All practice questions

Match each African agricultural system or development scheme listed on the left with its defining environmental adaptation, operational feature, or policy mechanism on the right.

A mining concession covers an area of $40\text{ cm}^2$ on a topographical map drawn to a scale of $1 : 50,000$. If this map is reduced to a scale of $1 : 200,000$, what is the area of the concession on the reduced map in $\text{cm}^2$?

A voltmeter records a potential difference of $12.6\text{ V}$ across a resistor. If the percentage error in this measurement is $5.0\%$, what is the absolute error in the reading?

Match each Nigerian transportation node or corridor with its primary geographic characteristic or operational commercial role.

Match each geographical region of Nigeria listed on the left with its predominant settlement pattern and primary geographical driver on the right.

Following persistent seasonal droughts in the Sahelian zone, pastoral nomadic communities frequently move southwards into the humid Guinea savanna belt during the dry season. Which of the following is the most direct consequence of this seasonal migration stream on the host destination area?

During the late 1970s, the Nigerian government established inland steel rolling mills at Oshogbo, Jos, and Katsina as part of a regional industrial decentralization policy. However, these facilities faced high operational costs and underutilization. Based on industrial location theory, which factor represents the main structural geographical flaw in the siting of these inland rolling mills?

A wildlife sanctuary covers an area of $24\text{ cm}^2$ on Map P, which is drawn to a scale of $1 : 60,000$. If Map P is enlarged to produce Map Q with a scale of $1 : 20,000$, what is the area of the sanctuary on Map Q in $\text{cm}^2$?

In transport geography, the spatial development of transport networks in developing regions typically follows a sequential evolutionary model (such as the Taaffe, Morrill, and Gould model). Arrange the following stages of transport network expansion in chronological order, from the initial phase to the most advanced integrated phase.

In a municipality located in West Africa with an estimated mid-year population of $250{}000$, a demographic survey recorded $6{}250$ live births and $2{}500$ deaths within a single year. What is the Rate of Natural Increase (RNI) of this population expressed as a percentage?

During an environmental audit of forestry practices in the equatorial rainforests of the Congo Basin, analysts observe that logging operations exclusively extract indigenous species such as Mahogany, Sapele, and Iroko, while ignoring softwood species like pine and fir. What fundamental botanical distinction and geographical reality explain this selective harvesting pattern?

During the initial phase of soil formation, solid rock undergoes physical disintegration and chemical decomposition without being transported from its original location. Which process specifically describes this in-situ breakdown of parent rock material?

In West Africa, commercial oil palm cultivation is predominantly concentrated in the southern humid forest zone rather than the northern savanna belt primarily because oil palm requires which of the following environmental conditions?

Despite the extensive coverage of the Niger-Benue river system through major commercial zones in Nigeria, inland water transport accounts for a minimal share of long-distance agricultural export freight compared to rail and road networks. Which of the following physical and operational factors primarily limits the year-round navigability and commercial viability of the Niger-Benue waterways?

Two meteorological stations located at similar latitudes of approximately $55^\circ\text{N}$ display contrasting thermal characteristics throughout the year. Station X, situated on a western continental coast, records mild winters ($3^\circ\text{C}$ average in January), cool summers ($16^\circ\text{C}$ average in July), and an annual temperature range of $13^\circ\text{C}$. Station Y, situated deep within the continental interior at the same latitude, records severe winters ($-22^\circ\text{C}$ average in January), warm summers ($18^\circ\text{C}$ average in July), and an annual temperature range of $40^\circ\text{C}$. Which climatic control is primarily responsible for the contrasting annual temperature ranges observed between these two stations?

Arrange the following sequential steps involved in conducting a chain survey fieldwork operation in the correct chronological order from start to finish.

In a demographic study of an agricultural region in West Africa covering a total surface area of $150{}000\text{ km}^2$ ($20\%$ of which consists of non-arable mountainous terrain and water bodies), the population at the beginning of a 10-year census period was $9{}000{}000$. Over the 10-year period, official demographic records indicate $2{}700{}000$ live births, $1{}050{}000$ deaths, $600{}000$ inbound immigrants, and $150{}000$ outbound emigrants. What is the physiological population density of the region in persons per square kilometer of arable land at the end of the 10-year period?

In a seasonally inundated river basin, rural homesteads are established in an elongated single row along the crest of a natural levee to remain safe from rising floodwaters while cultivating the adjacent fertile soils. Which rural settlement pattern and site determinant are illustrated by this spatial arrangement?

The Kano Close-Settled Zone in northern Nigeria maintains one of the highest rural population densities in West Africa despite receiving lower annual rainfall than the southern forest belt. Which factor primarily accounts for the historical development and sustainability of this high population density?

Match each African geographical region listed on the left with its corresponding population density characteristic and primary environmental driver on the right.