Chargement....
|
Appuyez et maintenez pour déplacer |
|||
|
Cliquez ici pour fermer |
|||
Question 1 Rapport
Which of the following is not a problem militating against political and economic integration in West Africa?
Détails de la réponse
Political and economic integration can be hindered by powerful colonial ties, religion and political instability but currency should not be an obstacle because there should be an established exchange rate.
Question 2 Rapport
When weathering occurs on hill slopes, rock debris usually pile up at the bottom of the hill slope to form
Détails de la réponse
When weathering occurs on hill slopes, the rock debris usually pile up at the bottom of the hill slope to form **scrree**. Scree is a deposition of loose rock fragments that have accumulated at the base of a steep slope or cliff. It is formed as a result of the continuous process of weathering, erosion, and gravity. Weathering is the breakdown of rocks by natural processes, such as wind, water, and temperature changes. This causes rocks to become smaller and more fragmented over time. Erosion is the process of transporting the fragmented rock material down the slope. Gravity plays a significant role in moving the loose rock fragments towards the bottom of the hill slope. As the weathered rock fragments accumulate at the base of the slope, they form a pile of loose debris called scree. Scree can range in size from small pebbles to larger rocks. It is usually found on steep slopes or cliffs where the force of gravity pulls the loose rock down and accumulates it at the bottom. In conclusion, when weathering occurs on hill slopes, the rock debris piles up at the bottom to form scree.
Question 3 Rapport
Which of the following pairs of landforms can be found in the desert areas?
Détails de la réponse
Zeugens: These are tabular masses with a layer of soft rock lying beneath layer of hard rock
Rock pedestals: It consist of horizontal layer of hard and soft rocks
Question 4 Rapport
The table above shows the temperature and rainfall distribution of station Z. Study and use it to answer the question.The wettest month of the year is
Détails de la réponse
The wettest month of the year is determined by the month with the highest rainfall. From the table, the highest rainfall is 307mm, which occurs in August. Therefore, the wettest month of the year is August.
Question 5 Rapport
The instrument used to measure relative humidity is called
Détails de la réponse
The instrument used to measure relative humidity is called a hygrometer.
A hygrometer is a device that helps us determine the amount of moisture or water vapor present in the air. It measures the relative humidity, which is the percentage of moisture in the air compared to the maximum amount of moisture the air can hold at a given temperature.
There are different types of hygrometers, but one common type is the "dry and wet bulb" hygrometer. It consists of two thermometers: one thermometer with a dry bulb and another with a wet bulb.
To measure relative humidity, the wet bulb thermometer is wrapped with a moistened cloth. As the moisture on the cloth evaporates, it causes the wet bulb temperature to decrease. The dry bulb thermometer remains unaffected.
By comparing the temperatures of the dry and wet bulbs, we can calculate the relative humidity using a formula. The difference between the two temperatures helps us understand how much moisture is in the air.
So, in summary, a hygrometer is used to measure relative humidity by comparing the temperatures of a dry bulb and a wet bulb thermometer. It helps us understand how much water vapor is present in the air.
Question 6 Rapport
Which of the following has the highest salinity?
Détails de la réponse
The Dead Sea has the highest salinity among the given options. Salinity refers to the amount of salt dissolved in water. In other words, it is a measure of the saltiness of the water. The Dead Sea is located between Israel and Jordan, and it is actually not a sea but a saltwater lake. What makes the Dead Sea unique is its extremely high salt concentration. The water in the Dead Sea is about 10 times saltier than sea water. There are several reasons why the Dead Sea has such high salinity. Firstly, it is located in a region with a very hot and dry climate, which means that water evaporates quickly. As the water evaporates, the salt gets left behind, increasing the overall concentration of salt in the lake. Secondly, the Dead Sea is landlocked, which means it does not have an outlet or a flow of water that can dilute the salt concentration. Unlike the Mediterranean Sea or the Red Sea, which are connected to the global ocean system, the Dead Sea is a closed basin. As a result, the salt that enters the lake stays there and continues to accumulate over time. Lastly, the Dead Sea region is known for its rich mineral deposits, including salts. These minerals get washed into the lake through rivers and streams, further contributing to the high salinity of the water. In summary, the Dead Sea has the highest salinity among the given options due to its evaporation, lack of connection to the global ocean system, and the presence of mineral deposits. This high salinity creates a unique environment where floating becomes effortless and leads to the formation of salt crystals along the shores.
Question 7 Rapport
The type of agriculture in which water is conserved in a year so that crops can be grown in succeeding years by ploughing, mulching or harrowing is known as
Détails de la réponse
The type of agriculture described here is called dry farming.
Dry farming is a method of agriculture that focuses on conserving water in areas where water supply is limited. It is commonly used in regions with arid or semi-arid climates where rainfall is scarce and unreliable.
In dry farming, the goal is to maximize the use of available moisture in the soil and minimize water loss through evaporation. This is achieved through various practices such as ploughing, mulching, and harrowing.
Ploughing helps to break up the soil surface and create furrows or ridges, which helps to trap and retain moisture in the soil. This prevents excessive evaporation and allows the soil to hold water for a longer period of time.
Mulching involves covering the soil with a layer of organic materials such as straw, leaves, or crop residues. This helps to reduce evaporation by shading the soil surface and slows down moisture loss. Mulch also helps to improve soil structure, retain water, and suppress weed growth.
Harrowing is the process of loosening the top layer of soil after ploughing or planting. It helps to create a fine, crumbly soil structure that reduces water runoff and allows rain or irrigation water to penetrate deeper into the soil.
By practicing these techniques, dry farmers are able to conserve water and create favorable conditions for crop growth even in areas with limited rainfall. This allows them to sustain crop production in successive years without relying heavily on external sources of water.
In summary, dry farming is a method of agriculture that conserves water in arid or semi-arid regions by employing practices such as ploughing, mulching, and harrowing. These techniques help to retain moisture in the soil, reduce water loss, and enable crop production in successive years.
Question 8 Rapport
Nigeria major export commodity is
Détails de la réponse
Nigeria's biggest export is crude oil, a commodity that represents over three-quaters(78.7%) of its total exported goods by value.
Question 9 Rapport
Which of the following stations is situated in a region of tropical monsoon climate?
Détails de la réponse
**Bombay (Mumbai)** is situated in a region of tropical monsoon climate. Tropical monsoon climate is characterized by high temperatures and heavy rainfall throughout the year, with distinctive wet and dry seasons. In this climate, the wet season is associated with the monsoon winds, which bring abundant rainfall. The dry season, on the other hand, is characterized by little to no rainfall. Mumbai experiences this type of climate due to its location on the western coast of India. The Arabian Sea to the west and the Western Ghats mountain range to the east influence the city's climate. The monsoon winds blow from the southwest during the wet season (June to September), bringing intense rainfall to the region. Mumbai receives a significant amount of rainfall during this period, accounting for a large portion of its annual precipitation. During the dry season (October to May), Mumbai experiences less rainfall, but the temperatures remain relatively high. The average temperature ranges from 25 to 35 degrees Celsius (77 to 95 degrees Fahrenheit) throughout the year. In summary, Mumbai (Bombay) is situated in a region of tropical monsoon climate due to its location on the western coast of India, which experiences high temperatures and heavy rainfall during the wet season, and relatively lower rainfall during the dry season.
Question 10 Rapport
Which of the following is not correct about the great circle?
Détails de la réponse
A great circle is a type of circle that can be formed on the Earth's surface. It is called "great" because it has the same radius as the Earth. Let's go through each statement and determine which one is not correct: 1. The statement says that the Equator is a Great Circle among the latitudes. This statement is **correct**. The Equator is indeed a great circle because it is a circle that cuts the Earth in half, dividing it into the Northern Hemisphere and the Southern Hemisphere. 2. The statement says that the Greenwich Meridian and the International Date Line are the only lines of latitude forming a Great Circle. This statement is **not correct**. The Greenwich Meridian and the International Date Line are not lines of latitude; they are lines of longitude. A great circle can be formed by any line of latitude, not just the Greenwich Meridian and the International Date Line. 3. The statement says that the Great Circle divides the Earth into two equal spheres. This statement is **not correct**. The Great Circle does divide the Earth, but not into equal spheres. Instead, it divides the Earth into two hemispheres, which are halves of the Earth. 4. The statement says that the center of the Great Circle is also the center of the Earth. This statement is **not correct**. The center of a great circle does not necessarily coincide with the center of the Earth. The center of a great circle is simply the midpoint of the circle, which can be anywhere on the Earth's surface. To summarize: - Statement 1 is correct. - Statement 2 is not correct. - Statement 3 is not correct. - Statement 4 is not correct. Therefore, the statement that is not correct about the great circle is statement 2, which claims that the Greenwich Meridian and the International Date Line are the only lines of latitude forming a Great Circle.
Question 11 Rapport
The part of the earth crust covered by water bodies is known as the
Détails de la réponse
The part of the earth's crust covered by water bodies is known as the hydrosphere. The hydrosphere includes all the water on Earth, including oceans, seas, lakes, rivers, and even groundwater and atmospheric water vapor.
The hydrosphere plays a crucial role in supporting life on Earth. It provides habitats for a wide range of organisms and helps regulate the planet's climate. The hydrosphere is also a vital source of freshwater, which is essential for drinking, agriculture, and various other human activities.
The term "sial" refers to the upper part of the earth's crust, which is made up of lighter rocks like granite and makes up the continents. Therefore, it is not the correct answer for this question.
The stratosphere, on the other hand, is a layer of the Earth's atmosphere located above the troposphere. It extends from about 10 kilometers (6.2 miles) to 50 kilometers (31 miles) above the Earth's surface. The stratosphere contains the ozone layer, which helps protect the Earth from harmful ultraviolet radiation. However, it is not related to the crust or water bodies, so it is not the correct answer either.
In summary, the correct answer is the hydrosphere, which refers to the part of the Earth's crust covered by water bodies.
Question 12 Rapport
Urban type of settlement is best described as
Détails de la réponse
An urban settlement is where displaced population settle within agglomeration such as a town or city. People are mainly involved in secondary and tertiary activities like manufacturing and construction. Additionally, dispersed settlement is one of the main types of settlement pattern used to classify rural settlement.
Question 13 Rapport
A tremendous pressure or temperature change may lead to the formation of
Détails de la réponse
Gnesis is a metamorphic rock. Metamorphic rocks are formed from pre-existing rocks which have been changed as a result of great heat and pressure
Question 14 Rapport
River regime is best described as the
Détails de la réponse
The river regime generally describes the character of the typical fluctuations of a flow of a river, but can also refer to the mathematical relationship between the river discharge and its width, depth and slope
Question 15 Rapport
Kossou Dam is located on river
Détails de la réponse
Lake Kossou is Cote d'ivores largest lake. It lies on the Bandama river in the center of the country. It is an artificial lake, created in 1973 by damming the Badama river at kossou
Question 16 Rapport
The coastal regions of Sierra Leone record an annual rainfall of over
Détails de la réponse
Annual rainfall in Sierra Leone coastal regions is over 4,800m, which makes it the wettest country in West Africa.
Question 17 Rapport
Which of the following sources of power supply is renewable?
Détails de la réponse
Solar energy is the energy gotten from the sun. The sun is the largest (star and its also the ultimate source of light and energy to all the planets. Coal, gas and Nuclear energy are hot renewable(i.e they cannot be reused when exhausted)
Question 18 Rapport
The highest concentration of industries in Nigeria is found in the
Détails de la réponse
The highest concentration of industries in Nigeria can be found in the Western zone. This region is also known as the Lagos-Ibadan Industrial Axis.
There are several reasons why the Western zone has the highest concentration of industries:
1. Proximity to Ports: The Western zone is close to major seaports, such as the Apapa Port in Lagos. This proximity allows for easier import and export of goods, reducing transportation costs for industries.
2. Infrastructure: The Western zone benefits from well-developed infrastructure, including good road networks, railways, and access to reliable power supply. These factors make it more conducive for industries to set up and operate efficiently.
3. Market Access: The Western zone has a large population, including the bustling city of Lagos, which provides a ready market for industries. The region serves as a major commercial hub, attracting businesses from various sectors.
4. Availability of Skilled Labor: The Western zone is home to several educational institutions, including universities and technical colleges. This abundance of institutions ensures a steady supply of skilled labor for industries in the region.
5. Government Support: The government has implemented policies and incentives to encourage industrial growth in the Western zone. These include tax incentives, subsidies, and initiatives such as the Lagos Free Trade Zone, which attracts both local and foreign investors.
In summary, the Western zone of Nigeria, specifically the Lagos-Ibadan industrial axis, has the highest concentration of industries due to its proximity to ports, well-developed infrastructure, access to market, availability of skilled labor, and government support. This region continues to attract businesses, driving economic growth and development in Nigeria.
Question 19 Rapport
Which of the following landforms is associated with parallel vaulting?
Détails de la réponse
It should be noted that landforms produced by faulting are Rift valley and Block mountain. Rift valley occurs when there are tensional and compression forces operating. Two parallel faults occur and there will be gravitational force leading to the sinking of the land between the faults.
Question 20 Rapport
"An open forest with evergreen, thick leathery leaves and woody stems with deep roots" is known as
Détails de la réponse
Mediterranean vegetation consists largely of broad-leaved evergreen shrubs having woody stems with thick roots.
Question 21 Rapport
Which of the following is not a plantation crop?
Détails de la réponse
Rye is not a plantation crop. Plantation crops are large-scale crops that are grown specifically for commercial purposes, often on plantations or large farms. These crops are usually labor-intensive and require specialized farming techniques. Cocoa, oil palm, and rubber are all examples of plantation crops. Cocoa is the main ingredient in chocolate, oil palm produces palm oil used in various products, and rubber is used to make tires and other rubber products. On the other hand, rye is a grain crop that is typically grown in small to medium-sized farms. It is used primarily for making bread, whiskey, and animal feed. Unlike plantation crops, rye does not require extensive labor or specialized farming techniques. In summary, rye is not a plantation crop because it is grown on smaller farms and does not have the same commercial scale as crops like cocoa, oil palm, and rubber. These plantation crops have large-scale production and are used in various industries.
Question 22 Rapport
Quartz, fieldspar and mica are three principal mineral that can easily be seen in
Détails de la réponse
Quartz, feldspar, and mica are three principal minerals that can easily be seen in granite. Granite is a type of igneous rock, which means it is formed from the cooling and solidification of molten magma or lava. It is composed mainly of three minerals: quartz, feldspar, and mica. - **Quartz:** Quartz is a hard and durable mineral that is commonly found in granite. It appears as small or large grains and has a glassy or translucent appearance. It comes in different colors, including clear, white, pink, and gray. - **Feldspar:** Feldspar is the most abundant mineral in granite. It is a group of minerals that have a specific crystal structure. Feldspar can be recognized by its white, pink, or gray color. It often appears as large, elongated grains in granite. - **Mica:** Mica is another mineral commonly found in granite. It has a distinct layered structure and can be easily split into thin, flexible sheets. Mica is often shiny and comes in various colors such as brown, black, or green. When you look at granite, you may see specks or grains of quartz, larger grains of feldspar, and thin layers or flakes of mica. These minerals give granite its characteristic appearance and make it a popular choice for countertops, flooring, and construction materials. It's worth noting that while quartz, feldspar, and mica are the three principal minerals in granite, other minerals may also be present in smaller amounts. However, it is the abundance of these three minerals that gives granite its distinctive texture and appearance.
Question 23 Rapport
One of the features of wind deposition is
Détails de la réponse
Inselberg is formed from the existence of extensive old plateau. It is caused as a result of weathering and remval of weathered materials
Question 24 Rapport
Soil erosion by action of rain can be caused y all the following except
Détails de la réponse
Aridity is a long term lack of rainfall or moisture. Soil erosion cannot take place in an srid area.
Question 25 Rapport
Great Britain and Germany are trading partners of west African countries from
Détails de la réponse
Great Britain and Germany are trading partners of West African countries from Western Europe. Western Europe refers to the region that is located in the western part of the European continent. It includes countries such as the United Kingdom (which includes Great Britain) and Germany. Trading partners are countries that engage in the exchange of goods and services with each other. In this case, West African countries have established trading relationships with Great Britain and Germany. This means that West African countries import goods and services from Great Britain and Germany, and they also export their own goods and services to these countries. The trading partnership between West African countries and Great Britain and Germany is mutually beneficial. West African countries can access a wider range of products from Great Britain and Germany, providing opportunities for economic growth and development. On the other hand, Great Britain and Germany can access valuable resources and markets in West Africa. Overall, the trading relationship between Great Britain, Germany, and West African countries helps to facilitate economic cooperation, promote regional development, and enhance international trade between these regions.
Question 26 Rapport
A major function performed by rural settlement is
Détails de la réponse
**A major function performed by rural settlements is agriculture.** Rural settlements are areas where people live in small towns or villages, often located outside of cities. These settlements are mainly involved in agricultural activities, which means they are focused on farming and cultivating crops. Agriculture is an essential function of rural settlements because it provides food and other resources for the people living there. Farmers grow various crops such as wheat, rice, corn, and vegetables, which are then consumed by the community or sold to nearby towns and cities. In addition to crops, rural settlements may also have livestock like cows, sheep, or chickens, which provide meat, eggs, and dairy products. Agriculture is not only important for providing food, but it also contributes to the local economy. When farmers sell their products, it generates income for the community, allowing them to purchase other necessities and services. Furthermore, agriculture helps to sustain the environment in rural areas. Farmers often practice sustainable farming techniques, such as crop rotation and the use of organic fertilizers, to maintain soil fertility and prevent the depletion of natural resources. Overall, agriculture is a vital function of rural settlements as it supports the livelihoods of the residents, provides food and resources, contributes to the local economy, and helps sustain the environment.
Question 27 Rapport
The sparse population in the middle belt of West Africa can be traced to all of the following except
Détails de la réponse
The sparse population in the middle belt of West Africa can be traced to all of the following except the concentration of industries.
1. Inter-ethnic war: Conflict between different ethnic groups can cause displacement and hinder population growth in the affected areas. It leads to a disruption in the social fabric and discourages people from settling in these regions.
2. Tsetse fly infestation: The presence of tsetse flies, which are carriers of the sleeping sickness disease, can greatly affect human habitation. These flies are notorious for their bites which can transmit the disease to humans and livestock. The presence of tsetse flies in the middle belt of West Africa makes it difficult for people to inhabit the area due to health risks.
3. Arab slave trade in the North: The Arab slave trade, which took place predominantly in North Africa, resulted in the forced migration and enslavement of many African populations. This historic slave trade did not have a direct impact on the sparse population in the middle belt of West Africa.
4. Concentration of industries: The concentration of industries usually leads to urbanization and increased population in certain areas. This option does not contribute to the sparse population in the middle belt of West Africa.
Therefore, the correct answer is that the sparse population in the middle belt of West Africa cannot be traced to the concentration of industries.
Question 28 Rapport
Which of the following is not a process of chemical weathering?
Détails de la réponse
Chemical weathering is a process in which the chemical composition of rocks and minerals is altered due to exposure to certain substances or environmental conditions. It plays a significant role in the breakdown and decomposition of rocks over time. Out of the options given, **frost action** is not a process of chemical weathering. Frost action, also known as freeze-thaw weathering, refers to the physical breakdown of rocks caused by repeated freezing and thawing of water within the rock fractures. It is a type of physical weathering, not chemical. Now let's briefly explain the other three options and how they relate to chemical weathering: 1. **Hydrolysis** is a chemical process in which water reacts with minerals in the rock, leading to their breakdown. Minerals such as feldspar and mica are commonly affected by hydrolysis. Water molecules interact with these minerals, causing them to break down into new minerals or dissolved ions. This process weakens the rock's structure and contributes to its gradual degradation. 2. **Oxidation** is another chemical process that occurs when certain minerals in rocks react with oxygen in the presence of water or air. This reaction causes the minerals to undergo a chemical change, resulting in the formation of new compounds. For example, when iron minerals in rocks come into contact with oxygen, they can oxidize and form iron oxide, more commonly known as rust. This process weakens the rock and makes it more susceptible to further weathering. 3. **Carbonation** is the chemical weathering process associated with the dissolution of carbon dioxide in water, forming carbonic acid. This acid reacts with minerals such as calcium carbonate (present in rocks like limestone and marble), leading to their dissolution. Carbonation is a common process in regions with a high concentration of carbon dioxide in the atmosphere or in areas where water with dissolved carbon dioxide comes into contact with rocks. In conclusion, **frost action** is not a process of chemical weathering but rather a form of physical weathering. Hydrolysis, oxidation, and carbonation, on the other hand, are all examples of chemical weathering processes that contribute to the degradation and alteration of rocks over time.
Question 29 Rapport
Which of the following distinguishes rotation from revolution?
Détails de la réponse
The statement that distinguishes rotation from revolution is that "The earth rotates on its axis while it revolves around the sun in an elliptical orbit." Rotation refers to the spinning of an object around its own axis. In the case of the Earth, it rotates on an imaginary line called its axis. This rotation is responsible for various phenomena like the change between day and night. As the Earth rotates, different parts of it are exposed to the Sun's light, creating the cycle of day and night. Revolution, on the other hand, refers to the movement of an object around another object in space. In the case of the Earth, it revolves around the Sun in an elliptical orbit. This revolution takes approximately 365.25 days to complete, which gives us a year. So, to summarize, rotation refers to the spinning of an object on its axis, causing phenomena like day and night. Revolution refers to the movement of an object around another object in space, giving us the concept of a year.
Question 30 Rapport
Africa has the largest potential reserve of hydro-electric power in the world because
Détails de la réponse
It is of no doubt that Africa has the highest potential reserves of hydro-electric power because it is surrounded by large oceans.
Question 31 Rapport
Which of the following rocks is organically formed?
Détails de la réponse
Shale rocks are made of clay-sized particles and have a laminated appearance. They are a type of organica sedimentary rock.
Question 32 Rapport
Which of the following is a wind deposited land form?
Détails de la réponse
A wind-deposited landform refers to a geological feature that is created or shaped by the action of wind carrying and depositing sediments. In this context, out of the four options given, the one that is a wind-deposited landform is **loess**. Loess is a specific type of sediment that is composed of fine particles of silt and clay that have been blown by wind over long distances and eventually deposited. It is typically pale yellow or light brown in color and has a very fine texture. Loess deposits often form in regions with strong and consistent winds, such as dry deserts or the margins of glacial systems. These sediments accumulate over time, often in thick layers, creating distinct landforms. One characteristic feature associated with loess is its ability to be easily eroded by wind and water. This erosion gives rise to unique landforms, such as **yardangs** and **deflation hollows**, which are also mentioned in the given options. A yardang is a ridge of rock that has been carved and streamlined by wind erosion. The wind scours away the loose sediment, leaving behind elongated ridges that run parallel to the prevailing wind direction. Yardangs can vary in size from a few meters to several kilometers long. A deflation hollow, on the other hand, is a depression in the landscape that forms when loose sediments are eroded away by wind, leaving behind a lowered area. These hollows can occur individually or in groups, and their size and shape depend on the intensity and duration of wind erosion. While both yardangs and deflation hollows are features associated with wind erosion, they are not technically wind-deposited landforms since they are created by the removal of sediment rather than the deposition of sediment. In summary, out of the options given, the wind-deposited landform is **loess**. It is a type of fine sediment made of silt and clay particles that are transported and deposited by the wind. Yardangs and deflation hollows, although associated with wind erosion, are not specifically wind-deposited landforms.
Question 33 Rapport
The major crop grown in the El juf Basin of Mali is
Détails de la réponse
The major crop grown in the El Juf Basin of Mali is cotton. Cotton is a plant that is mainly grown for its fiber, which is used to make fabrics and textiles. The El Juf Basin in Mali has favorable conditions for growing cotton, such as a warm climate and fertile soil.
Cotton plants require a long growing season with plenty of sunshine and a moderate amount of rainfall. The El Juf Basin receives sufficient rainfall and has an irrigation system in place to ensure that the cotton plants are well-watered.
Cotton cultivation in the El Juf Basin provides a significant source of income for the local farmers and contributes to the economy of Mali. Cotton farms in this region employ many people and support the livelihoods of the local communities.
In summary, the major crop grown in the El Juf Basin of Mali is cotton due to its suitability to the region's climate and soil conditions.
Question 34 Rapport
What is the temperature around an aeroplane flying at an altitude of 4000metres if the temperature on the earth's surface is 40ºc ?
Détails de la réponse
Lapse rate is simply described as 0.65°C per 100m of ascent or 6.5ºC per 1000m of ascent.
Therefore 4000m of ascent= 6.5ºC x 4000m/1000m=26.0ºC
Then, the temperature around the aeroplane is = 40ºC - 26ºC = 14°C
Question 35 Rapport
A line joining all points of equal salinity is an
Détails de la réponse
A line joining all points of equal salinity is called an isohaline. In simpler terms, an isohaline is a line that connects points in a body of water that have the same level of salinity or saltiness. It is similar to a contour line you might see on a map that connects points of equal elevation. Salinity refers to the amount of salt dissolved in water. Different areas of the ocean, sea, or even a lake can have varying levels of salinity. An isohaline helps us visualize these varying levels by connecting the points with the same salinity. By studying and mapping isohalines, scientists can gain valuable insights into the distribution and movement of saltwater in different bodies of water. This information is important for understanding ocean currents, marine life habitats, and even for managing freshwater resources. To summarize, an isohaline is a line that connects points with the same salinity in a body of water. It helps us understand the distribution and movement of saltwater and is valuable in various scientific studies and resource management.
Question 36 Rapport
Which of the following is a feature of heavy industries?
Détails de la réponse
A feature of heavy industries is that they are capital-intensive. This means that they require a significant amount of investment in machinery, equipment, and infrastructure to operate efficiently. Unlike light industries, which typically involve smaller-scale operations, heavy industries involve large factories or plants that are designed to produce goods on a larger scale. The term "heavy" in heavy industries refers to the nature of the products being manufactured, such as machinery, steel, chemicals, and automobiles. These products often require heavy machinery and specialized equipment to produce. Due to their large-scale operations and the need for substantial capital investment, heavy industries usually have a longer payback period for their investments. Some examples of heavy industries include manufacturing plants for automobiles, oil refineries, steel mills, and chemical production facilities. These industries usually have a higher production capacity and require a significant amount of resources and manpower to operate. In summary, heavy industries are characterized by their capital-intensive nature, large-scale operations, and production of goods that require heavy machinery. These industries play a crucial role in the economy by producing essential products and contributing to employment opportunities.
Question 37 Rapport
The land-use activities which can be considered responsible for soil erosion in the tropics are
Détails de la réponse
Industrial activities such as production, construction etc, monoculture and lumbering are responsible for erosion in the tropics
Question 38 Rapport
A piece of evidence that confirms that the earth is spherical is
Détails de la réponse
Evidence of the earth's sphericity
-circumarigation of the earth
-lunar eclipse(eclipse of the moon)
-sunrise and sunset
-ship visibility
-the circular horizon
Question 39 Rapport
What is the population density of a country with a total population of 140,000,000 and a total land area of 500,000 (\Km^2\)?
Détails de la réponse
To calculate the population density of a country, we need to divide the total population of the country by its total land area. In this case, we are given that the total population of the country is 140,000,000 and the total land area is 500,000 km². To find the population density, we divide the population by the land area: Population density = Total population / Total land area Population density = 140,000,000 / 500,000 = 280 persons per km². Therefore, the correct answer is **280 persons per km²**.
Question 40 Rapport
Buying and selling of goods and services within a country is termed as
Détails de la réponse
The buying and selling of goods and services within a country is known as internal trade.
Internal trade refers to the exchange of goods and services between individuals, businesses, and organizations within the borders of a country. It involves the transfer of goods and services from producers to consumers or from one business to another within the same country.
For example, when you go to a local store to buy groceries or when a company sells its products to customers within the country, it is considered internal trade.
Internal trade is an essential part of a country's economy as it enables the circulation of goods and services within the country, stimulates economic growth, creates job opportunities, and fulfills the needs and wants of the people.
International trade, on the other hand, refers to the exchange of goods and services between different countries. Barter is a system of trade where goods or services are exchanged directly without the use of money. Foreign trade specifically refers to the trade between different countries or the import and export activities of a country.
Therefore, in this context, the correct term for the buying and selling of goods and services within a country is internal trade.
Souhaitez-vous continuer cette action ?