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Pregunta 1 Informe
Which of the following pairs of landforms can be found in the desert areas?
Detalles de la respuesta
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
Pregunta 2 Informe
Which of the following is not a problem militating against political and economic integration in West Africa?
Detalles de la respuesta
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.
Pregunta 3 Informe
Which of the following is not correct about the great circle?
Detalles de la respuesta
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.
Pregunta 4 Informe
The largest ocean in the world is the
Detalles de la respuesta
The largest ocean in the world is the Pacific Ocean. It covers the most extensive area compared to the other options listed. The Pacific Ocean stretches from the western coast of North and South America to the eastern coast of Asia and Australia. It is so vast that it is larger than the landmass of all the continents combined.
Its immense size is due to the tectonic plate boundaries that surround it. The Pacific Ocean is bordered by the Ring of Fire, a region that experiences frequent volcanic activity and earthquakes. This constant reshaping of the seafloor has allowed the Pacific Ocean to expand and dominate the Earth's surface.
With an area of approximately 63 million square miles, the Pacific Ocean is home to numerous islands, including Hawaii, Tahiti, and Fiji. It is also famous for its deep trenches, like the Mariana Trench, which is the deepest point in the world's oceans.
The Pacific Ocean plays a vital role in regulating the Earth's climate. It absorbs much of the sun's heat, helping to distribute warmth across the planet. This ocean is also crucial for global transportation and trade, serving as a major marine highway between the Americas, Asia, and Oceania.
In summary, the Pacific Ocean is the largest ocean in the world, encompassing a vast area and serving as a vital component of Earth's climate and global connectivity.
Pregunta 5 Informe
Which of the following is a major boost of tourism?
Detalles de la respuesta
A major boost of tourism is adequate publicity about natural scenery.
When there is adequate publicity about natural scenery, it creates awareness among tourists about the beauty and uniqueness of a particular destination. This can include stunning landscapes, national parks, wildlife reserves, breathtaking mountains, pristine beaches, or iconic landmarks.
Such publicity can be done through various means, including travel websites, social media platforms, travel documentaries, brochures, and advertisements. When potential visitors see and hear about the natural beauty of a place, it increases their desire to visit and explore it.
This publicity helps to attract tourists from different parts of the world who are eager to experience and appreciate the wonders of nature. Tourists are motivated to visit new places they have heard about and seen pictures of, and this results in a boost in tourism.
When tourists visit a destination, they contribute to the local economy by spending money on accommodation, food, transportation, souvenirs, and various activities. This spending stimulates economic growth and development in the area.
Furthermore, tourism also promotes cultural exchange and understanding between different regions and people. Visitors have the opportunity to learn about different cultures, traditions, and ways of life, while locals get to interact with and learn from tourists as well.
In summary, adequate publicity about natural scenery plays a major role in boosting tourism by attracting tourists and stimulating economic growth. It helps generate interest and curiosity among potential visitors, leading them to explore and appreciate the beauty of various destinations.
Pregunta 6 Informe
The broad-leafed evergreen and dense equatorial forest of the Amazon basin is called
Detalles de la respuesta
The broad-leafed evergreen and dense equatorial forest of the Amazon basin is called selvas. Selvas is a term used to describe the lush, vibrant rainforest found in the Amazon.
These forests are characterized by their tall trees with large, broad leaves that can capture as much sunlight as possible. The leaves of these trees stay green all year round, giving the forest a constant appearance of being "evergreen."
The Amazon rainforest is also known for its incredible biodiversity, with a wide variety of plant and animal species living in this habitat. This is due to the constant warm and humid climate, as well as the diverse range of ecosystems within the region.
The dense and thick vegetation in the selvas plays a crucial role in maintaining the health of our planet. It serves as a carbon sink, absorbing large amounts of carbon dioxide and releasing oxygen through photosynthesis. Additionally, the Amazon rainforest is often referred to as the "lungs of the Earth" because of its significant contribution to global oxygen production.
In conclusion, the broad-leafed evergreen and dense equatorial forest of the Amazon basin is known as selvas. It is a unique and important ecosystem with immense biodiversity and crucial ecological functions.
Pregunta 7 Informe
The most common form of migration experienced in countries of Tropical Africa is
Detalles de la respuesta
The most common form of migration experienced in countries of Tropical Africa is **rural-urban migration**. This refers to the movement of people from rural areas, such as villages and small towns, to urban areas, such as cities and towns. There are various reasons why rural-urban migration is prevalent in Tropical Africa. One of the main factors is the search for better economic opportunities. Urban areas tend to offer more job opportunities, higher wages, and better living conditions compared to rural areas. Many people from rural communities migrate to cities in hopes of finding better employment and improving their standard of living. Another important factor contributing to rural-urban migration is the availability of social amenities and services in urban areas. Cities often have better access to education, healthcare, infrastructure, and recreational facilities. People may migrate to urban centers to access these services and provide better opportunities for their families. Moreover, urban areas serve as economic and cultural hubs, attracting people from rural areas seeking to benefit from the diversity and dynamism of city life. Cities offer a wide range of social and cultural activities, entertainment options, and opportunities for networking and socializing. However, it is important to note that rural-urban migration also presents some challenges. The rapid influx of people into cities can lead to overcrowding, strain on infrastructure, and increased competition for resources and jobs. Additionally, migration can have an impact on rural communities as they may experience a loss of human capital and skills. In summary, rural-urban migration is the most common form of migration in countries of Tropical Africa due to the search for better economic opportunities, access to social amenities, and the attraction of urban culture and lifestyle. While it brings benefits to individuals and urban areas, it also poses challenges that need to be addressed for sustainable development.
Pregunta 8 Informe
Jos plateau is an example of a
Detalles de la respuesta
Jos plateau is a Volcanic plateau . It possess volcanic features such as a dome, single vents and clusters of 3-4 cones aligned.
Pregunta 9 Informe
Which of the following distinguishes rotation from revolution?
Detalles de la respuesta
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.
Pregunta 10 Informe
Under the Greek system of climate classification, the world is divided into
Detalles de la respuesta
The world is divided into torrid, temperate, and frigid zones under the Greek system of climate classification. 1. Torrid Zone: This zone is the closest to the equator and is known for its hot and humid climate. It experiences high temperatures throughout the year with minimal variations. The torrid zone is characterized by tropical rainforests, savannas, and deserts. 2. Temperate Zone: The temperate zone is situated between the torrid and frigid zones. It has a moderate climate with distinct seasons. The temperatures in this zone vary significantly throughout the year, with warm summers and cool winters. This zone is known for its diverse vegetation, including deciduous forests and grasslands. 3. Frigid Zone: The frigid zone is located in the extreme north and south of the Earth, near the poles. It is known for its extremely cold temperatures, especially during the winter season. The frigid zone is covered with ice, and only a few plants and animals can survive in this harsh environment. In summary, the Greek system of climate classification divides the world into torrid, temperate, and frigid zones, depending on factors such as temperature, humidity, and vegetation.
Pregunta 11 Informe
The coastal regions of Sierra Leone record an annual rainfall of over
Detalles de la respuesta
Annual rainfall in Sierra Leone coastal regions is over 4,800m, which makes it the wettest country in West Africa.
Pregunta 12 Informe
The instrument used to measure relative humidity is called
Detalles de la respuesta
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.
Pregunta 13 Informe
Crater lakes are usually associated with areas
Detalles de la respuesta
A crater lake is usually considered as a dormant volcano. They tend to have a steep-sided conical form
Pregunta 14 Informe
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\)?
Detalles de la respuesta
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**.
Pregunta 15 Informe
Exports from Mali are most likely to pass through the sea port at
Detalles de la respuesta
Exports from Mali are most likely to pass through the sea port at Abidjan. Abidjan is the **largest port in West Africa** and is strategically located on the Gulf of Guinea. It has extensive infrastructure, including deep-water berths and modern cargo handling equipment, making it capable of handling large volumes of goods. Mali is a landlocked country, meaning it does not have direct access to the sea. Therefore, to export its goods, Mali needs to rely on neighboring countries with access to the sea. Abidjan, located in Ivory Coast, is the **most convenient sea port for Mali**. It is relatively close in proximity to Mali and has well-developed road and rail connections, making it an ideal choice for transporting goods from Mali to the port. Furthermore, Abidjan offers a wide range of services to facilitate trade, including customs clearance, storage facilities, and efficient cargo handling. It is also a hub for international shipping, with connections to various ports worldwide, enabling Mali to access global markets for its exports. In summary, due to its geographical proximity, well-developed infrastructure, and convenient transportation links, exports from Mali are most likely to pass through the sea port at Abidjan.
Pregunta 16 Informe
Great Britain and Germany are trading partners of west African countries from
Detalles de la respuesta
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.
Pregunta 17 Informe
The coastal regions of Sierra Leone record an annual rainfall of over
Detalles de la respuesta
The annual rainfall in sierra leone coastal regions is over 4,800m, which makes it the wettest country in West Africa
Pregunta 18 Informe
Which of the following is not a plantation crop?
Detalles de la respuesta
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.
Pregunta 19 Informe
A major function performed by rural settlement is
Detalles de la respuesta
**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.
Pregunta 20 Informe
Which of the following sources of power supply is renewable?
Detalles de la respuesta
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)
Pregunta 21 Informe
Which of the following represents the correct sequence in which denudation occurs?
Detalles de la respuesta
Denudation is the process of wearing away the Earth's surface by various agents such as water, wind, and ice. It involves the removal and transportation of rocks, sediments, and soil. The correct sequence in which denudation occurs is:
Weathering → Erosion → Deposition
1. Weathering: This is the first step in denudation. Weathering refers to the breakdown and decomposition of rocks and minerals at or near the Earth's surface. It can occur through physical, chemical, or biological processes. Physical weathering involves the mechanical breakdown of rocks into smaller fragments due to factors like temperature changes, frost action, or plant roots. Chemical weathering involves the alteration of rock composition through processes like dissolution, oxidation, or hydrolysis. Biological weathering refers to the breakdown of rocks by living organisms such as plants and animals.
2. Erosion: Once weathering has broken down the rocks, erosion takes place. Erosion is the process of removing and transporting the weathered materials from their original location to a new location. This is often done by agents such as water, wind, glaciers, or gravity. For example, water erosion occurs when rainfall or flowing water carries away sediments, creating channels, gullies, and valleys. Wind erosion happens when strong winds pick up and transport loose particles, leading to the formation of sand dunes and desert landscapes.
3. Deposition: After weathered materials have been eroded and transported, they are eventually deposited. Deposition occurs when the eroded particles and sediments settle down and come to rest in a new location. This can happen when the transporting agent loses energy, such as when a river slows down or when wind speed decreases. Deposited materials can form various landforms such as deltas, alluvial plains, or beaches.
In summary, denudation starts with weathering, where rocks are broken down. Then erosion takes place, transporting the weathered materials. Finally, the eroded materials are deposited in a new location.
Pregunta 22 Informe
Urban type of settlement is best described as
Detalles de la respuesta
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.
Pregunta 23 Informe
A piece of evidence that confirms that the earth is spherical is
Detalles de la respuesta
Evidence of the earth's sphericity
-circumarigation of the earth
-lunar eclipse(eclipse of the moon)
-sunrise and sunset
-ship visibility
-the circular horizon
Pregunta 24 Informe
Plateaux formed together with fold mountains are best described as
Detalles de la respuesta
Plateaux formed together with fold mountains are best described as "intermountain plateaus." Intermountain plateaus are large, elevated flat lands that are found between different mountain ranges. These plateaus are typically formed when tectonic forces cause the Earth's crust to buckle and fold, creating fold mountains. As these mountains rise, the surrounding areas are also uplifted, resulting in the formation of plateaus. Unlike regular plateaus, intermountain plateaus are not as deeply dissected by erosion. This means that they generally have a more even and flat topography compared to other types of plateaus. However, they still exhibit some degree of ruggedness due to the uplift and folding processes that occurred during their formation. Overall, intermountain plateaus are important features of the Earth's landscape. They provide a transitional zone between mountainous regions and the lower-lying areas beyond, and they often serve as essential water catchment areas, playing a crucial role in supplying water to rivers and streams. Their relatively flat terrain also makes them suitable for human activities such as agriculture and transportation.
Pregunta 25 Informe
Which of the following is associated with savanna vegetation?
Detalles de la respuesta
avannas represents the vast majority of the areas which are characterised by a layerof perenial herbaceous plants, such as sedges with varrying degree of scrubs
Pregunta 26 Informe
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
Detalles de la respuesta
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.
Pregunta 27 Informe
The table above shows the temperature and rainfall distribution of station Z. Study and use it to answer the question. Which month of the year has the highest temperature
Detalles de la respuesta
To determine which month of the year has the highest temperature in station Z, we should analyze the data given in the table.
Looking at the table, we can see that the **temperature values** are given in the column labeled "Temperature (°C)". We need to find the month with the highest temperature value.
By examining the temperature values for each month, we can observe the following:
- In **April**, the temperature is 27°C - In **May**, the temperature is 30°C - In **June**, the temperature is 32°C - In **August**, the temperature is 29°C
From this information, we can clearly see that the month with the **highest temperature** in station Z is **June**, with a temperature of **32°C**.
Therefore, the answer to the question is that **June** is the month of the year with the highest temperature in station Z, as evidenced by the table.
Pregunta 28 Informe
Countries in the northern hemisphere experience shorter days and longer nights when the sun is overhead on the
Detalles de la respuesta
On June 21, the sun is overhead at the tropic of cancer, resulting in June or summer scistics
Pregunta 29 Informe
A tremendous pressure or temperature change may lead to the formation of
Detalles de la respuesta
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
Pregunta 30 Informe
The main reason for which most manufacturing industries in West Africa are concentrated in cities and towns along the coast is that they have
Detalles de la respuesta
This is due to the fact that there is a large number of warehouses in these regions. These warehouses are storage facilities where the goods are kept prior or after shipping.
Pregunta 31 Informe
Kossou Dam is located on river
Detalles de la respuesta
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
Pregunta 32 Informe
Soil erosion by action of rain can be caused by all of the following except
Detalles de la respuesta
Soil erosion by rain can occur when the force of raindrops and the resulting surface runoff remove the top layer of soil. This process can be harmful and lead to the loss of fertile soil needed for growing crops and plant growth. There are several factors that can contribute to soil erosion by rain, but one of the options mentioned does not cause it. Let's analyze each option:
Tropical rainstorms: Tropical rainstorms are often associated with heavy rainfall and intense precipitation. The large amount of rainwater can create powerful runoff that can wash away soil particles and contribute to erosion. Therefore, tropical rainstorms can indeed cause soil erosion by rain.
Scanty vegetation: Vegetation, such as plants and trees, plays a crucial role in preventing soil erosion. The roots of plants help hold the soil together, reducing the impact of raindrops and preventing excessive runoff. When vegetation is sparse or absent, there are no roots to anchor the soil, making it more vulnerable to erosion. So, scanty vegetation can contribute to soil erosion by rain.
Steep slopes: Steep slopes can accelerate the process of soil erosion by rain. When rainwater flows down a steep slope, it gains momentum and power, increasing the force with which it hits the soil. This force can dislodge soil particles and carry them away, leading to erosion. Therefore, steep slopes can cause soil erosion by rain.
Aridity: Aridity refers to dryness or a lack of moisture. In arid regions, rainfall is limited, and the soil may be dry and less prone to erosion caused by rain. The lack of significant rainfall reduces the chances of soil particles being dislodged by raindrops or carried away by runoff, making aridity a factor that does not cause soil erosion by rain.
In conclusion, all the options except aridity can contribute to soil erosion by rain. Tropical rainstorms, scanty vegetation, and steep slopes can all increase the likelihood of soil erosion. However, in arid regions where there is a lack of moisture, the risk of soil erosion caused by rain is reduced.
Pregunta 33 Informe
River regime is best described as the
Detalles de la respuesta
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
Pregunta 34 Informe
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
Detalles de la respuesta
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.
Pregunta 35 Informe
One of the features of wind deposition is
Detalles de la respuesta
Inselberg is formed from the existence of extensive old plateau. It is caused as a result of weathering and remval of weathered materials
Pregunta 36 Informe
Quartz, fieldspar and mica are three principal mineral that can easily be seen in
Detalles de la respuesta
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.
Pregunta 37 Informe
Which of the following landforms is associated with parallel vaulting?
Detalles de la respuesta
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.
Pregunta 38 Informe
The difference in time between two longitudes is approximately
Detalles de la respuesta
The difference in time between two longitudes is approximately 4 minutes.
To understand this, let's first understand what longitudes are. Longitudes are imaginary lines that run vertically around the Earth, from the North Pole to the South Pole. They help to identify specific locations on the Earth's surface.
Now, the Earth takes 24 hours to complete one full rotation around its axis. This rotation results in the sun appearing to rise and set in different parts of the world at different times. This is what gives us our concept of time zones.
By convention, the Earth is divided into 24 time zones, each covering approximately 15 degrees of longitude. Each time zone represents an hour of difference in time.
So, if we do the math, we can calculate that with 360 degrees (the full circumference of the Earth) divided by 24 time zones, each time zone covers 15 degrees of longitude. This means that for every 15 degrees of longitude you travel east or west, there is a time difference of about one hour.
Since each time zone represents one hour and there are 60 minutes in an hour, we can calculate that the time difference for every 1 degree of longitude is approximately 4 minutes (60 minutes divided by 15 degrees).
Therefore, the correct answer is 4 minutes
Pregunta 39 Informe
The sun is vertically overhead at the tropic of Caprison in
Detalles de la respuesta
The sun is vertically overhead at the tropic of Capricorn on December 22nd. To understand why, we need to know a few things about the Earth's tilt and its movement around the sun. The Earth is tilted on its axis at an angle of about 23.5 degrees. This tilt is what gives us our seasons. During the year, the Earth moves around the sun in an elliptical path. On two specific days, called the solstices, the sun reaches its highest or lowest point in the sky. These are the days when the tilt of the Earth is most noticeable. On December 22nd, the Northern Hemisphere is tilted away from the sun. This means that the sun appears lower in the sky and its rays are more spread out. Meanwhile, the Southern Hemisphere is tilted towards the sun. This tilt causes the sun to appear higher in the sky and its rays to be more concentrated. The tropic of Capricorn is located at about 23.5 degrees south of the equator. On December 22nd, the sun is directly overhead at this latitude because the tilt of the Earth causes the sun's rays to be focused at that point. In summary, on December 22nd, the sun is directly overhead at the tropic of Capricorn because of the Earth's tilt and its position in its orbit around the sun.
Pregunta 40 Informe
The dam which is not used in Gezira is the
Detalles de la respuesta
Jebal Azula is a dam which is not used in Gezira scheme
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