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Ibeere 1 Ìròyìn
Which of the following regions in Nigeria has an average height of over 100 metres above sea level?
Awọn alaye Idahun
The Biu Plateau has an average height of over 100 meters above sea level. The Biu Plateau is a region of high ground in northeastern Nigeria
Ibeere 2 Ìròyìn
Nigeria is located between longitude
Awọn alaye Idahun
Nigeria, a country located in West Africa, is situated between the longitudes of 3°E and 15°E. Longitude lines are imaginary vertical lines that run across the Earth's surface from the North Pole to the South Pole. These lines help in determining the east-west position of a particular location on earth. By being positioned between 3°E and 15°E, Nigeria stretches from slightly east of the Prime Meridian, which is 0°, to 15° eastward. This geographical positioning affects several aspects like climate and time zone, making it an important detail in understanding the country's location globally.
Ibeere 3 Ìròyìn
All the following are advantages of the bush fallowing system in West Africa except that it
Awọn alaye Idahun
The bush fallowing system in West Africa is not very economical in the use of land. Bush fallowing involves leaving land fallow for several years to regain its fertility, which can lead to inefficient use of land.
Ibeere 4 Ìròyìn
A conurbation can best be described as
Awọn alaye Idahun
A conurbation is a term used to describe a group of cities, towns, or urban areas that have merged together to form a single urban entity, while still retaining their individual identities.
Ibeere 5 Ìròyìn
The major problem facing the utilization of human resources in West Africa is
Awọn alaye Idahun
One of the major problems impacting the effective utilization of human resources in West Africa is unemployment.
Unemployment is a significant issue because it leads to several challenges that adversely affect both individuals and the economy at large. When people, especially those who are capable and willing to work, do not have jobs, it results in a waste of potential human resources. Let's break down a few reasons why unemployment is such a pressing problem:
Addressing unemployment requires collaborative efforts involving government policies, education systems, and private sector initiatives to create more job opportunities and develop skills that match the demands of the labor market. Therefore, unemployment remains a critical concern in achieving optimal utilization of human resources in West Africa.
Ibeere 6 Ìròyìn
Which of the following settlement type is the largest?
Awọn alaye Idahun
In the context of settlement types and their sizes, the largest is a megalopolis.
Let me explain this in simple terms:
In summary, of all the settlement types listed, a megalopolis is the largest as it comprises multiple, even significant urban areas that have expanded to form a vast, continuous area.
Ibeere 7 Ìròyìn
One characteristic that distinguishes urban settlements from rural settlements is that
Awọn alaye Idahun
One characteristic that distinguishes urban settlements from rural settlements is that urban settlements are areas of secondary and tertiary activities.
Let's break this down:
To summarize, the primary distinction is that urban settlements focus on secondary and tertiary activities, providing goods and services, ultimately making them different in function and character from rural settlements, which focus more on primary activities.
Ibeere 8 Ìròyìn
Which of the following countries is located within the Horn of Africa?
Awọn alaye Idahun
The **Horn of Africa** is a prominent peninsula in East Africa that juts into the Arabian Sea. It consists primarily of four countries: **Ethiopia**, **Eritrea**, **Somalia**, and **Djibouti**. From the options provided, only **Djibouti** is located within the Horn of Africa. This makes Djibouti geographically significant in terms of its positioning in this specific region.
For further understanding, here is a brief description of the other countries mentioned:
Ibeere 9 Ìròyìn
Which of the following is a fossil fuel?
Awọn alaye Idahun
The term fossil fuel refers to energy sources that come from the remains of ancient plants and animals, buried and subjected to heat and pressure over millions of years. These fuels are primarily composed of carbon and include materials like coal, oil, and natural gas.
Among the options given:
Therefore, the correct answer is Lignite because it belongs to the category of fossil fuels. Lignite is formed from the remains of plants that lived millions of years ago, which makes it a source of stored energy that can be burned for heat and power.
Ibeere 10 Ìròyìn
The outer layer of the earth is called the
Awọn alaye Idahun
The outer layer of the Earth is called the crust. Let's understand this in simple terms:
The Earth is made up of several layers. Imagine the Earth like an onion with different layers, with each layer varying in composition and physical properties. The outermost of these layers is the crust.
The crust is similar to a thin shell around the Earth. It is very thin compared to the other layers and can be thought of as the Earth's skin. It is made up of solid rocks and minerals and is where we live and see landscapes, mountains, and oceans.
Below the crust is the mantle, which is much thicker and composed primarily of semi-solid rock. Therefore, when talking about the outermost layer, we refer specifically to the Earth's crust.
Ibeere 11 Ìròyìn
Mountains formed as a result of compressional forces in the earth's crust are
Awọn alaye Idahun
The mountains formed as a result of compressional forces in the Earth's crust are known as fold mountains. Fold mountains are created when two tectonic plates collide, and the compressional forces involved cause the layers of the Earth's crust to crumple and fold.
Imagine it like pushing two pieces of paper together from opposite ends; they begin to crumple and form folds. Similarly, when large sections of the Earth's crust are subjected to immense pressures from the sides, they buckle and bend into wave-like structures called folds. These folds then rise over time to form fold mountains.
Some of the most well-known mountain ranges in the world, like the Himalayas, the Alps, and the Rockies, are examples of fold mountains.
In summary, fold mountains are formed by the compression and folding of the Earth's crust, making them a direct result of tectonic forces that push the land upwards to form mountains.
Ibeere 12 Ìròyìn
The major source of power for most terrestrial ecosystems is
Awọn alaye Idahun
The major source of power for most terrestrial ecosystems is solar energy.
Let me explain why:
Solar energy is the energy that comes from the sun. It is critical for life on Earth as it powers the process of photosynthesis, which is used by plants, algae, and some bacteria to convert light energy into chemical energy. During photosynthesis, these organisms take in carbon dioxide from the air and water from the soil, and with the help of sunlight, they produce glucose and oxygen. This process provides the necessary energy and organic material to support life.
Here is why it is important:
In comparison, other energy sources like geothermal energy, nuclear power, and hydroelectric power play relatively minor roles in terrestrial ecosystems. These energies are not as directly involved in powering the basic life-sustaining processes as solar energy is. Therefore, it is clear that solar energy is the predominant power source for life on land.
Ibeere 13 Ìròyìn
The location of iron and steel industry at Ajakuta in Nigeria is best explained by the presence of (1) iron ore at Itakpe (11) limestone at Ewekoro (III) river port at Lokoja (IV) coal at Orukpa and Okaba
Awọn alaye Idahun
The location of the iron and steel industry at Ajaokuta in Nigeria can be best explained by considering certain factors critical to the iron and steel production process. These factors include **availability of raw materials**, **efficient transportation networks**, and **proximity to fuel sources**.
Firstly, the presence of **iron ore at Itakpe** is crucial because iron ore is the primary raw material needed for steel production. The proximity of Itakpe's iron ore deposits to Ajaokuta reduces transportation costs and ensures a steady supply of the primary raw material, enhancing the industry's efficiency. Therefore, **availability of iron ore is a significant consideration**.
Secondly, **limestone at Ewekoro** is essential because limestone is a critical component used in removing impurities during the steelmaking process, particularly in the blast furnace. Limestone acts as a flux which combines with impurities and forms slag that can be easily removed. **Proximity to limestone sources ensures access to necessary materials for processing**, which is a factor in choosing the location of the industry.
The presence of a **river port at Lokoja** facilitates the transportation of raw materials and finished products, as waterways provide a cost-effective and efficient means of transportation. This is important for both importing required materials and exporting the finished steel products.
Additionally, **coal at Orukpa and Okaba** is important as coal is often used to generate the high temperatures needed in steel production, either directly or through the production of coke, a coal derivative used in blast furnaces.
In conclusion, the location of the iron and steel industry at Ajaokuta is best explained by the presence of:
Therefore, the most relevant factors are the **availability of iron ore and limestone**, making the best answer "I and II only".
Ibeere 14 Ìròyìn
Awọn alaye Idahun
Life expectancy refers to the average age at which people die. It is a statistical measure that estimates the average number of years a person is expected to live based on current mortality rates. Life expectancy can vary significantly based on various factors such as geography, lifestyle, healthcare quality, and socioeconomic status. It serves as an important indicator of a population's overall health and quality of life.
Ibeere 15 Ìròyìn
Which of the following dams in Africa provides both irrigation water and hydro-electricity?
Awọn alaye Idahun
The Akosombo Dam in Ghana provides both irrigation water and hydro-electricity. The dam was built on the Volta River and provides hydro-electric power and irrigation water for agriculture.
Ibeere 16 Ìròyìn
When wet and dry bulb thermometers record the same temperature, it means
Awọn alaye Idahun
When wet and dry bulb thermometers, which together form a psychrometer, record the same temperature, it indicates that the air is saturated. This means that the air has reached its maximum capacity to hold water vapor, also known as reaching the dew point.
Normally, the wet bulb thermometer, which has a cloth soaked in water wrapped around it, shows a lower temperature than the dry bulb thermometer because evaporation cools it down. However, when the temperatures are the same for both thermometers, no evaporation is taking place. This is because the air cannot accept more water vapor, pointing to a humidity level of 100%, which is known as saturation.
Ibeere 17 Ìròyìn
The ocean that connects Europe and America is the
Awọn alaye Idahun
The ocean that connects Europe and America is the Atlantic Ocean.
Here's a simple explanation: The Atlantic Ocean is a massive body of water that lies between the continents of Europe and Africa to the east and the Americas to the west. This ocean is one of the world's five major oceans and is the second largest after the Pacific Ocean. Historically, the Atlantic Ocean has been significantly important as a route for ships traveling between Europe and the Americas, playing a crucial role in exploration, commerce, and cultural exchanges.
Ibeere 18 Ìròyìn
Which of the following climatic types is found on the western margins of continents between altitude 300 and 400 North and South of the Equator?
Awọn alaye Idahun
The climatic type found on the western margins of continents between latitudes 30° and 40° North and South of the Equator is the Mediterranean climate.
The Mediterranean climate is characterized by its unique seasonal weather pattern:
This type of climate is well-known for supporting specific kinds of ecosystems and is suitable for growing certain crops, such as olives, grapes, and wheat. Typical regions with a Mediterranean climate include the coastal areas of the Mediterranean Sea, parts of California in the United States, central Chile, the southern tip of South Africa, and southwestern Australia.
Ibeere 19 Ìròyìn
They are formed in layers and derived from old rocks and the remains of dead organic materials. This description refers
Awọn alaye Idahun
The description in question refers to sedimentary rocks. These types of rocks are primarily formed through the accumulation of material, which can be particles derived from other rocks or the remains of dead plants and animals. Here is a simple breakdown:
Sedimentary rocks play a crucial role in our understanding of Earth's history. The layers can tell scientists a lot about the Earth's past environments, climate, and even the organisms that lived long ago.
Ibeere 20 Ìròyìn
The equatorial diameter of the earth is approximately
Awọn alaye Idahun
The equatorial diameter of the earth is approximately 6,760 km. This is the distance from the equator to the equator, passing through the center of the earth.
Ibeere 21 Ìròyìn
The Gezira scheme and the Manaquil Extension are famous for the cultivation of
Awọn alaye Idahun
The **Gezira Scheme** and the **Manaquil Extension** are famous for the cultivation of **cotton**. These agricultural projects are located in **Sudan** and are among the largest irrigation projects in the world dedicated to agriculture.
The Gezira Scheme utilizes the waters of the **Blue Nile** to irrigate the land, making it suitable for growing cash crops. The scheme's infrastructure, including an extensive network of canals and ditches, supports the broad-scale cultivation of cotton. Similarly, the Manaquil Extension enhanced the irrigation reach, further bolstering cotton agriculture.
**Cotton** is highly suitable for growth in the hot climate of Sudan, especially under irrigation, as it requires a long growing season with plenty of sunshine and water. This makes it an ideal crop for the region, contributing significantly to Sudan's economy through both local use and export. Additionally, cotton plays a crucial role in the livelihood of many farmers in the region, being a major source of income.
Cultivating cotton in **Gezira** and **Manaquil** not only supports the textile industry but also generates employment for thousands of people engaged in farming, processing, and trade.
Ibeere 22 Ìròyìn
If the local time at a place X is 12.00 noon when the G.M.T is 5.00a.m then X is located on longitude
Awọn alaye Idahun
To determine the longitude of place X, we need to understand the relationship between time and longitude. The Earth is divided into 360 degrees of longitude, and it completes one full rotation (360 degrees) in 24 hours. Therefore, for every hour, the Earth rotates 15 degrees of longitude.
The given information is this:
The difference in time between GMT and the local time at place X is 7 hours (from 5:00 a.m. to 12:00 noon).
Calculation:
Now, we need to determine whether place X is east or west of the Prime Meridian (0° longitude, the reference line for GMT).
- Since the local time at place X is ahead of GMT (12:00 noon compared to 5:00 a.m.), it means X is east of the Prime Meridian.
Thus, place X is located on 105°E.
Ibeere 23 Ìròyìn
All the following are problems of mining in Africa except
Awọn alaye Idahun
Mining in Africa faces several challenges, but understanding these issues helps in realizing the unique dynamics of the industry on the continent.
Inadequate Unskilled Labour: This is generally not a problem in Africa. The continent has a large population that provides sufficient unskilled labor for mining activities. Thus, an abundance of unskilled labor makes this factor not a significant issue for mining operations.
Use of Obsolete Technology: Many mining operations in Africa struggle with outdated or insufficient technology. This affects the efficiency and safety of mining activities, making it a significant challenge for the industry.
Shortage of Power: Power shortages are common in many African countries and can severely impact mining operations, which require consistent and significant energy for their activities. This is a critical challenge in mining across the continent.
Inadequate Foreign Capital: Many African nations experience difficulty in attracting sufficient foreign capital to invest in modernizing and expanding their mining sectors. This capital is crucial for technology upgrades and infrastructural development in the industry.
In summary, inadequate unskilled labour is not typically a problem for mining in Africa, whereas the other issues listed are significant challenges impacting the industry.
Ibeere 24 Ìròyìn
Sills, dykes and batholiths are examples of
Awọn alaye Idahun
Sills, dykes, and batholiths are examples of intrusive volcanic landforms. These are geological formations that are created below the Earth's surface from cooled and solidified magma.
Here's a simple explanation of each:
Sills are formed when magma intrudes between pre-existing layers of rock, creating a horizontal or near-horizontal sheet of solid rock. Over time, they cool and solidify, forming a flat or gently undulating body of igneous rock parallel to the layers it intruded.
Dykes occur when magma cuts across pre-existing rock layers, forming a vertical or steeply inclined body of rock. They act as pathways for magma movement and can be seen as wall-like structures that cut through layers of surrounding rock.
Batholiths are massive formations created when large amounts of magma slowly cool and solidify deep beneath the Earth's surface over a long period. These large rock bodies can cover thousands of square kilometers and are often exposed at the surface after extensive erosion.
All of these formations are created through the intrusion of magma into existing rock. As a result, they are classified as intrusive volcanic landforms, due to their origin beneath the Earth's surface, in contrast to extrusive volcanic landforms formed by lava cooling on the surface.
Ibeere 25 Ìròyìn
Rocks which have been formed by the cooling and solidification of molten magma are called
Awọn alaye Idahun
Rocks that are formed from the cooling and solidification of molten magma are called igneous rocks.
To put it simply, when rocks melt deep beneath the Earth's surface because of the high temperatures, they turn into a liquid called magma. This magma can sometimes rise to the surface in the form of lava. Once either the magma or lava cools down and becomes solid, it forms a new type of rock known as igneous rock.
These rocks can be formed inside the Earth when the magma cools slowly, creating large crystals, or on the Earth's surface, when the lava cools quickly, often resulting in smaller crystals. The word "igneous" comes from a Latin word meaning "fire," which appropriately describes how these rocks form from the hot, molten magma.
Ibeere 26 Ìròyìn
The development of hydro-electric power in Nigeria is least affected by the
Awọn alaye Idahun
The development of hydro-electric power in Nigeria is least affected by the availability of suitable sites for dams. While suitable sites are necessary for building dams, other factors such as a regular supply of water and high mountains are more critical for hydro-electric power development.
Ibeere 27 Ìròyìn
On June 21st, when the sun is overhead at the Tropic of Cancer,places in the Northern Hemisphere experience
Awọn alaye Idahun
On June 21st, when the sun is overhead at the Tropic of Cancer, places in the Northern Hemisphere experience a phenomenon often referred to as the **Summer Solstice**. This day marks the point when the Northern Hemisphere is tilted closest to the Sun. As a result, it receives the most direct sunlight compared to any other day of the year.
During this time, the day is significantly longer than the night. This is because the Sun travels a longer path through the sky, remaining visible for a larger portion of the 24-hour day. Therefore, areas in the Northern Hemisphere experience a **longer day and shorter night**.
This occurrence is most noticeable the further north you go, with some regions near the Arctic Circle experiencing the phenomenon known as the "Midnight Sun," where the sun is visible at midnight.
Ibeere 28 Ìròyìn
A line joining places having an equal degree of cloudiness is an
Awọn alaye Idahun
A line joining places having an equal degree of cloudiness is called an isoneph.
To understand this better, let's break down some related terms:
So, when we are specifically talking about cloudiness, the correct term and line is an isoneph. This is useful in meteorology for visualizing and analyzing patterns of cloud coverage across different regions.
Ibeere 29 Ìròyìn
Which of the following geographical regions of Nigeria covers one-fifth of the country and has a generally flat surface dotted with granitic hills? The
Awọn alaye Idahun
The geographical region of Nigeria described in the question is the North-Central Highlands. This area covers about one-fifth of the country and is characterized by a generally flat surface with granitic hills, known as inselbergs, scattered throughout the landscape. These hills are composed of hard rock formations that have resisted erosion, thereby standing out from the flatter surroundings.
This region is situated in the north-central part of Nigeria and is significant for its geological features and agricultural potential. The flat terrain provides an expansive area suitable for farming, while the inselbergs add to the region's natural beauty and sometimes serve as landmarks. The North-Central Highlands are an important and distinct geographical region within Nigeria due to these unique characteristics.
Ibeere 30 Ìròyìn
The tourist centre of Ogbunike cave is located near
Awọn alaye Idahun
The Ogbunike Cave is a popular tourist destination located **near Onitsha in Anambra State**. This cave is part of a large system of limestone caves and is known for its historical and cultural significance to the people of the region. It's situated in the southeastern part of Nigeria and is associated with numerous legends and stories that reflect its importance to local traditions. Therefore, the correct location for Ogbunike Cave is **near Onitsha in Anambra State**.
Ibeere 31 Ìròyìn
Awọn alaye Idahun
Quartzite, schist, and marble are all examples of metamorphic rocks.
Here's why:
Sedimentary Rocks are formed from the accumulation of sediments, while Igneous Rocks are formed from the cooling and solidification of magma or lava. Volcanic rocks are a subset of igneous rocks that specifically form from lava at the earth's surface. Thus, quartzite, schist, and marble do not fall under these categories.
Ibeere 32 Ìròyìn
Sunrise and sunset are not proofs that the Earth is spherical in shape, as they can be observed on other celestial bodies as well.
Awọn alaye Idahun
Mercury and Venus are the two planets that lie between the Sun and Earth.
Ibeere 33 Ìròyìn
Which of the following is not a type of mountain?
Awọn alaye Idahun
There is no such thing as a "mountain of accumulation". The other options - conical mountain, block mountain, and fold mountain - are all types of mountains.
Ibeere 34 Ìròyìn
The world's busiest shipping routes are on the
Awọn alaye Idahun
The world's busiest shipping routes are found on the Atlantic Ocean. This ocean plays a crucial role in global trade and transportation due to several factors:
While other oceans like the Pacific and Indian Oceans are also important for global trade, the Atlantic Ocean remains particularly significant due to its connectivity and the economic powerhouses it links. The Antarctic Circle is not a major route due to its harsh environmental conditions and minimal human inhabitation, which reduces commercial sea traffic in that region.
Ibeere 35 Ìròyìn
All the major industrial zones of Nigeria owe their origin mainly to
Awọn alaye Idahun
The major industrial zones of Nigeria owe their origin mainly to the presence of cash crops. This is because, historically, Nigeria's economy largely depended on agriculture, and the availability of these cash crops provided a foundation for establishing industries. For example, regions where cash crops such as cocoa, palm oil, rubber, and groundnuts were abundantly grown became focal points for industries.
These crops were in high demand both locally and internationally, encouraging the establishment of processing industries to add value before export. This led to the development of infrastructure and contributed to the economic growth of these regions.
Thus, the presence of cash crops has played a significant role in shaping the industrial landscape of Nigeria by attracting investments, creating jobs, and fostering economic development in the respective regions.
Ibeere 36 Ìròyìn
Which activity requires the following? I. Large area of land usually in thousands of hectares II. Availability of water either in the form of rain or irrigation III. High capital outlay
Awọn alaye Idahun
The activity that requires a large area of land usually in thousands of hectares, availability of water either in the form of rain or irrigation, and a high capital outlay is plantation agriculture. Let me explain why:
Large Area of Land: Plantation agriculture involves the cultivation of crops on a very large scale, often requiring thousands of hectares. This is necessary to achieve economies of scale and produce significant quantities of a specific crop such as tea, coffee, sugarcane, rubber, or oil palm.
Availability of Water: Crops grown on plantations need adequate water supply to thrive. This can be provided by regular rainfall or through irrigation systems. Thus, plantations are often located in regions with favorable climatic conditions or equipped with efficient water management systems.
High Capital Outlay: Establishing a plantation requires a significant initial investment. This includes procuring land and machinery, setting up irrigation systems, and maintaining infrastructure. Furthermore, plantations often rely on the employment of many workers and the use of advanced agricultural techniques, which also contribute to the high cost.
In contrast, the other activities mentioned do not primarily rely on these three factors to the same extent. For example, lumbering involves harvesting trees, which may also require substantial land area, but does not necessarily need irrigation. Tourism industry might require watering systems for landscaping, but its focus is more on site attractions. Finally, while mining requires high capital outlay and can cover large areas of land, it does not depend on the availability of irrigation systems like plantation agriculture does.
Ibeere 37 Ìròyìn
'It is a port that specializes in receiving and redistributing goods to the neighboring countries'. Which of the following ports is described in the preceding statement?
Awọn alaye Idahun
The port described in the statement is an entrepôt. An entrepôt is a type of port or a trading post where goods are imported, stored, and then re-exported. It acts as a key transfer point in international trade, allowing products to be redistributed to neighboring countries. This concept operates on the idea that items arrive in bulk and then are sent out again, perhaps even modified or repackaged, often without the goods being subject to customs duties. In essence, an entrepôt streamlines the movement of goods, facilitating international commerce and boosting trade networks.
Ibeere 38 Ìròyìn
Which of the following is not true of pie chart?
Awọn alaye Idahun
Pie charts are not suitable for representing data with wide extremes, as they are better suited for showing proportions and percentages.
Ibeere 39 Ìròyìn
Which of the following least influences population density in Nigeria?
Awọn alaye Idahun
Population density refers to the number of people living per unit of area, typically measured in people per square kilometer. In Nigeria, several factors influence population density, including natural, economic, and social factors.
Thick forest vegetation can influence population density by limiting the availability of land for habitation and agricultural activities. Areas with dense forests are usually less populated because they are harder to clear for settlements and farming. Additionally, thick forests may not have sufficient infrastructure, making them less attractive for people to live in.
Similarly, tsetse fly infestation can significantly influence population density. The tsetse fly transmits sleeping sickness, which can be a health hazard for humans and animals. Areas infested with tsetse flies might have lower population densities because people avoid settling in regions where their health and that of their livestock are at risk.
Fertile agricultural land attracts people because it supports farming activities, which is a primary livelihood for many people in Nigeria. As a result, such areas often have higher population densities due to the economic opportunities they provide.
The factor that least influences population density among the given options is mining. While mining can attract workers to specific areas, its influence is usually limited to certain regions where mineral resources are available. Since mining is typically localized and not widespread, its impact on overall population density is generally lower compared to factors like agriculture or disease. Additionally, mining areas might not have sustainable living conditions to attract large populations permanently.
In summary, while all these factors can influence population density, mining has the least impact compared to the other options because it affects fewer regions and often does not provide long-term settlement opportunities.
Ibeere 40 Ìròyìn
The climatic belts recognized by the Greek were
Awọn alaye Idahun
The ancient Greeks were pioneers in observing and classifying the Earth's climate zones. They recognized three primary climatic belts based on their understanding of the Earth's environment. These belts were:
Thus, the Greeks recognized these **three climatic belts**: Torrid, Temperate, and Frigid. This classification was an early attempt to systematically understand the Earth's climatic patterns using observable natural phenomena, such as sunlight and temperature differences.
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