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Swali 1 Ripoti
An example of a coastline of emergence is
Maelezo ya Majibu
A coastline of emergence refers to a type of coastline where the land is rising relative to the sea level. This rise in land can be caused by geological processes such as tectonic movements or isostatic rebound. One example of a coastline of emergence is a **raised beach**. A raised beach is a coastal landform that was once at sea level but has been lifted up above the current sea level. This lifting can occur due to processes like tectonic activity or changes in the Earth's crust. When the land rises, the shoreline shifts upwards, leaving behind a flat or gently sloping platform. This platform, known as a raised beach, is typically located above the reach of waves and tides. It can vary in width and elevation, extending for several kilometers inland. A raised beach often has distinctive features such as wave-cut notches, terraces, and marine deposits like shells or sediments. These features serve as evidence of its former connection to the sea. It is important to note that a raised beach is just one type of coastline of emergence. Other examples include dalmation coasts, ria coasts, and estuarine coasts. However, among the given options, a raised beach best represents a coastline of emergence.
Swali 2 Ripoti
Urban type of settlement is best described as
Maelezo ya Majibu
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.
Swali 3 Ripoti
The world's greatest gold producer is
Maelezo ya Majibu
After a temporary set back in 2021 due to a sharp decline in output, Ghana has reclaimed its position as the top Gold producer
Swali 4 Ripoti
Barchan dunes move
Maelezo ya Majibu
A barchan is a cresentic or moon-shaped structure. A barchan is formed when an obstacle like rocks impedes or prevents the movement of wind
Swali 5 Ripoti
Rocks are said to be crystalline when the atoms forming them are
Maelezo ya Majibu
Crystalline rocks are rocks that;
-do not contain fossils
-do not occur in layers i.e they are non-stratified
Swali 6 Ripoti
Africa has the largest potential reserve of hydro-electric power in the world because
Maelezo ya Majibu
It is of no doubt that Africa has the highest potential reserves of hydro-electric power because it is surrounded by large oceans.
Swali 7 Ripoti
A slope is said to be even when the contours are
Maelezo ya Majibu
A slope is said to be even when the contours are **equally placed**. This means that the contours are evenly spaced apart from each other. When the contours are evenly spaced, it indicates that the slope of the land is relatively consistent throughout the area. Imagine looking at a map or a cross-section of a hill or mountain. Contours are the lines on the map that connect points of the same elevation. They give us a visual representation of how steep or gentle the slope is at any given point. When the contours are evenly spaced, it means that the difference in elevation between each contour line is consistent. This indicates that the slope is gradual and not too steep. For example, if we have contour lines that are evenly spaced apart by 10 meters, it means that the slope of the land is changing by approximately 10 meters in height with each contour line. On the other hand, if the contours are irregularly spaced, it means that the slope is varying more dramatically. This can indicate areas of steep cliffs or sudden changes in elevation. In summary, an even slope is characterized by **equally placed** contours, indicating a gradual and consistent change in elevation.
Swali 8 Ripoti
Great Britain and Germany are trading partners of west African countries from
Maelezo ya Majibu
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.
Swali 9 Ripoti
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
Maelezo ya Majibu
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.
Swali 10 Ripoti
Which of the following is not true of the North Atlantic sea route?
Maelezo ya Majibu
The North Atlantic sea route is the busiest sea route in the world. It links North America with Europe and Nigeria with Western Europe. Goods carried on this route do not include graius.
Swali 11 Ripoti
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\)?
Maelezo ya Majibu
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**.
Swali 12 Ripoti
The broad-leafed evergreen and dense equatorial forest of the Amazon basin is called
Maelezo ya Majibu
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.
Swali 13 Ripoti
Buying and selling of goods and services within a country is termed as
Maelezo ya Majibu
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.
Swali 14 Ripoti
The sun is vertically overhead at the tropic of Caprison in
Maelezo ya Majibu
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.
Swali 15 Ripoti
Which of the following is associated with savanna vegetation?
Maelezo ya Majibu
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
Swali 16 Ripoti
"An open forest with evergreen, thick leathery leaves and woody stems with deep roots" is known as
Maelezo ya Majibu
Mediterranean vegetation consists largely of broad-leaved evergreen shrubs having woody stems with thick roots.
Swali 17 Ripoti
Which of the following is not correct about the great circle?
Maelezo ya Majibu
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.
Swali 18 Ripoti
Which of the following is not a problem militating against political and economic integration in West Africa?
Maelezo ya Majibu
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.
Swali 19 Ripoti
Soil erosion by action of rain can be caused y all the following except
Maelezo ya Majibu
Aridity is a long term lack of rainfall or moisture. Soil erosion cannot take place in an srid area.
Swali 20 Ripoti
Which of the following rocks is organically formed?
Maelezo ya Majibu
Shale rocks are made of clay-sized particles and have a laminated appearance. They are a type of organica sedimentary rock.
Swali 21 Ripoti
When weathering occurs on hill slopes, rock debris usually pile up at the bottom of the hill slope to form
Maelezo ya Majibu
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.
Swali 22 Ripoti
Water vapour is turned into water droplets by the process of
Maelezo ya Majibu
Water vapour is turned into water droplets by the process of **condensation**. Condensation occurs when water vapor, which is in the gaseous state, comes into contact with a cool surface or cool air. When the temperature of the water vapor decreases, the water molecules slow down and move closer together. This causes the water vapor to transform into liquid water, forming water droplets. To understand this process better, think of a glass of cold water on a warm day. As the warm air comes into contact with the cold surface of the glass, the water vapor in the air loses heat energy and condenses into water droplets on the outside of the glass. This is why you observe water droplets forming on the glass. Similarly, when warm, moist air rises and comes into contact with cooler air in the atmosphere, or when it encounters cool surfaces such as windows, mirrors, or grass in the early morning, condensation occurs, and water droplets are formed. In summary, condensation is the process where water vapor changes from a gaseous state to a liquid state by cooling down, resulting in the formation of water droplets.
Swali 23 Ripoti
Under the Greek system of climate classification, the world is divided into
Maelezo ya Majibu
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.
Swali 24 Ripoti
The difference in time between two longitudes is approximately
Maelezo ya Majibu
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
Swali 25 Ripoti
The major crop grown in the El juf Basin of Mali is
Maelezo ya Majibu
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.
Swali 26 Ripoti
The coastal regions of Sierra Leone record an annual rainfall of over
Maelezo ya Majibu
The annual rainfall in sierra leone coastal regions is over 4,800m, which makes it the wettest country in West Africa
Swali 27 Ripoti
Which of the following criteria is used to classify settlements into rural or urban?
Maelezo ya Majibu
The criteria used to classify settlements into rural or urban are: 1. **Function:** This refers to the activities and services that are available within the settlement. In urban settlements, there tends to be a larger variety of economic, educational, and recreational services. These can include industries, offices, schools, hospitals, shopping centers, and entertainment facilities. In contrast, rural settlements mostly have agricultural activities as their main function, with limited services and amenities. 2. **Site:** Site refers to the physical characteristics of the settlement, including its natural features and topography. Urban settlements are commonly found in locations with favorable geographic conditions such as access to transportation routes, water sources, and fertile land. Rural settlements, on the other hand, are often situated in areas with more agricultural potential, like fertile soil and access to water for irrigation. 3. **Location:** Location refers to the position of the settlement relative to other settlements and urban centers. Urban settlements are usually located in more densely populated areas, with close proximity to other urban areas and transportation networks. They tend to be the economic and administrative centers of a region. Rural settlements, on the other hand, are typically found in more sparsely populated areas, characterized by agricultural or natural landscapes, with greater distances between each settlement. In summary, the three criteria used to classify settlements into rural or urban are function, site, and location. Function relates to the activities and services available, site refers to the physical characteristics of the settlement, and location considers the position in relation to other settlements and urban centers.
Swali 28 Ripoti
Which of the following is a major boost of tourism?
Maelezo ya Majibu
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.
Swali 29 Ripoti
Which of the following landforms is associated with parallel vaulting?
Maelezo ya Majibu
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.
Swali 30 Ripoti
Exports from Mali are most likely to pass through the sea port at
Maelezo ya Majibu
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.
Swali 31 Ripoti
Jos plateau is an example of a
Maelezo ya Majibu
Jos plateau is a Volcanic plateau . It possess volcanic features such as a dome, single vents and clusters of 3-4 cones aligned.
Swali 32 Ripoti
Which of the following represents the correct sequence in which denudation occurs?
Maelezo ya Majibu
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.
Swali 33 Ripoti
The type of energy that is most environmentally friendly is
Maelezo ya Majibu
The most environmentally friendly type of energy is solar energy. Solar energy refers to the energy that is derived from the sun's rays. Here's why solar energy is considered to be the most environmentally friendly option:
1. Renewable: Solar energy is a renewable source of energy. The sun is constantly shining, making solar energy an abundant and inexhaustible resource. As long as the sun exists, we will continue to have solar energy available to us.
2. Zero Emissions: Solar energy produces zero emissions during its operation. Unlike other energy sources like fossil fuels (such as coal or natural gas) that release harmful pollutants and greenhouse gases when burned, solar energy is clean and does not contribute to air pollution or climate change.
3. No Noise Pollution: Solar energy systems operate silently, unlike some other energy sources like thermal or nuclear power plants that can generate noise pollution. This makes solar energy a favorable option, particularly for residential areas.
4. Low Maintenance: Solar panels require minimal maintenance once installed. Regular cleaning to keep them free from dust and debris is usually sufficient. This reduces the need for ongoing maintenance and associated environmental impacts.
5. Modularity and Scalability: Solar energy systems can be easily scaled up or down depending on the energy requirements. They can range from small individual rooftop installations to vast solar farms. This flexibility makes solar energy a versatile option for different settings and energy demands.
6. Local Generation: Solar energy can be generated locally, reducing the need for extensive transmission networks and energy loss during distribution. Local generation can enhance energy independence, reduce reliance on centralized power systems, and result in more resilient and sustainable energy supply.
In conclusion, solar energy is the most environmentally friendly option due to its renewable nature, zero emissions, lack of noise pollution, low maintenance requirements, modularity and scalability, as well as its ability to generate energy locally. It is a sustainable and clean source of energy that has the potential to reduce our carbon footprint and mitigate the impacts of climate change.
Swali 34 Ripoti
Which of the following rocks is produced by the solidification of magna within the earth crust
Maelezo ya Majibu
The rock that is produced by the solidification of magma within the Earth's crust is called **plutonic rock**. Plutonic rocks are also known as intrusive rocks. Magma is molten rock that is found beneath the Earth's surface. When this magma cools down slowly, it solidifies and crystalizes within the Earth's crust, forming plutonic rocks. This slow cooling process allows for the formation of large mineral crystals within the rock. One key characteristic of plutonic rocks is that they have a coarse grain texture. This means that the mineral crystals within the rock are visible to the naked eye. Examples of plutonic rocks include granite, diorite, and gabbro. In contrast, **extrusive rocks** are formed from lava that cools quickly on the Earth's surface. When lava erupts from a volcano and cools rapidly, it forms extrusive rocks. These rocks, such as basalt and pumice, have a fine-grained texture because the fast cooling does not allow for the growth of large mineral crystals. On the other hand, **sedimentary rocks** are formed from the compaction and cementation of sediments (such as sand, silt, and clay) that have been deposited by water, wind, or ice. Sedimentary rocks, like sandstone and limestone, often contain fossils and layers. Lastly, **metamorphic rocks** are formed by the transformation of existing rocks due to high temperature and pressure deep within the Earth's crust. Examples of metamorphic rocks include marble and quartzite. To summarize, plutonic rocks are produced by the slow solidification of magma within the Earth's crust, resulting in coarse-grained rocks with visible mineral crystals.
Swali 35 Ripoti
A line joining all points of equal salinity is an
Maelezo ya Majibu
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.
Swali 36 Ripoti
Which of the following distinguishes rotation from revolution?
Maelezo ya Majibu
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.
Swali 37 Ripoti
Which of the following is not a plantation crop?
Maelezo ya Majibu
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.
Swali 38 Ripoti
One of the features of wind deposition is
Maelezo ya Majibu
Inselberg is formed from the existence of extensive old plateau. It is caused as a result of weathering and remval of weathered materials
Swali 39 Ripoti
The largest ocean in the world is the
Maelezo ya Majibu
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.
Swali 40 Ripoti
Quartz, fieldspar and mica are three principal mineral that can easily be seen in
Maelezo ya Majibu
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.
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