soil zone
Sokoto and Katsina fall in the northernmost Sahel/Sudan savanna belt of Nigeria, dominated by Regosols and Brown soils.
Zonal soil distribution in Nigeria follows latitudinal climate belts from south to north.
2
Analyze the physical properties of soils in northern Nigeria
Regosols are coarse-textured, highly permeable, sandy, and low in organic content.
Low rainfall and sparse vegetation limit organic matter accumulation and soil horizon development.
3
Determine the principal degradation mechanism and targeted conservation response
Strong dry season winds (Harmattan) cause wind erosion and topsoil desiccation, best mitigated by shelterbelts and afforestation.
Tree barriers break wind speed, trap soil particles, and reduce evaporation.

Anahtar Kavram

Zonal distribution of Nigerian Regosols and wind erosion conservation techniques
Tahmini Süre:2m 0s
Soru 113Soru →

Match each physical region of Nigeria listed on the left with its correct relief and drainage characteristic on the right.

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Öğeler

Eastern Scarplands
Benue Trough
High Plains of Hausaland
Oban Hills

Eşleşmeler

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Cevap

Eastern Scarplands matches the asymmetrical cuesta topography; Benue Trough matches the linear sedimentary structural rift valley; High Plains of Hausaland matches the broad crystalline basement plain with inselbergs; Oban Hills matches the rugged crystalline basement complex massif in southeastern Nigeria.
Each physical region of Nigeria is correctly paired based on its distinctive geological foundation, relief forms, and hydrographic function: the Eastern Scarplands exhibit cuesta landforms that divide river basins; the Benue Trough is a sedimentary rift valley with broad alluvial floodplains; the High Plains of Hausaland form an extensive basement plateau with inselbergs serving as a northern watershed; and the Oban Hills represent a dissected crystalline highland in the southeast.

Adım Adım Çözüm

1
Analyze the structural and topographical features of the Eastern Scarplands.
Identify that the region is defined by cuesta landforms forming a drainage divide between the Anambra and Cross River basins.
Cuesta topography with dip and scarp slopes is characteristic of the sedimentary scarplands around Enugu and Nsukka.
2
Examine the formation and drainage layout of the Benue Trough.
Identify it as a sedimentary rift valley containing wide floodplains fed by several large tributaries.
The trough is a long structural depression that formed during Cretaceous rifting.
3
Evaluate the relief characteristics of the High Plains of Hausaland.
Recognize the extensive basement plain studded with inselbergs that acts as a major northern watershed.
This region covers much of northern interior Nigeria on ancient crystalline basement rocks.
4
Identify the geographical setting of the Oban Hills.
Associate it with the crystalline basement highland in southeastern Nigeria drained into the Cross River and Atlantic coast.
The Oban Hills form part of the southeastern highland block near the Cameroon border.

Anahtar Kavram

Geomorphology and Hydrography of Physical Regions in Nigeria
Soru 114Soru →

Match each Nigerian mineral resource or energy generation plant on the left with its principal deposit location or host site on the right.

Soldaki öğeye tıklayın, sonra eşleşen sağdaki öğeye tıklayın

Öğeler

Barite (industrial vein deposits used in drilling mud)
Lignite (Tertiary brown coal deposits)
Jakura Marble (metamorphic crystalline carbonate)
Egbin Thermal Power Station (gas-fired facility)

Eşleşmeler

Cevabı ve açıklamayı göster

Cevap

Barite matches with Azara (Nasarawa State); Lignite matches with Ogwashi-Uku (Delta State); Jakura Marble matches with Lokoja axis (Kogi State); and Egbin Thermal Power Station matches with Ikorodu axis (Lagos State).
Each resource or infrastructure item correctly pairs with its specific geographic site in Nigeria: Barite is mined at Azara (Nasarawa State); Lignite is concentrated at Ogwashi-Uku (Delta State); Jakura Marble occurs near Lokoja (Kogi State); and Egbin Thermal Power Station operates at Ikorodu (Lagos State).

Adım Adım Çözüm

1
Identify the primary mining location for vein barite deposits in Nigeria.
Barite, vital as a weighting agent in petroleum drilling mud, is mainly mined from vein deposits located at Azara in Nasarawa State.
Hydrothermal mineralization in the Benue Trough concentrates industrial barite veins in Nasarawa State.
2
Locate the major Tertiary lignite (brown coal) seam formations in southern Nigeria.
Lignite deposits belong to the Ogwashi-Asaba geological formation, prominently exposed around Ogwashi-Uku in Delta State.
Unlike the Cretaceous sub-bituminous coal of Enugu, lignite is a younger Tertiary fuel found along the lower Niger sedimentary basin.
3
Determine the geographical location of the Jakura marble deposit.
Jakura marble occurs within the Precambrian Basement Complex rocks in Kogi State near Lokoja.
Metamorphic re-crystallization of ancient limestones created high-grade marble in the Lokoja district.
4
Identify the host location of the Egbin thermal power installation.
Egbin Thermal Power Station is situated along the lagoon at Egbin near Ikorodu, Lagos State.
It relies on natural gas piped from the Niger Delta oil fields to power steam turbines generating electricity for the national grid.

Anahtar Kavram

Spatial distribution of non-metallic minerals, solid fossil fuels, and major thermal power plants in Nigeria
Soru 115Soru →

In the industrial geography of Nigeria, leather product manufacturing relies on an inter-regional value chain connecting pastoral livestock regions to light assembly clusters. Arrange the following sequential stages of this manufacturing process in order from raw material harvesting to final finished product distribution.

Öğeleri doğru sıraya koymak için sürükleyin

Cevabı ve açıklamayı göster

Cevap

The correct sequence starts with hide flaying in Sokoto/Maiduguri, followed by tanning in Kano, southward haulage along transit corridors, and final footwear assembly in Aba and Lagos.
The manufacturing process follows a logical spatial and industrial sequence: raw animal hides are first collected in northern pastoral belts (Sokoto/Maiduguri), then processed into leather at raw-material-oriented tanneries in Kano. The tanned leather is subsequently transported south along main freight corridors to market-oriented assembly hubs like Aba and Lagos, where skilled labor transforms the leather into finished commercial footwear and accessories.

Adım Adım Çözüm

1
Identify the raw material extraction point in the geographical value chain.
Primary raw hides originate from livestock pastoralism in northern states like Sokoto and Borno.
Manufacturing value chains always begin with primary commodity collection before industrial processing.
2
Determine the primary industrial processing location based on raw material proximity.
Tanning factories convert perishable hides into durable leather sheets in Kano.
Tanneries are weight-losing and perishable-input industries, making them raw-material-oriented and situated close to livestock hubs.
3
Trace the spatial movement of intermediate industrial inputs across geographical regions.
Tanned leather is hauled southward via highway and railway transport infrastructure.
Intermediate goods must bridge the geographical gap between northern raw material sources and southern consumer demand centers.
4
Locate the secondary manufacturing stage producing consumer-ready goods.
Finished footwear and leather goods are fabricated in commercial clusters like Aba and Lagos.
Footwear assembly is market-oriented and labor-intensive, taking advantage of large urban consumer markets and skilled labor pools in southern cities.

Anahtar Kavram

Inter-Regional Industrial Value Chain and Location Factors in Nigeria
Tahmini Süre:2m 0s
Soru 116Soru →

While primary petrochemical refining and resin synthesis in Nigeria are located near coastal oilfields in the Niger Delta (such as at Port Harcourt and Warri), secondary plastic and synthetic consumer goods manufacturing is heavily concentrated in the Lagos–Ota industrial zone. Which geographical factor primarily accounts for this spatial distribution of secondary polymer manufacturing?

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Cevap: Proximity to Nigeria's largest urban market threshold, dense commercial distribution channels, and major seaport access for chemical additives

Cevap

Proximity to Nigeria's largest urban market threshold, dense commercial distribution channels, and major seaport access for chemical additives
Secondary manufacturing of plastic goods uses compact, high-density polymer resins to produce light, bulky, and space-consuming finished products. Following transport cost minimization principles, it is cheaper to ship resin pellets from refineries to market hubs than to ship fragile or bulky finished products over long distances. Consequently, the Lagos–Ota industrial corridor—representing Nigeria's largest urban consumer market, financial hub, and seaport entry point for imported industrial additives—is the ideal market-oriented location.

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1
Analyze the nature of the industry and raw material characteristics
Secondary plastic manufacturing converts compact, easily transportable polymer pellets/resins into bulky, fragile, or high-volume finished consumer goods (containers, household items, packaging).
Determining whether an industry is raw-material-oriented or market-oriented requires evaluating weight-loss versus weight-gain/bulkiness during production.
2
Evaluate transport economics under industrial location principles
Shipping finished bulky plastic products over long distances from the Niger Delta would incur high freight costs per unit value. Transporting compact raw resin to market hubs is vastly cheaper.
Weber's location model dictates that market proximity is optimal when final products are bulkier or more expensive to transport than raw materials.
3
Identify spatial infrastructure and market agglomeration factors in Nigeria
The Lagos–Ota axis provides the highest population density, financial services, port facilities for imported colorants/additives, and wholesale market networks in West Africa.
Agglomeration economies and market accessibility drive industrial location for secondary manufacturing in Nigeria.

Anahtar Kavram

Market-oriented industrial location factors in Nigeria's secondary manufacturing sector
Soru 117Soru →

Arrange the following sequential stages involved in the agro-allied manufacturing of cocoa products in Southwestern Nigeria, from raw agricultural harvesting to the final industrial extraction stage.

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Cevap

The correct order of cocoa processing stages is: (1) Harvesting mature cocoa pods and fermenting/drying beans on rural farm settlements, (2) Transporting dried cocoa beans from rural farming hinterlands to urban agro-processing factories, (3) Cleaning, roasting, and winnowing the cocoa beans to remove husks and isolate cocoa nibs, and (4) Grinding cocoa nibs into liquor and pressing to extract cocoa butter and cocoa cake.
The correct sequence traces cocoa processing from farm harvesting and solar drying, followed by transport from agricultural zones to industrial centers (e.g., Ede, Ondo, Ikeja). Factory processing then cleans, roasts, and winnows the beans to remove outer husks, before grinding and hydraulic pressing produce final cocoa butter and powder.

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1
Identify the primary farm-level production step.
Harvesting mature cocoa pods and fermenting/drying beans on rural farm settlements comes first.
Agro-industrial processing begins with harvesting, fermentation, and initial drying on farms.
2
Identify the transport stage from agricultural areas to manufacturing centers.
Transporting dried cocoa beans from rural farming hinterlands to urban agro-processing factories comes second.
Dried agricultural produce must be moved to industrial locations in urban centers.
3
Identify the preliminary mechanical processing stage at the plant.
Cleaning, roasting, and winnowing the cocoa beans to remove husks and isolate cocoa nibs comes third.
Factory processing begins by cleaning, roasting, and removing outer husks from the raw beans.
4
Identify the final extraction and refining manufacturing phase.
Grinding cocoa nibs into liquor and pressing to extract cocoa butter and cocoa cake comes fourth.
Fine milling and hydraulic pressing represent the final phase of turning nibs into industrial cocoa butter and powder.

Anahtar Kavram

Agro-allied industrial processing stages and raw-material movement in Nigerian manufacturing.
Soru 118Soru →

The wood processing and plywood manufacturing industry in Sapele, Delta State, is a classic example of industrial siting in Nigeria. Which primary factor determined the location of this industry?

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Cevap: Abundant supply of heavy hardwood timber from nearby rainforests

Cevap

The primary factor determining the siting of the plywood manufacturing industry in Sapele is the abundant supply of heavy hardwood timber from the surrounding rainforests.
The correct answer highlights proximity to raw timber. Timber processing and plywood manufacturing are weight-losing industries. Because logs are bulky and heavy, processing facilities locate close to the rainforests of southern Nigeria (such as Sapele) to minimize high bulk-transport costs.

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1
Identify the nature of the industry and its primary raw materials.
Plywood and sawmill manufacturing requires heavy, bulky logs of hardwood timber.
Wood processing is a weight-losing manufacturing process.
2
Apply industrial location principles to weight-losing raw materials.
Industries using heavy weight-losing raw materials locate near the raw material source to cut transportation costs.
Transporting raw logs over long distances is significantly more expensive than transporting processed plywood.
3
Relate the geographic region of Sapele to Nigeria's vegetation and raw material distribution.
Sapele is located in the dense rainforest belt of southern Nigeria, rich in hardwood species like Mahogany and Iroko.
This spatial alignment establishes raw material proximity as the key location factor.

Anahtar Kavram

Raw material orientation in industrial location (Weight-losing industries)
Tahmini Süre:45s
Soru 119Soru →

Commercial cocoa production in Nigeria is heavily concentrated in southwestern states such as Ondo, Osun, and Oyo, but is virtually absent in northern states like Kano and Sokoto. Which of the following environmental factors is the primary reason for this spatial limitation?

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Cevap: The high mean annual rainfall exceeding 1,500 mm and sustained high relative humidity required by cocoa trees are restricted to the southern rainforest belt.

Cevap

Cocoa cultivation requires high mean annual rainfall (1,500–2,000 mm) and high relative humidity, environmental conditions characteristic of the humid tropical forest zone of southwestern Nigeria but lacking in the semi-arid northern savanna.
Cocoa is a humid tropical tree crop whose growth demands high annual rainfall (exceeding 1,500 mm) and elevated relative humidity. Southwestern states (Ondo, Osun, Oyo) lie within Nigeria's tropical rainforest belt where these moisture conditions prevail, whereas northern states (Kano, Sokoto) lie in semi-arid savanna zones with long dry seasons.

Adım Adım Çözüm

1
Identify the crop and its ecological requirements
Cocoa (Theobroma cacao) is a tropical tree cash crop requiring warm temperatures, high annual rainfall (>1,500 mm>1,500\text{ mm}), and high relative humidity.
Perennial tree crops of tropical origin cannot withstand prolonged severe moisture deficits or low atmospheric humidity.
2
Analyze the spatial climate gradient of Nigeria
Rainfall and relative humidity decrease along a south-to-north latitudinal gradient across Nigeria, moving from the rainforest belt in the south to the Sudan/Sahel savanna in the north.
The influence of the Tropical Maritime (mT) air mass weakens northwards, resulting in shorter rainy seasons and lower total precipitation in the north.
3
Evaluate the environmental constraint limiting northern cultivation
The long dry season (5–8 months) and low rainfall (<1,000 mm<1,000\text{ mm}) in northern states like Kano fail to satisfy cocoa moisture requirements.
Moisture availability during the growing season is the primary environmental determinant separating southern tree crop belts from northern grain/livestock belts.

Anahtar Kavram

Ecological Adaptation and Spatial Zonation of Nigerian Crops
Tahmini Süre:1m 0s
Soru 120Soru →

Settlements established along the river channels and main creeks of the Niger Delta in southern Nigeria typically exhibit an elongated, ribbon-like spatial arrangement. Which of the following geographic factors primarily accounts for this settlement pattern?

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Cevap: The availability of dry, elevated natural levees along water channels providing suitable building sites and river transport access

Cevap

The availability of dry, elevated natural levees along water channels providing suitable building sites and river transport access
Linear settlements form along river channels in the Niger Delta because natural levees provide the only elevated, dry land suitable for building, while simultaneously giving inhabitants direct access to water transportation and fishing.

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1
Identify the settlement pattern described in the stem.
An elongated, ribbon-like spatial arrangement along water bodies corresponds to a linear settlement pattern.
Linear settlements develop along line features such as roads, railways, river banks, and coastal levees.
2
Analyze the environmental and socio-economic conditions of the Niger Delta.
The region consists largely of seasonally flooded wetlands, mangrove swamps, and river networks.
Dry land suitable for habitation is scarce and predominantly restricted to natural embankments (levees) formed along river channels.
3
Match the environmental constraint to the primary physical factor.
Natural levees provide dry ground elevated above floodwaters and offer direct access to riverine transportation.
This physical geographic constraint forces dwellings to line up continuously along the riverbank.

Anahtar Kavram

Linear Rural Settlement Morphology and Physical Factors in Nigeria
Tahmini Süre:1m 0s
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Regional Geography of Nigeria Alıştırma Soruları — JAMB UTME — Sayfa 6 | Examkin