All practice questions

As moist air masses ascend the windward slopes of a major mountain barrier, they cool adiabatically and deposit heavy precipitation. As the air descends on the opposite side, it warms adiabatically and absorbs moisture, resulting in arid or semi-arid conditions. Which climatic control and associated phenomenon are responsible for the dry climate on the leeward side?

The table below presents crude birth rates (CBR) and crude death rates (CDR) per $1,000$ population for four administrative divisions in a West African country:

Based on the data provided, which division exhibits the highest annual Rate of Natural Increase (RNI)?

In major low-lying coastal urban zones of southern Nigeria, intense groundwater abstraction combined with frequent ocean storm surges frequently leads to severe subsurface degradation. Which environmental hazard is directly caused by this combination of human action and marine influence?

In parts of Nigeria with rugged topography, such as the Mandara Mountains and the edges of the Jos Plateau, local farmers construct stone terraces along hill slopes. What is the primary geographical reason for adopting this agricultural practice?

At a meteorological station in Jos, Nigeria, a weather observer records a maximum daily air temperature of $28.5^\circ\text{C}$ and a minimum daily air temperature of $17.5^\circ\text{C}$ using a Six's maximum and minimum thermometer. What is the mean daily temperature in $^\circ\text{C}$?

If $(x, y)$ is a pair of positive integers satisfying the simultaneous equations $x + 2y = 7$ and $x^2 + y^2 = 13$, what is the value of $2x - y$?

Along a steep rocky headland, storm waves repeatedly force air under extreme pressure into narrow joints and bedding planes at the back of a sea cave. As waves surge into the cave, the rapid trapped air compression followed by explosive expansion causes vertical disintegration of the roof until an opening reaches the cliff top surface above. Which of the following coastal landforms is formed by this specific process?

Match each Köppen climate classification symbol on the left with its primary controlling atmospheric mechanism and seasonal characteristics on the right.

A candidate takes a two-stage driving examination consisting of a theoretical test followed by a practical test. The probability that the candidate passes the theoretical test is $0.75$. If the candidate passes the theoretical test, the probability of passing the practical test is $0.80$. However, if the candidate fails the theoretical test, the probability of passing the practical test is $0.20$. What is the probability that the candidate passes exactly one of the two tests?

A constant-volume gas thermometer registers a pressure of $60\,\text{kPa}$ at the ice point ($0^\circ\text{C}$) and $84\,\text{kPa}$ at the steam point ($100^\circ\text{C}$). What is the temperature in degrees Celsius when the pressure registered by the thermometer is $72\,\text{kPa}$?

In a humid tropical environment, acidic groundwater reacts with orthoclase feldspar present in granite bedrock. Through a reaction where hydroxyl ($OH^-$) and hydrogen ($H^+$) ions replace potassium cations, the hard rock is decomposed in-situ into soft kaolin clay. Which chemical weathering process does this transformation describe?

An environmental management team in Nigeria is configuring a Geographic Information System (GIS) to analyze continuous geographical phenomena across a river basin, such as elevation gradients and soil moisture distribution. Which of the following GIS data models is most suitable for accurately representing these continuous spatial phenomena?

Match each weather measuring instrument on the left with its specific operational mechanism or structural feature on the right.

Below is a list of specific rock specimens alongside various geological formation mechanisms and economic applications. Match each rock specimen to its corresponding origin process and primary practical utilization.

During an field investigation of coastal landforms along a rocky cliff line, geographers observed narrow, steep-sided sea inlets created where marine wave action enlarged weak structural joints and faults, eventually causing the collapse of sea cave roofs. Which coastal landform is produced by this process?

In $\triangle ABC$, side $b = 10\text{ cm}$, side $c = 6\text{ cm}$, and $\angle A = 120^\circ$. What is the length of side $a$ in centimeters?

A binary operation $\ast$ is defined on the set of real numbers $\mathbb{R}$ by $a \ast b = a + b - 4$. If $x^{-1}$ represents the inverse of an element $x$ under the operation $\ast$, what is the value of $x$ such that $x \ast 3 = 10^{-1}$?

A hydrologist analyzing satellite imagery of Nigeria observes a drainage network where short tributary streams flow down parallel ridges and join the main stream almost at right angles, controlled by alternating bands of hard and soft folded sedimentary rocks. In which of the following physical regions of Nigeria is this trellis drainage pattern most prominently developed?

Match each African transport and trade corridor listed on the left with the landlocked state dependency and coastal port gateway it serves on the right.

Agricultural production systems in Nigeria exhibit a strong spatial distribution governed by the south-to-north latitudinal rainfall gradient. Arrange the following crop and agricultural production belts in order from the far South (highest annual rainfall) to the far North (lowest annual rainfall):