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Tambaya 1 Rahoto
Bayanin Amsa
The high population density in the Nile Valley is best explained by the presence of rich alluvial soil. The Nile River floods annually, depositing nutrient-rich silt along its banks, which creates fertile land perfect for agriculture. This fertile land supports farming, which is the primary means of livelihood for many people in the region. The availability of fertile soil allows for the cultivation of crops such as wheat, barley, and other foodstuffs, supporting a large population by providing food resources and encouraging human settlement. This agricultural productivity attracts people to settle, leading to a higher population density. It is not primarily due to climate, migration from Europe, or oil fields.
Tambaya 2 Rahoto
Which of the following is an effect of rural-urban migration on the source region?
Rural unemployment
Bayanin Amsa
Rural-urban migration refers to the movement of people from rural areas to urban areas in search of better opportunities and living conditions. One of the main effects of this kind of migration is rural depopulation.
Here's why:
In summary, rural depopulation is one of the primary effects of rural-urban migration as it results in a decrease in the population of the rural areas being vacated.
Tambaya 3 Rahoto
Bayanin Amsa
Quartzite, schist, and marble are all examples of metamorphic rocks.
Here's why:
Sedimentary Rocks are formed from the accumulation of sediments, while Igneous Rocks are formed from the cooling and solidification of magma or lava. Volcanic rocks are a subset of igneous rocks that specifically form from lava at the earth's surface. Thus, quartzite, schist, and marble do not fall under these categories.
Tambaya 4 Rahoto
When wet and dry bulb thermometers record the same temperature, it means
Bayanin Amsa
When wet and dry bulb thermometers, which together form a psychrometer, record the same temperature, it indicates that the air is saturated. This means that the air has reached its maximum capacity to hold water vapor, also known as reaching the dew point.
Normally, the wet bulb thermometer, which has a cloth soaked in water wrapped around it, shows a lower temperature than the dry bulb thermometer because evaporation cools it down. However, when the temperatures are the same for both thermometers, no evaporation is taking place. This is because the air cannot accept more water vapor, pointing to a humidity level of 100%, which is known as saturation.
Tambaya 5 Rahoto
Which of the following best accounts for the decline in the importance of rail transport in Africa?
Bayanin Amsa
The decline in the importance of rail transport in Africa can be best explained by the high competition from road transport. Here's why:
Accessibility and Flexibility: Road transport is generally more accessible and flexible compared to railways. Roads are available in most areas of Africa, including rural regions, allowing goods and passengers to reach their destinations directly without requiring transfer between modes of transport.
Cost-Effectiveness: In many cases, road transport can be more cost-effective because it eliminates the need for transferring goods at several points. The initial investment in road infrastructure and vehicles can also be less than maintaining or upgrading railway networks.
Adaptability to Infrastructure Limitations: Many railways in Africa suffer from outdated infrastructure, which can hinder their efficiency and reliability. On the other hand, road transport can easily adapt to newer roads and infrastructures as they are developed.
Length of Transport Routes: Although Africa is a vast continent, many trade routes within countries or regions are more economically feasible with road transport, especially for short to medium distances.
Overall, while other factors such as the low volume of goods and potential retrenchment threats exist, the dominance and rapid improvement in the road transport sector particularly highlight why rail transport has seen a decline in relevance. The flexibility and economic viability of road transport often make it a more attractive choice for businesses and individuals alike.
Tambaya 6 Rahoto
The solar system comprises the sun and
Bayanin Amsa
The solar system is a vast and fascinating system that centers around the Sun, a star that provides light and heat to all the celestial bodies that revolve around it. Understanding what other components make up the solar system is essential for grasping how our cosmic neighborhood operates.
There are eight major planets that orbit around the Sun. These planets, in their order from the closest to the farthest from the Sun, are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Each of these planets varies in size, composition, and distance from the Sun, but they all follow elliptical orbits.
In addition to the eight recognized planets, there are also dwarf planets, such as Pluto. Pluto was previously considered the ninth planet until it was reclassified as a dwarf planet by the International Astronomical Union in 2006 due to updated criteria that define what constitutes a planet.
Besides planets and dwarf planets, the solar system also contains a variety of other celestial bodies. These include moons, which are natural satellites that orbit planets; asteroids, which are small rocky bodies primarily located in the asteroid belt between Mars and Jupiter; and comets, which are icy bodies that have eccentric orbits bringing them close to the Sun occasionally.
In summary, the solar system comprises the Sun and eight planets, alongside other celestial bodies such as dwarf planets, moons, asteroids, and comets. Understanding the composition of the solar system helps us appreciate the complexity and grandeur of our cosmic environment.
Tambaya 7 Rahoto
Which of the following lines of latitudes divides the earth into two hemispheres
Bayanin Amsa
The line of latitude that divides the Earth into two hemispheres is the Equator. The Equator is an imaginary line that is drawn around the middle of the Earth. It is equidistant from the North and South Poles, and it is located at 0 degrees latitude.
Because it sits exactly halfway between the poles, the Equator splits the Earth into two equal parts: the Northern Hemisphere and the Southern Hemisphere. The land and water areas located to the north of the Equator make up the Northern Hemisphere, while those located to the south comprise the Southern Hemisphere.
The importance of the Equator is not just in the division of hemispheres; it also plays a crucial role in climate. Regions located near the Equator typically experience a tropical climate with minimal temperature variations year-round.
In contrast, lines like the Tropic of Cancer and the Tropic of Capricorn are found north and south of the Equator, respectively, and they define the limits of the tropical zone. The Antarctic Circle is situated further south and marks a different climatic boundary.
Tambaya 8 Rahoto
Which of the following is not an element of climate?
Bayanin Amsa
To determine which of the listed items is not an element of climate, we need to understand what elements constitute climate. **Climate** refers to the average weather conditions of a place over a long period, typically 30 years or more. The primary elements that define climate include **temperature**, **precipitation**, **humidity**, **wind**, and **air pressure**. Let's go through the choices given:
Precipitation: This is an important element of climate as it refers to any form of moisture that falls from the atmosphere to the earth's surface, such as rain, snow, or sleet.
Air pressure: This is a crucial element of climate because it influences wind patterns and weather systems such as cyclones and anticyclones.
Altitude: This is not an element of climate; rather, it is a geographic factor that influences climate. As you go higher in altitude, temperatures typically decrease, which can affect the climate of a region, but altitude itself is not a climatic element.
Temperature: This is a fundamental element of climate, affecting the average warmth or coldness of a place over time.
Therefore, **altitude** is not an element of climate, but a factor that can influence the other elements like **temperature** and **precipitation**.
Tambaya 9 Rahoto
A conurbation can best be described as
Bayanin Amsa
A conurbation is a term used to describe a group of cities, towns, or urban areas that have merged together to form a single urban entity, while still retaining their individual identities.
Tambaya 10 Rahoto
If the local time at a place X is 12.00 noon when the G.M.T is 5.00a.m then X is located on longitude
Bayanin Amsa
To determine the longitude of place X, we need to understand the relationship between time and longitude. The Earth is divided into 360 degrees of longitude, and it completes one full rotation (360 degrees) in 24 hours. Therefore, for every hour, the Earth rotates 15 degrees of longitude.
The given information is this:
The difference in time between GMT and the local time at place X is 7 hours (from 5:00 a.m. to 12:00 noon).
Calculation:
Now, we need to determine whether place X is east or west of the Prime Meridian (0° longitude, the reference line for GMT).
- Since the local time at place X is ahead of GMT (12:00 noon compared to 5:00 a.m.), it means X is east of the Prime Meridian.
Thus, place X is located on 105°E.
Tambaya 11 Rahoto
A mercury barometer is used for measuring
Bayanin Amsa
A mercury barometer is used for measuring atmospheric pressure.
Here's a simple explanation:
A barometer is an instrument designed to measure the pressure exerted by the atmosphere. The atmosphere exerts pressure because of the mass of air above the Earth, and this pressure changes as you move up and down in altitude or due to weather systems.
A mercury barometer consists of a long glass tube closed at one end and filled with mercury. The open end of the tube is placed in a bowl of mercury, called a reservoir. The pressure from the air pushing down on the mercury in the bowl forces the mercury up the tube. When the atmospheric pressure is high, the mercury in the tube rises, and when the atmospheric pressure is low, the mercury level falls.
Thus, by measuring the height of the mercury column in the tube, we can determine the atmospheric pressure. In summary, a mercury barometer provides a way to directly observe changes in the atmospheric pressure.
Tambaya 12 Rahoto
The angular distance of a point on the Earth's surface measured in degrees from the centre of the Earth east or west of the Greenwich Meridian is known as
Bayanin Amsa
The angular distance of a point on the Earth's surface measured in degrees from the centre of the Earth east or west of the Greenwich Meridian is known as longitude.
Let's break this down to make it simple:
Longitude lines are imaginary lines that run from the North Pole to the South Pole. The most important line is the Greenwich Meridian, also called the Prime Meridian, which is the reference point for measuring longitude. It is designated as zero degrees (0°) longitude. When you measure how far east or west a point is from the Prime Meridian, you are measuring the longitude.
This is different from latitude, which measures the distance north or south of the Equator. Longitude lines meet at the poles, whereas latitude lines are parallel to each other.
Overall, longitude helps us determine the precise location of a place on Earth by specifying how far east or west it is from the Prime Meridian.
Tambaya 13 Rahoto
Nigeria is located between longitude
Bayanin Amsa
Nigeria, a country located in West Africa, is situated between the longitudes of 3°E and 15°E. Longitude lines are imaginary vertical lines that run across the Earth's surface from the North Pole to the South Pole. These lines help in determining the east-west position of a particular location on earth. By being positioned between 3°E and 15°E, Nigeria stretches from slightly east of the Prime Meridian, which is 0°, to 15° eastward. This geographical positioning affects several aspects like climate and time zone, making it an important detail in understanding the country's location globally.
Tambaya 14 Rahoto
A geyser is best described as/an
Bayanin Amsa
A geyser is best described as a fountain of superheated steam. This natural phenomenon occurs when water that is trapped beneath the Earth's surface is heated by geothermal activity, such as volcanic activity, deep underground. As the water is heated, it turns into steam and builds up pressure. This pressure eventually forces the steam and hot water to be expelled violently from the ground in a dramatic outburst, creating a fountain-like effect.
Let's break this down a bit more:
This distinct eruption is what characterizes a geyser and differentiates it from other geothermal features like hot springs or thermal pools, which do not erupt but simply release heat gradually into the water.
Tambaya 15 Rahoto
Which of the following settlement type is the largest?
Bayanin Amsa
In the context of settlement types and their sizes, the largest is a megalopolis.
Let me explain this in simple terms:
In summary, of all the settlement types listed, a megalopolis is the largest as it comprises multiple, even significant urban areas that have expanded to form a vast, continuous area.
Tambaya 16 Rahoto
A major problem in agricultural development in Nigeria is
Bayanin Amsa
One of the major problems in agricultural development in Nigeria is the insufficient storage facilities.
The agricultural sector in Nigeria often faces difficulties after crops are harvested. Poor storage facilities mean that a substantial portion of the agricultural produce is lost due to spoilage, pests, or damage. This is a significant challenge because:
Improving storage facilities would provide farmers with the ability to manage their production better, ensuring a more consistent supply of agricultural products and contributing significantly to the development of agriculture in Nigeria.
Tambaya 17 Rahoto
Africa's largest timber producer is
Bayanin Amsa
In terms of the largest timber producers in Africa, it is important to understand which nation has significant timber resources and an established forestry industry. Zaire, known today as the Democratic Republic of Congo (DRC), is recognized as the largest timber producer in Africa.
The Democratic Republic of Congo has extensive forest coverage, including parts of the Congo Basin, which is the second-largest rainforest in the world after the Amazon. This vast expanse of forestland provides an abundance of timber resources. The country's forestry industry has developed around this natural resource, contributing significantly to its economy.
Other countries like Ghana and Nigeria also have substantial forests and timber industries, but they do not match the scale of Zaire. Malawi, on the other hand, is less known for timber production compared to these countries.
In summary, considering its massive forest expanse and established timber industry, Zaire (the Democratic Republic of Congo) stands out as Africa's largest timber producer.
Tambaya 18 Rahoto
The longest river in Africa is River
Bayanin Amsa
The longest river in Africa is the Nile River. The Nile River is renowned for its extraordinary length, stretching approximately 6,650 kilometers (about 4,130 miles). This majestic river traverses several countries in northeastern Africa, including Uganda, Sudan, and primarily Egypt. Its extensive reach makes it the longest river not only in Africa but also in the world, although there is some debate with the Amazon River.
The Nile plays a crucial role in the cultures and economies of the nations it flows through. In ancient Egypt, for instance, it was vital for agriculture, enabling civilizations to thrive by providing a reliable source of water and fertile land for farming. Today, the Nile continues to be a lifeline for millions of people, supporting agriculture, transport, and providing drinking water.
In contrast, the other rivers mentioned, such as the Zambezi, Senegal, and Congo, though significant in their own right, are shorter and do not match the extraordinary length of the Nile River.
Tambaya 19 Rahoto
The world's busiest shipping routes are on the
Bayanin Amsa
The world's busiest shipping routes are found on the Atlantic Ocean. This ocean plays a crucial role in global trade and transportation due to several factors:
While other oceans like the Pacific and Indian Oceans are also important for global trade, the Atlantic Ocean remains particularly significant due to its connectivity and the economic powerhouses it links. The Antarctic Circle is not a major route due to its harsh environmental conditions and minimal human inhabitation, which reduces commercial sea traffic in that region.
Tambaya 20 Rahoto
Bayanin Amsa
The term over-population is best defined as the situation where the population exceeds available resources. This means that the number of people in an area is greater than the resources available to sustain them, such as food, water, shelter, and health care. It can lead to various problems including poverty, environmental degradation, and a strain on infrastructure. Over-population occurs when the existing resources cannot meet the needs of the people, resulting in hardship and reduced quality of life.
In contrast, having a birth rate equal to the death rate implies a stable population over time, not necessarily over-population. Increasing birth rate and decreasing infant mortality can contribute to population growth, but they do not solely define over-population. Finally, high population density refers to a large number of people living in a small area, which could lead to over-population if resources are insufficient, but high density alone does not equate to over-population.
Tambaya 21 Rahoto
Which of the following dams in Africa provides both irrigation water and hydro-electricity?
Bayanin Amsa
The Akosombo Dam in Ghana provides both irrigation water and hydro-electricity. The dam was built on the Volta River and provides hydro-electric power and irrigation water for agriculture.
Tambaya 22 Rahoto
Sunrise and sunset are not proofs that the Earth is spherical in shape, as they can be observed on other celestial bodies as well.
Bayanin Amsa
Mercury and Venus are the two planets that lie between the Sun and Earth.
Tambaya 23 Rahoto
On June 21st, when the sun is overhead at the Tropic of Cancer,places in the Northern Hemisphere experience
Bayanin Amsa
On June 21st, the sun is overhead at the Tropic of Cancer, marking the Summer Solstice in the Northern Hemisphere. This is the point in the year when the Northern Hemisphere is tilted closest to the sun. As a result, places in the Northern Hemisphere experience their longest day and shortest night. This means that there is more daylight compared to nighttime.
To summarize, on this date, locations in the Northern Hemisphere will experience a longer day and a shorter night. This is due to the tilt of the Earth's axis, which maximizes sunlight exposure to these regions.
Tambaya 24 Rahoto
The ocean that connects Europe and America is the
Bayanin Amsa
The ocean that connects Europe and America is the Atlantic Ocean.
Here's a simple explanation: The Atlantic Ocean is a massive body of water that lies between the continents of Europe and Africa to the east and the Americas to the west. This ocean is one of the world's five major oceans and is the second largest after the Pacific Ocean. Historically, the Atlantic Ocean has been significantly important as a route for ships traveling between Europe and the Americas, playing a crucial role in exploration, commerce, and cultural exchanges.
Tambaya 25 Rahoto
An example of an organically formed sedimentary rock is
Bayanin Amsa
An example of an organically formed sedimentary rock is coal.
Coal is formed from the remains of dead plants that accumulated in ancient swamps and wetlands. Over millions of years, these plant materials were buried under layers of sediment. As more layers built up on top, the increased pressure and heat transformed the plant remains into coal. The process involved is known as biochemical sedimentation, where organic materials are compacted and altered to form rock.
This is in contrast to the other options:
To summarize, coal is the organically formed sedimentary rock among these options because it originates from ancient plant material that has undergone compaction and chemical transformation over time.
Tambaya 26 Rahoto
Bayanin Amsa
Life expectancy refers to the average age at which people die. It is a statistical measure that estimates the average number of years a person is expected to live based on current mortality rates. Life expectancy can vary significantly based on various factors such as geography, lifestyle, healthcare quality, and socioeconomic status. It serves as an important indicator of a population's overall health and quality of life.
Tambaya 27 Rahoto
All the following are advantages of the bush fallowing system in West Africa except that it
Bayanin Amsa
The bush fallowing system in West Africa is not very economical in the use of land. Bush fallowing involves leaving land fallow for several years to regain its fertility, which can lead to inefficient use of land.
Tambaya 28 Rahoto
In which part of the atmosphere does rain clouds develop?
Bayanin Amsa
Rain clouds most commonly develop in the troposphere. The troposphere is the lowest layer of Earth's atmosphere and extends from the Earth's surface up to about 8 to 15 kilometers (5 to 9 miles) above sea level, depending on your location.
This layer is where we experience weather, including rain, thunderstorms, and clouds. The reason for this is that the troposphere contains most of the atmosphere's water vapor, which is essential for cloud formation and precipitation.
In this layer, the air becomes cooler as you go higher, which allows the moist air to rise, cool, and condense to form clouds. When these clouds get heavy enough with condensed water droplets, they release the water in the form of rain.
The layers above the troposphere, such as the stratosphere, do not usually have the right conditions for rain cloud formation because they lack sufficient moisture and their temperatures are not typically conducive to the processes needed for cloud formation.
Tambaya 29 Rahoto
The development of hydro-electric power in Nigeria is least affected by the
Bayanin Amsa
The development of hydro-electric power in Nigeria is least affected by the availability of suitable sites for dams. While suitable sites are necessary for building dams, other factors such as a regular supply of water and high mountains are more critical for hydro-electric power development.
Tambaya 30 Rahoto
The outer layer of the earth is called the
Bayanin Amsa
The outer layer of the Earth is called the crust. Let's understand this in simple terms:
The Earth is made up of several layers. Imagine the Earth like an onion with different layers, with each layer varying in composition and physical properties. The outermost of these layers is the crust.
The crust is similar to a thin shell around the Earth. It is very thin compared to the other layers and can be thought of as the Earth's skin. It is made up of solid rocks and minerals and is where we live and see landscapes, mountains, and oceans.
Below the crust is the mantle, which is much thicker and composed primarily of semi-solid rock. Therefore, when talking about the outermost layer, we refer specifically to the Earth's crust.
Tambaya 31 Rahoto
The innermost section of the Earth is the
Bayanin Amsa
The innermost section of the Earth is the core. The Earth is composed of several layers, starting from the surface and moving inward. These layers, from the outside to the inside, are the crust, mantle, outer core, and inner core.
1. Crust: This is the outermost layer of the Earth. It is very thin compared to the other layers and is where we live. The crust is made up of solid rocks and minerals.
2. Mantle: Located beneath the crust, the mantle is composed of semi-solid rock that flows slowly. It is the largest layer of the Earth by volume.
3. Core: The core itself is divided into two parts: the outer core and the inner core. The outer core is made of molten, liquid metal, while the inner core is made of solid metal, primarily iron and nickel. The core is the hottest section of the Earth, with extremely high temperatures and pressures. It is situated at the center of the Earth and provides heat that helps power the movement of tectonic plates and causes volcanic activity.
Therefore, when we refer to the innermost section of the Earth, we are specifically talking about the core, and more accurately, the inner core.
Tambaya 32 Rahoto
Copper is an important raw material in the
Bayanin Amsa
Copper is an important raw material in the electrical industry. This is because copper is an excellent conductor of electricity, which means it allows electrical current to flow through it easily with minimal resistance. This property makes copper ideal for use in electrical wiring, motors, transformers, and other electrical components. Additionally, copper is highly durable, resistant to corrosion, and versatile, which further enhances its usefulness in electrical applications. The electrical industry relies heavily on copper to ensure reliable and efficient power transmission.
Tambaya 33 Rahoto
The process of head ward erosion will lead to the formation of
Bayanin Amsa
Let's understand the term **headward erosion**. **Headward erosion** refers to the process where a river or stream erodes its source region, causing the stream's origin to move backward away from the direction of water flow. This process can have several impacts and can lead to the formation of certain landforms.
Among the options provided, **headward erosion** is most commonly associated with the formation of **river capture**. When **headward erosion** continues over time, it can cause one river to extend its course and intersect with a neighboring river, capturing its flow. This event is known as **river capture** or **stream piracy**. Essentially, the rapid erosion at the river's source enables it to cut through the drainage divide and capture the headwaters of another river.
Let's briefly see why the other options are less relevant to **headward erosion**:
Therefore, the process of **headward erosion** most directly leads to the formation of **river capture**.
Tambaya 34 Rahoto
The most common mode of transportation in Africa is
Bayanin Amsa
The **most common mode of transportation in Africa** is **road transportation**. This includes vehicles like cars, buses, and motorcycles that travel on roads and highways. Road transportation is widespread because it is **versatile** and can reach many rural and urban areas that are not accessible by other means of transportation. Roads are often less expensive to build and maintain compared to infrastructure needed for other modes such as railways or airports.
Despite the challenges such as limited road networks and varying road conditions in some regions, **road transportation remains the backbone** of both passenger and freight transport due to its **flexibility** and **accessibility**. In many African countries, it is the most relied upon form of transport connecting people to markets, healthcare facilities, schools, and places of employment.
Tambaya 35 Rahoto
All the following are members of the ECOWAS except
Bayanin Amsa
The Economic Community of West African States (ECOWAS) is a regional political and economic union of countries located in West Africa. Its objective is to promote economic integration across the region. The official member states of ECOWAS include countries in West Africa.
Among the options provided:
Cameroun, however, is not a member of ECOWAS. While it is geographically close to West Africa, it is primarily considered part of Central Africa, and it is a member of the Central African community organization instead.
Tambaya 36 Rahoto
The Gezira scheme and the Manaquil Extension are famous for the cultivation of
Bayanin Amsa
The **Gezira Scheme** and the **Manaquil Extension** are famous for the cultivation of **cotton**. These agricultural projects are located in **Sudan** and are among the largest irrigation projects in the world dedicated to agriculture.
The Gezira Scheme utilizes the waters of the **Blue Nile** to irrigate the land, making it suitable for growing cash crops. The scheme's infrastructure, including an extensive network of canals and ditches, supports the broad-scale cultivation of cotton. Similarly, the Manaquil Extension enhanced the irrigation reach, further bolstering cotton agriculture.
**Cotton** is highly suitable for growth in the hot climate of Sudan, especially under irrigation, as it requires a long growing season with plenty of sunshine and water. This makes it an ideal crop for the region, contributing significantly to Sudan's economy through both local use and export. Additionally, cotton plays a crucial role in the livelihood of many farmers in the region, being a major source of income.
Cultivating cotton in **Gezira** and **Manaquil** not only supports the textile industry but also generates employment for thousands of people engaged in farming, processing, and trade.
Tambaya 37 Rahoto
All the following are causes of mechanical weathering except
Bayanin Amsa
Mechanical weathering is the process of breaking down rocks into smaller pieces without changing their chemical composition. There are several causes of mechanical weathering, but not all processes that affect rocks are related to mechanical weathering.
The options listed include:
Temperature changes: This is a cause of mechanical weathering. When rocks are exposed to fluctuating temperatures, they expand when it's hot and contract when it's cold. Over time, these repeated expansions and contractions can cause the rocks to crack and break apart.
Frost action: Also known as freeze-thaw weathering, this is another form of mechanical weathering. Water can seep into cracks in the rocks, and as temperatures drop, the water freezes and expands. This expansion exerts pressure on the rock, gradually breaking it apart.
Alternate wetting and drying: This causes mechanical weathering by changing the volume of clay minerals found in some rocks. When these rocks get wet, the clay swells, and when dry, it contracts. This constant expansion and contraction lead to mechanical breakdown.
Rain action: This is not primarily a cause of mechanical weathering. While rain can contribute to weathering processes, such as chemical weathering where it reacts with minerals in rocks to form new compounds, its primary role in mechanical weathering is minimal compared to other factors.
Therefore, among the options provided, rain action is the one that is not a direct cause of mechanical weathering.
Tambaya 38 Rahoto
When the sun is directly overhead at the tropic of Capricorn (23 %, °) on 22nd December, the Northern Hemisphere experiences it's
Bayanin Amsa
On 22nd December, the sun is directly overhead the Tropic of Capricorn in the Southern Hemisphere. This marks a significant event in both hemispheres.
In the Northern Hemisphere, this date corresponds to the **winter solstice**. Here's why:
The Earth is tilted on its axis by about 23.5 degrees. This tilt is responsible for the changing seasons. Throughout the year, different parts of the Earth receive varying amounts of sunlight depending on the planet's position in its orbit around the Sun.
During the winter solstice, the Northern Hemisphere is tilted farthest away from the Sun. As a result, it experiences the shortest day and the longest night of the year. The **winter solstice** marks the official start of winter in the Northern Hemisphere.
Thus, when the sun is directly overhead at the Tropic of Capricorn on 22nd December, the Northern Hemisphere experiences its **winter solstice**.
Tambaya 39 Rahoto
The major source of power for most terrestrial ecosystems is
Bayanin Amsa
The major source of power for most terrestrial ecosystems is solar energy.
Let me explain why:
Solar energy is the energy that comes from the sun. It is critical for life on Earth as it powers the process of photosynthesis, which is used by plants, algae, and some bacteria to convert light energy into chemical energy. During photosynthesis, these organisms take in carbon dioxide from the air and water from the soil, and with the help of sunlight, they produce glucose and oxygen. This process provides the necessary energy and organic material to support life.
Here is why it is important:
In comparison, other energy sources like geothermal energy, nuclear power, and hydroelectric power play relatively minor roles in terrestrial ecosystems. These energies are not as directly involved in powering the basic life-sustaining processes as solar energy is. Therefore, it is clear that solar energy is the predominant power source for life on land.
Tambaya 40 Rahoto
A large expanse of low, level land, formed due to an uplift of part of the sea floor bordering a continent is called
Bayanin Amsa
A **coastal plain** is a **large expanse of low, level land** that is formed due to an **uplift of part of the sea floor bordering a continent**. Essentially, it is an area where the land is relatively flat and is located near the coast.
This type of landform often occurs due to geological activities over time where the sea floor is pushed upwards, resulting in a broad, flat land surface extending inland from the coast. Coastal plains are typically characterized by their flat terrain and proximity to the ocean, making them influenced by marine conditions.
In summary, **a coastal plain is the result of the elevation of a portion of the sea floor adjacent to the continent**. It is characterized by its flatness and location near the sea, distinguishing it from other types of plains such as deltaic, outwash, or flood plains which have different formation processes and characteristics.
Za ka so ka ci gaba da wannan aikin?