WAEC SSCE - Geography - 2020

A temporary salt lake found in arid and semi-arid area is also called

Detalles de la respuesta

Which of the following is not a proof of the spherical shape of the Earth?

Detalles de la respuesta

Coastal submergence is not a proof of the spherical shape of the Earth. Coastal submergence refers to the phenomenon where the level of the sea rises and covers parts of the coastal areas, due to factors such as tides and ocean currents. This is not directly related to the shape of the Earth, as the same coastal submergence can occur on a flat or any other shaped surface. To prove that the Earth is spherical, evidence such as the ship's visibility (where the hull of a ship disappears from view before the mast), the circular horizon, and the lunar eclipse (where the Earth's shadow on the moon is curved) are more appropriate.

Which of the following are process of physical weathering? I. Frost action II. Hydrolysis III. Oxidation IV. Temperature Changes 

Detalles de la respuesta

The difference between the hottest and coldest months of a place is the

Detalles de la respuesta

The annual range temperature is the difference between the hottest and coldest months of a place. Imagine you have a thermometer that measures the temperature every month. The highest temperature that the thermometer recorded is the hottest month, and the lowest temperature is the coldest month. The difference between these two temperatures is the annual range temperature. It gives you an idea of how much the temperature changes throughout the year in a specific place.

The day in which the length of day and night are equal everywhere on Earth is 

Detalles de la respuesta

The day in which the length of day and night are equal everywhere on Earth is called the equinox. There are two equinoxes in a year: the March or Vernal Equinox and the September or Autumnal Equinox. During the equinox, the tilt of the Earth's axis is not pointed towards or away from the sun, resulting in equal amounts of daylight and darkness at all latitudes across the Earth. This happens because the Earth's axis is tilted by 23.5 degrees and as it orbits around the sun, different parts of the Earth receive varying amounts of sunlight. Therefore, the correct option is 21st March (March Equinox) and 22nd September (September Equinox) when the day and night are approximately equal in duration all over the world.

The main difference between town and village is that

Detalles de la respuesta

What is the approximate distance from Obasa to Oju as the crowflies?

Detalles de la respuesta

One characteristic feature of intensive farming is that, it is practised in urban centres where

Detalles de la respuesta

Intensive farming is characterized by the practice of maximizing agricultural yield by using a small amount of land and a high input of labor, capital, and technology. One common location for intensive farming is in urban centers where the human population is high. This is because there is a greater demand for food, and urban areas often have limited space for traditional farming practices. In addition, transportation costs are reduced, and fresh produce can be delivered quickly to nearby markets. Therefore, intensive farming can be an effective way to meet the food needs of urban populations.

The countour interval on the map is

Detalles de la respuesta

The contour interval on a map represents the difference in elevation between adjacent contour lines. To determine the contour interval on the map, you can look for two adjacent contour lines and subtract their elevations. For example, if there are two contour lines on the map, one at 200m and the other at 150m, then the contour interval would be 50m (200m - 150m = 50m). This means that each contour line on the map represents a change in elevation of 50m. So, to answer the question, you need to look at the map and find two adjacent contour lines, and subtract their elevations to determine the contour interval.

The hinterland of a port is

Detalles de la respuesta

The hinterland of a port refers to the area that is served by the port. This area includes the surrounding land and communities that rely on the port for their trade and transportation needs. It can extend quite far beyond the immediate vicinity of the port itself, as goods may be transported to and from the port via various modes of transportation such as trucks, trains, and barges. Essentially, the hinterland is the region that depends on the port for access to global markets and the movement of goods.

Town A is located on longitude 15°E, while town B is located on longitude 45°E. If the local time in town A is 6.00am, what will be the local time in town B? 

Detalles de la respuesta

The Earth is divided into 24 equal time zones, with each time zone spanning 15 degrees of longitude. The time in each time zone is based on the mean solar time at the central meridian of that time zone. The central meridian of a time zone is defined as the longitude that is exactly in the middle of the time zone. In this case, town A is located on longitude 15°E and town B is located on longitude 45°E. The difference in longitude between the two towns is 30 degrees (45°E - 15°E = 30°). Since each time zone spans 15 degrees of longitude and the difference in longitude between the two towns is 30 degrees, the time difference between the two towns is 2 hours (30° / 15° = 2). Therefore, if the local time in town A is 6.00am, the local time in town B will be 8.00am (6.00am + 2 hours = 8.00am).

The major problem facing the railway transportation compared to road transportation is

Detalles de la respuesta

The major problem facing railway transportation compared to road transportation is the lack of flexibility. Unlike roads, which can be built and adjusted to suit different types of vehicles and traffic patterns, railways are fixed and require specialized infrastructure such as tracks, signals, and stations. This lack of flexibility can make it difficult for railways to adapt to changes in demand or to serve areas that are not directly on their route. In contrast, roads can be easily built or expanded to connect new areas, and vehicles can take different routes to reach their destinations. Additionally, road transportation is often seen as more convenient and accessible for individuals and businesses, as it allows for point-to-point travel and the ability to transport smaller loads. Railway transportation, on the other hand, is better suited for long-distance travel and heavy freight shipments. Therefore, the lack of flexibility of railway transportation is the main challenge facing it compared to road transportation.

Which of the following economic activities makes use of land and sea breeze?

Detalles de la respuesta

Which of the following features promote the development of nucleated settlement?

Detalles de la respuesta

Which of the following is a process of river transportation?

Detalles de la respuesta

Suspension is a process of river transportation. Suspension occurs when small particles such as silt and clay are carried along with the river flow. These particles are suspended in the water and move along with the current. The water can carry these particles for long distances, even across entire continents. This process is facilitated by the speed and force of the river flow. When the water moves fast enough, it can lift and carry the small particles along with it. As the river slows down, the particles start to settle and may eventually be deposited on the riverbed or along the riverbanks. Other processes of river transportation include attrition, which is the gradual wearing down of rocks and boulders as they collide with each other and the riverbed, and abrasion, which is the erosion of the riverbed by the particles being carried in the water. Deflation, on the other hand, is a process that occurs when the wind blows away loose sediment, such as sand or silt, from the riverbanks or riverbed.

Petroleum is usually found in

Detalles de la respuesta

Petroleum is usually found in sedimentary rocks. Sedimentary rocks are formed from the accumulation and compression of sediment, such as sand, mud, and organic matter, over time. Over millions of years, the organic matter in these sediments can be transformed into petroleum through a process called diagenesis. Petroleum is often found in rock formations beneath the Earth's surface, such as sandstone or limestone, which are types of sedimentary rock. The petroleum can be extracted from these rocks through drilling. In summary, petroleum is usually found in sedimentary rocks, which are formed from the accumulation of sediment and organic matter over time.

The annual range of temperature is

Detalles de la respuesta

Which of the following problems hinder international trade? I. Political instability II. Low tariffs III. Inadequate foreign exchange IV. Strained relations

Detalles de la respuesta

International trade can be hindered by various factors. Out of the given options, the problems that hinder international trade are political instability, inadequate foreign exchange, and strained relations. Political instability refers to a situation where a country experiences frequent changes in government, civil unrest, or violent conflicts. This can negatively impact international trade as it creates uncertainty and risks for businesses, leading to a decrease in investment and economic growth. Inadequate foreign exchange occurs when a country doesn't have enough foreign currency to pay for imports or service its foreign debt. This can result in a shortage of essential goods and services, a decrease in investment, and a decrease in economic growth. Strained relations between countries can also hinder international trade. This can occur due to various reasons such as political conflicts, trade disputes, or diplomatic tensions. When countries have strained relations, it can lead to trade barriers, reduced investments, and a decrease in economic growth. Low tariffs, on the other hand, do not necessarily hinder international trade. In fact, they can encourage international trade as they make imported goods cheaper, leading to an increase in demand for foreign goods. Therefore, the correct answer is option D - I, III and IV only.

A seaport can be sited in all the following settlements except 

Detalles de la respuesta

A seaport can only be sited in settlements near the ocean or a large body of water that is deep enough for ships to safely dock. Out of the settlements listed, Bama is not near any ocean or large body of water and therefore cannot have a seaport. The other settlements, Kalu, Musa, and Obasa, may potentially have a seaport if they are near an ocean or large body of water.

Calculate the distance between town Y which is on latitude 40° N and town Z which is on latitude 10°S

Detalles de la respuesta

 A dominant factor that explains the establishment of industries in some rural areas of Tropical Africa is

Detalles de la respuesta

The establishment of industries in some rural areas of Tropical Africa can be explained by the development of rural areas. This means that efforts were made to improve the infrastructure, such as roads, electricity, and water supply, and to create favorable conditions for economic activity in these areas. This helped attract investment and create job opportunities in rural areas, which in turn encouraged the growth of industries. In this way, the development of rural areas played a key role in establishing industries in these areas.

The bearing of Danki from Oju is

Detalles de la respuesta

The scale of the map is

Detalles de la respuesta

Which of the following are characteristics of manufacturing induitries in Tropical Africa? I. Export-oriented II. Labour intensive III. Consumer-oriented IV. Diversified production

Detalles de la respuesta

A great circle route is used to

Detalles de la respuesta

A great circle route is used to save time and fuel by flying the shortest distance between two points on the surface of the Earth. This route follows the curve of the Earth's surface, which is a sphere, and is the shortest distance between any two points on it. Using a great circle route, airplanes can avoid flying over long distances, such as deserts or oceans, and also avoid flying near the north pole. By taking the shortest distance possible, airlines can save both time and fuel, making their flights more efficient and cost-effective.

The mean temperature from July to December is

Detalles de la respuesta

Which of the following are the benefits of transportation to a country? I. Diffusion of ideas II. Acculturation III. Unemployment IV. Enhanced trade

Detalles de la respuesta

The feature in the south-west of Musa is

Detalles de la respuesta

The mode of transportation which is best used to convey perishable good is

Detalles de la respuesta

The best mode of transportation to convey perishable goods is air transportation. Perishable goods, such as fresh produce or flowers, have a short shelf life and need to be transported quickly to their destination to maintain their quality and freshness. Air transportation is the fastest mode of transportation, allowing perishable goods to reach their destination quickly and efficiently. Air transportation also has the advantage of being able to maintain a consistent temperature throughout the journey, ensuring that the perishable goods are kept at their optimal temperature and reducing the risk of spoilage. While other modes of transportation, such as road and rail, may also be able to transport perishable goods, they are generally slower and may not have the same temperature control capabilities as air transportation. Pipeline transportation, on the other hand, is not suitable for transporting perishable goods as it is typically used for transporting liquids or gases. In summary, air transportation is the best mode of transportation for conveying perishable goods due to its speed and temperature control capabilities, allowing the goods to arrive at their destination quickly and in optimal condition.

The type C of Koppen's climate is the

Detalles de la respuesta

Which climate is characterized by winner rain and summer drought?

Detalles de la respuesta

The climate that is characterized by winter rain and summer drought is the Mediterranean climate. This type of climate is typically found in areas near the Mediterranean Sea, as well as in parts of California, Chile, South Africa, and Australia. In the winter, Mediterranean climates experience cool and wet weather due to the influence of mid-latitude storms. However, in the summer, these regions are affected by a high-pressure system that results in hot and dry weather with very little rainfall. This climate pattern has a significant impact on the vegetation and ecosystems in these regions, as many plants have adapted to survive the long dry summers by becoming dormant or developing drought-resistant characteristics. The Mediterranean climate is also important for agriculture, with many crops such as olives, grapes, and citrus fruits thriving in these conditions.

An example of local craft industry is 

Detalles de la respuesta

A plateau highly eroded by rivers and broken by deep narrow valleys is

Detalles de la respuesta

The height at point P is about

Detalles de la respuesta

Which of the following towns experiences the type of climate represented? 

Detalles de la respuesta

The predominant process of weathering in desert regions is

Detalles de la respuesta

The predominant process of weathering in desert regions is physical weathering. This is because in deserts, the weather is often very hot and dry, with little to no moisture, which limits the activity of biological and chemical processes. Physical weathering is the process by which rocks and other geological materials are broken down into smaller pieces by physical forces such as temperature changes, wind erosion, and abrasion. In deserts, the extreme temperatures cause rocks to expand and contract, which eventually leads to cracks and fractures. These cracks and fractures then allow wind and water to erode the rocks further, eventually breaking them down into smaller pieces. So, in summary, physical weathering is the predominant process in desert regions because the hot and dry climate limits the activity of biological and chemical processes, and the extreme temperatures and wind erosion break down rocks and other geological materials into smaller pieces.

A rock in which water cannot easily pass through is termed

Detalles de la respuesta

A rock in which water cannot easily pass through is called impermeable. Impermeable means that the rock does not allow liquids or gases to pass through it easily. In other words, it is a solid barrier that prevents water from flowing through it. This is different from porous, which means that the rock allows water or other liquids to pass through it easily. An aquifer is a type of rock or soil that holds water and allows it to move through it.

The lower section of R. Kam is showing signs of old stage because of the presence of

Detalles de la respuesta

The lower section of R. Kam is showing signs of an old stage because of the presence of meanders. Meanders are bends or loops in a river, and they are formed when a river flows over a plain. The flow of the river erodes the banks on the outer bend and deposits sediments on the inner bend, causing the river to change course over time. As the river continues to flow, the meanders become more pronounced, and the distance between the outer and inner bends increases. This process is called lateral migration and is a characteristic of an old stage river. Therefore, the presence of meanders in the lower section of R. Kam indicates that the river has been flowing for a long time and has reached an old stage.

Which factor for location of industries explains the establishment of cement industries near areas of limestone deposits?

Detalles de la respuesta

The establishment of cement industries near areas of limestone deposits is mainly due to the factor of "Source of raw material". Cement is made from limestone, which is a key ingredient in the production of cement. By having the limestone deposits nearby, the industries can easily access the raw material and minimize the cost of transportation. This makes it easier for the industries to produce cement efficiently and effectively. Hence, the proximity to the source of raw material is one of the important factors that determine the location of cement industries.

Which of the following factors affect temperature? I. Latitude II. Time III, Wind direction IV. Ocean current 

Detalles de la respuesta

In an economy where the major problem to industrial development is the fear of failure, the most important policy to revitalize the industrial sector of such an economy is

Detalles de la respuesta

Which climatic region is represented by the data?

Detalles de la respuesta

Temperature decreases with height in the

Detalles de la respuesta

The temperature decreases with height in the troposphere. The troposphere is the lowest layer of the Earth's atmosphere, which extends from the surface up to about 7-20 kilometers depending on the location. The reason for the decrease in temperature with height in the troposphere is because the air is heated by the Earth's surface, and as you go higher, the air becomes thinner and less able to retain heat. In other layers of the atmosphere, such as the stratosphere, temperature can actually increase with height due to the presence of certain gases that absorb radiation from the sun. In the ionosphere and exosphere, the temperature can vary widely depending on the level of solar activity and other factors.

Which of the following is not-a sea route? 

Detalles de la respuesta

The route "London -> Moscow -> Baghdad" is not a sea route. A sea route refers to a navigable waterway used for transportation of goods or passengers by ships. In this case, the route "London -> Moscow -> Baghdad" does not involve any sea voyage as it passes through landlocked regions, such as Moscow. On the other hand, the routes "London -> Cape Town --> Melbourne", "New York -> London -> Rotterdam", and "Sydney -> Suez -> London" all involve sea voyages, as they connect cities by navigable waterways. So, the route "London -> Moscow -> Baghdad" is not a sea route.

A fall in sea level can lead to the formation of 

Detalles de la respuesta

One of the following features is an example of faulting

Detalles de la respuesta

Among the given options, the example of faulting is a Rift valley. A rift valley is a type of landform created when the earth's crust moves apart, causing a depression or a valley to form. This movement is caused by the tensional forces acting on the earth's crust, which can lead to the formation of faults. Faulting occurs when there is a fracture or a crack in the earth's crust, and one side moves relative to the other. In the case of a rift valley, the earth's crust is pulled apart, creating a steep-sided valley with a flat floor. This type of landform is common in areas where tectonic plates are diverging, such as the East African Rift Zone or the Mid-Atlantic Ridge. In summary, a rift valley is an example of faulting because it is created by the movement of the earth's crust due to tensional forces, which can cause a fracture or a fault in the crust, leading to the formation of a valley with steep sides and a flat floor.

Musa settlement is likely to be

Detalles de la respuesta

Hamada is another name for

Detalles de la respuesta

How many Standard Time Zones will a country with a longitudinal extent of 155° have?

Detalles de la respuesta

A country's longitudinal extent refers to the range of its longitudes, or the distance between its easternmost and westernmost points. The standard time zones are defined based on the Earth's rotation, and they are divided into 24 time zones, each with a longitudinal width of approximately 15°. Therefore, a country with a longitudinal extent of 155° would likely have 11 time zones. This is because 155° divided by 15° is approximately equal to 11. To be precise, it would have 10.3333 time zones, but since time zones are defined based on whole degrees, the actual number of time zones would be rounded up to 11.

All the following settlements are intervisible from KUSH except

Detalles de la respuesta

TEST OF PRACTICAL KNOWLEDGE QUESTION

(a) Define atmospheric condition.
(b) List four major sources of air pollutants.
(c) Highlight four effects of atmospheric pollution.

Detalles de la respuesta

(a) Atmospheric condition refers to the state or quality of the air in a particular location, which can include factors such as temperature, humidity, and the presence of pollutants or other gases.

(b) Four major sources of air pollutants are:

1. Transportation: including cars, trucks, and planes that emit exhaust fumes and other pollutants.
2. Industry: including factories and power plants that release large amounts of chemicals and other pollutants into the air.
3. Agriculture: including livestock production, which can release large amounts of methane and other gases into the atmosphere.
4. Natural Sources: including wildfires, dust storms, and volcanic eruptions, which can release large amounts of smoke, ash, and other pollutants into the air.

(c) Four effects of atmospheric pollution are:

1. Climate Change: Air pollution can contribute to the warming of the planet by trapping heat in the atmosphere, which can lead to a range of environmental impacts, including rising sea levels and more extreme weather events.
2. Health Problems: Exposure to air pollutants can cause a range of health problems, including respiratory issues, heart disease, and cancer.
3. Environmental Damage: Air pollution can harm wildlife, plants, and ecosystems, and can also contribute to the acidification of oceans and lakes, which can have a range of negative impacts on aquatic life.
4. Economic Costs: Air pollution can lead to increased healthcare costs, reduced productivity, and damage to infrastructure, which can have significant economic impacts at both local and global levels.

(a) Outline four characteristics of nucleated settlements

(b) Identify four functions of cities in the world

(c) State four factors that favour the growth of settlements

Detalles de la respuesta

(a) Four characteristics of nucleated settlements are:

1. Compactness: Nucleated settlements are characterized by a compact layout where the buildings are closely packed together, usually in a circular or semi-circular pattern.
2. Concentric rings: The settlements are often divided into concentric rings, with the central part being the most densely populated and the outer parts being less populated.
3. Centralized governance: Nucleated settlements often have a centralized governance system, with a single authority or leader who makes decisions on behalf of the community.
4. Specialization of functions: Different parts of the nucleated settlement often have specialized functions, such as a market area, residential area, and religious or cultural centers.

(b) Four functions of cities in the world are:

1. Economic: Cities are centers of economic activity, where people engage in trade, commerce, and manufacturing. Cities often have specialized industries that contribute to the national and global economy.
2. Social: Cities provide opportunities for social interaction, cultural exchange, and entertainment. They are often home to diverse populations, which leads to the development of unique social and cultural communities.
3. Political: Cities are centers of political power, where decisions are made that affect the lives of people at the local, national, and even global levels. They are often the seat of government and administration.
4. Environmental: Cities play an important role in environmental management, providing the infrastructure and services needed to manage waste, water, and air pollution. They are also centers for environmental innovation and research.

(c) Four factors that favor the growth of settlements are:

1. Availability of resources: Settlements tend to grow in areas where there are abundant natural resources, such as water, fertile land, and minerals. These resources provide the basis for economic activity and support the needs of the growing population.
2. Transportation: Settlements tend to grow in areas where there is good transportation infrastructure, such as roads, ports, and airports. These infrastructures allow people and goods to move in and out of the settlement, facilitating economic and social interaction.
3. Security: Settlements tend to grow in areas that are relatively safe and secure. People are more likely to settle in areas where they feel protected from natural disasters, crime, and other threats to their safety.
4. Economic opportunities: Settlements tend to grow in areas that offer economic opportunities, such as jobs, education, and investment. People are more likely to settle in areas where they can improve their economic prospects and standard of living.

(a) Draw a sketch map of Nigeria. On the map, show and name: (i) the Rainforest Belt; (ii) the Sahel Savanna (iii) Ibadan.

(b) Outline three characteristics of the rainforest belt

(c) In what four ways is the rainforest vegetation important to the economy of Nigeria?

Detalles de la respuesta

(a)

(b) Three characteristics of the rainforest belt are:

1. Dense vegetation: The rainforest belt is characterized by dense vegetation, with trees that can grow up to 60 meters tall. This vegetation is largely evergreen, meaning that the trees retain their leaves all year round.
2. High rainfall: The rainforest belt receives high levels of rainfall, with an average annual precipitation of between 2,000 and 4,000 mm. This high rainfall supports the growth of the dense vegetation that characterizes the area.
3. Biodiversity: The rainforest belt is home to a high level of biodiversity, with numerous species of plants and animals living within the ecosystem. This biodiversity makes the rainforest belt a valuable resource for research and ecotourism.

(c) Four ways in which the rainforest vegetation is important to the economy of Nigeria are:

1. Timber production: The rainforest belt is an important source of timber, with the timber industry being a major contributor to the Nigerian economy. Timber from the rainforest is used for construction, furniture, and paper production.
2. Agriculture: The rainforest belt provides a favorable environment for agriculture, with crops such as cocoa, coffee, and rubber being grown in the region. These crops are important exports for Nigeria, generating significant revenue for the country.
3. Biodiversity conservation: The rainforest belt is an important conservation area, with numerous endangered species living within the ecosystem. The preservation of the rainforest vegetation is essential for the conservation of these species, which have ecological and cultural value.
4. Ecotourism: The rainforest belt is a popular destination for ecotourists, who visit the area to experience the biodiversity and natural beauty of the region. Ecotourism generates revenue for local communities and contributes to the national economy.

(a) Write explanatory notes on the following: three characteristics of ocean transportation;

(b) three advantages of water transportation;

(c) four ways in which poor transportation network can hinder the economic development of a country

Detalles de la respuesta

(a) The three characteristics of ocean transportation are:

1. Capacity: Ocean transportation is capable of carrying large quantities of cargo over long distances, making it an ideal mode of transportation for bulk goods such as oil, grain, and raw materials.
2. Reliability: Ocean transportation is generally considered to be a reliable mode of transportation, with regular shipping schedules and a large network of ports and terminals to support the movement of goods.
3. Cost-effectiveness: Ocean transportation is often the most cost-effective mode of transportation for long-distance shipments due to the economies of scale associated with large cargo ships and the relatively low cost of fuel.

(b) The three advantages of water transportation are:

1. Efficiency: Water transportation is an efficient mode of transportation, especially for large quantities of goods over long distances.
2. Cost-effectiveness: Water transportation is often more cost-effective than other modes of transportation, such as air or land, due to the economies of scale associated with large cargo ships and the relatively low cost of fuel.
3. Environmentally friendly: Water transportation is considered to be a more environmentally friendly mode of transportation compared to other modes, such as air or land transportation, as it produces fewer emissions and uses less energy.

(c) The four ways in which a poor transportation network can hinder the economic development of a country are:

1. Inefficient transportation: A poor transportation network can result in inefficient transportation of goods, causing delays and increasing the cost of goods. This can negatively impact the competitiveness of a country's goods in the global market.
2. Limited access to markets: Poor transportation infrastructure can limit access to markets, both domestically and internationally, hindering the growth of businesses and the overall economy.
3. Reduced investment: A poor transportation network can deter investment in a country, as businesses may be hesitant to invest in an area with limited transportation options.
4. Decreased quality of life: Poor transportation infrastructure can also reduce the quality of life for citizens, as they may face difficulties in accessing essential goods and services. This can lead to increased poverty and social unrest, further hindering economic development.

TEST OF PRACTICAL KNOWLEDGE QUESTION

(a) Define weathering.
(b) ldentiry three factors that affect weathering.
(c) Describe the processes of exfoliation.

Detalles de la respuesta

(a) Weathering is the natural process by which rocks and other geological materials are broken down into smaller pieces or altered in their composition due to exposure to various environmental factors over time.

(b) Three factors that affect weathering are:

1. Physical Factors: such as temperature changes, pressure changes, and abrasion.
2. Chemical Factors: such as water, acids, and oxidation.
3. Biological Factors: such as plant roots, burrowing animals, and microorganisms.

(c) Exfoliation is a type of physical weathering where rocks are broken down into thin layers or sheets due to changes in temperature. This happens because rocks expand when they are heated by the sun during the day and contract when they cool down at night. Over time, repeated cycles of heating and cooling cause the outer layers of the rock to crack and peel away, creating a layered structure. This process is also known as thermal stress weathering. Exfoliation is particularly common in desert environments where there are large temperature fluctuations between day and night.

TEST OF PRACTICAL KNOWLEDGE QUESTION

(a) State two differences between weather and climate.
(b) Name the instruments used in measuring the following weather elements: (i) sunshine (ii) rainfall (iii) cloud cover.
(c) Explain how Wind speed is measured and recorded.

Detalles de la respuesta

(a)

Two differences between weather and climate are:

1. Weather refers to the short-term atmospheric conditions in a specific area, whereas climate refers to the long-term average weather patterns in a region.
2. Weather can change rapidly and unpredictably, whereas climate changes occur over much longer periods of time and are more predictable.

(b)

The instruments used in measuring the following weather elements are:

1. Sunshine: Sunshine recorder
2. Rainfall: Rain gauge
3. Cloud cover: Ceilometer

(c)

Wind speed is measured and recorded using an instrument called an anemometer. An anemometer typically consists of two or three cups mounted on a vertical axis that spin around as the wind blows. The speed of the cups rotating is directly proportional to the speed of the wind. An electronic sensor attached to the anemometer converts the rotational speed into an electrical signal, which can then be recorded and displayed on a meter or computer. Wind speed is usually measured in units of meters per second (m/s) or miles per hour (mph).