JAMB UTME - Geography - 2018

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Climate is the weather conditions prevailing in an area in general or over a long period.

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The feature marked X in the diagram is a cliff. A cliff is a high and steep rock face or earth surface that drops abruptly from a higher to a lower level. It can also be defined as a steep slope or vertical surface, especially one at the edge of a body of water like the ocean or a lake. The diagram shows a rocky surface that slopes down dramatically towards the water, which is a clear indication that it is a cliff.

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The difference between high tide and low tide is referred to as "tidal range". Tidal range is the vertical distance between the highest water level of a high tide and the lowest water level of a low tide. In other words, it is the difference in height between the highest and lowest water levels during a tidal cycle. Tidal range can vary depending on the location, the phase of the moon, and other factors such as weather conditions. It is an important measurement for activities such as boating, fishing, and coastal engineering, as well as for understanding and predicting the effects of sea level changes on coastlines.

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Wind is the perceptible natural movement of the air, especially in the form of a current of air blowing from a particular direction

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Environmental issues are harmful effects of human activity on the biophysical environment. South Eastern States of Nigeria are heavily affected by gully erosion due to their underlying geology and the serenity of their accompanied surface process.

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Lines joining places with the same mean annual rainfall are called isohyets. Isohyets are lines drawn on a map connecting points that receive the same amount of rainfall in a year. The word "isohyet" comes from the Greek words "iso" meaning "equal" and "hyetos" meaning "rain". These lines help us understand the patterns and distribution of rainfall over a certain area, and can be useful for various purposes such as agriculture, water management, and meteorology.

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The river transports its load through three main processes: solution, traction, and suspension. Plucking is not a process by which a river transports its load. Solution is the process by which the river dissolves soluble minerals such as calcium and transports them in solution. Traction is the process by which larger and heavier particles such as boulders and pebbles are rolled or dragged along the riverbed. Suspension is the process by which smaller and lighter particles such as silt and clay are carried along in the flowing water. Plucking, on the other hand, is a process by which glaciers transport their load. It occurs when the glacier freezes onto rocks and then plucks them out as the glacier moves. This process is not applicable to rivers as they do not have the capability to freeze onto rocks and pluck them out.

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A fold mountain is a type of land-form that is associated with large scale orogeny. In simple terms, orogeny is the process of mountain building, which occurs when two tectonic plates collide and push up the land between them. This process causes the rock layers to bend, fold and become uplifted, creating a fold mountain. Examples of fold mountains include the Rocky Mountains in North America and the Himalayas in Asia.

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The feature associated with river erosion is valleys. River erosion occurs when a river's fast-moving water cuts into its riverbed and banks, causing the river to widen and deepen over time. This process creates steep-sided valleys that are wider at the bottom than at the top. The riverbed and banks are constantly being reshaped by the erosive forces of the water, which carry away sediment and rocks. Over time, the river's course may change as it continues to erode and deposit material, carving new valleys and leaving behind a signature of its past path in the form of terraces.

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Evolution does not determine the availability of resources in a country. Evolution refers to the gradual changes in species over time through the process of natural selection. It has no direct effect on the availability of resources in a country. Population, emigration, and morbidity, on the other hand, can influence the availability of resources in a country. A large population can lead to increased demand for resources, while emigration can decrease the number of people using those resources. Morbidity, or the rate of illness and disease in a population, can also impact the availability of resources, as a large portion of the population may require medical attention and resources.

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The feature in the diagram is a sand dune, which is a landform associated with wind deposition. Sand dunes are formed when wind carries sand particles and deposits them in a particular location, creating a mound of sand. Over time, as the wind continues to blow, the sand dune may shift or change in shape. Sand dunes can be found in deserts, on beaches, and in other areas with high wind activity.

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The answer is "earthquake" as it is not a form of mass movement. Mass movement refers to the process by which large amounts of soil, rock, and other debris move down a slope under the influence of gravity. Landslides, rockslides, and talus creep are all examples of mass movement. An earthquake, on the other hand, is a sudden shaking of the earth's surface caused by the movement of tectonic plates. While earthquakes can cause landslides and other types of mass movement, the earthquake itself is not a form of mass movement. Instead, it is a geological event that can trigger mass movement in the surrounding area.

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The system of cultivation of tropical commercial crops estates is known as plantation agriculture. Plantation agriculture refers to a large-scale farming system where a single crop is grown on a large piece of land, usually in tropical countries. This type of agriculture is characterized by the use of large amounts of land, labor, and capital to cultivate crops such as rubber, sugar, coffee, cocoa, and tea. These crops are grown for commercial purposes, and the aim is to produce large quantities of a single product for export. The crops are typically grown in monoculture, which means that only one type of crop is grown in a particular area. This type of agriculture is often associated with the exploitation of workers, environmental degradation, and social and economic inequality.

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The commonwealth of nations, known as commonwealth is an inter governmental organisation of 53 member States that are mostly former territories of the British empire

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Soil conservation is the preventing of soil loss from erosion or reduced fertility caused by over usage, acidification, salinization or other chemical soil contamination

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Time at GMT is 11am, 150 = 1 hour, 750 gives us 5 hours

  The West looses, therefore

  11am - 5hours = 6:00am.

  Option D is the right answer, all other options are wrong

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New York (75°W) is 5 hours behind Coordinated Universal Time (UTC-5) and Nigeria (15°E) is 1 hour ahead of Coordinated Universal Time (UTC+1). Therefore, there is a time difference of 6 hours between New York and Nigeria. When it is 5.00pm in New York, we can add 6 hours to find the time in Nigeria: 5.00pm in New York + 6 hours = 11.00pm in Nigeria So the correct answer is 11.00pm.

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A broad-based population pyramid is composed mainly of young dependants and active inhabitants. This means that there are more people in the younger age brackets (typically 0-14 years old) and a significant proportion of the population is in the working age bracket (typically 15-64 years old). The number of elderly people (typically 65 years and above) in this type of pyramid is relatively small. Broad-based population pyramids are typically associated with countries that have high birth rates and lower life expectancies. In these countries, the younger population tends to be larger and the older population tends to be smaller due to factors such as high infant mortality rates and shorter life spans. The larger working-age population in these countries can be a potential source of economic growth if they are able to find employment and contribute to the country's development.

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The annual temperature range at station Q is calculated as the difference between the highest and the lowest temperature recorded in a year. The highest temperature recorded at the station in the given table is 19°C and the lowest temperature recorded is -11°C. Hence, the annual temperature range at the station Q is 19°C - (-11°C) = 30°C. So, the answer is 30°C.

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The scale of a map is the ratio of the distance on the map to the actual distance on land. It is usually written as a fraction, like 1:100,000, where the first number represents the distance on the map and the second number represents the corresponding distance on land. To find the scale of the map in question, we need to divide the actual distance on land (4km) by the distance on the map (2cm). First, we need to convert 4 km to cm: 4 km = 4 x 10^3 m = 4 x 10^3 x 100 cm = 4 x 10^5 cm Now, we divide the actual distance on land (4 x 10^5 cm) by the distance on the map (2 cm): (4 x 10^5 cm) / (2 cm) = 2 x 10^5 So the scale of the map is 1 : 2 x 10^5, which is equivalent to 1:200,000.

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Lake Kivu and Lake Malawi are related in that they are both rift valley lakes. A rift valley lake is a type of lake that forms in a depression or basin created by tectonic activity. In the case of these two lakes, they were formed as a result of the East African Rift, which is a large geological rift that stretches for thousands of kilometers through Eastern Africa. The two lakes are located in different parts of the rift, with Lake Kivu in the western branch and Lake Malawi in the southern branch, but they share a common geological origin.

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The answer is 88 days. Mercury is the planet closest to the Sun, and it orbits around the Sun at a very fast pace. It takes approximately 88 Earth days for Mercury to make one complete orbit around the Sun. This means that Mercury completes about 4 orbits in the time it takes Earth to complete 1 orbit. Because of its fast orbit and close proximity to the Sun, Mercury experiences extreme temperature variations, with temperatures ranging from over 800 degrees Fahrenheit during the day to -290 degrees Fahrenheit at night.

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The lines joining places of equal sunshine duration on maps are called Isohel. Isohel is a type of contour line that connects all the points on a map that receive the same amount of sunlight in a given period, usually a day or a year. These lines are similar to contour lines on a topographic map that connect points of equal elevation. Isohels are used to show areas with similar amounts of sunshine and can be used to analyze patterns in climate and weather. For example, isohel maps can help identify areas with higher or lower amounts of sunlight and help to plan agriculture, solar power generation, and other activities that depend on sunlight.

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Cotton growing under irrigation is the mainstay of the agricultural economy in Sudan. Sudan is one of the largest producers of cotton in Africa and the world, and cotton farming is a major part of its agricultural economy. The country has a long history of growing cotton, with the industry dating back to the early 20th century. Cotton farming in Sudan is mainly done under irrigation due to the arid climate in most parts of the country. The irrigated areas for cotton farming are mainly found in the central and eastern regions of the country, such as the Gezira Scheme, which is one of the largest irrigation projects in the world. Cotton is a major export commodity for Sudan, and the industry employs a significant portion of the country's population. The government has made efforts to promote and support the cotton industry, with initiatives such as providing subsidies to farmers and investing in research and development to improve cotton production and quality. In summary, cotton growing under irrigation is the mainstay of the agricultural economy in Sudan, due to its favorable climate for cotton farming, long history of cotton production, and significant export earnings from the cotton industry.

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The answer is Abuja. Dodoma is the capital city of Tanzania, and similarly, Abuja is the capital city of Nigeria. Prior to Abuja, Lagos was the capital city of Nigeria. However, due to its rapidly growing population and other challenges, the government decided to move the capital to a more central location in the country, which is Abuja. Therefore, just as Dodoma serves as the political hub of Tanzania, Abuja serves as the political center of Nigeria.

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Among the options given, Cuba has the least potential for the production of steel. Cuba is a small island country in the Caribbean with a limited supply of natural resources, including iron ore and coal, which are essential raw materials for steel production. Cuba's iron reserves are low-quality and require significant processing to be suitable for steelmaking. Additionally, Cuba has limited access to modern steelmaking technology and expertise, which further restricts its potential for steel production. On the other hand, India, Japan, and Germany have significant potential for steel production. India is one of the world's largest producers of steel, with abundant iron ore reserves and a highly skilled workforce. Japan and Germany are also major players in the global steel industry, with advanced technology and ample access to raw materials.

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A sea stack is a geological land form consisting of a steep and often vertical column of rock in the sea near a coast.,formed by wave erosion.

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The environmental hazard among the given options that is not included is afforestation. Afforestation refers to the process of planting trees in an area where there was no forest, or the forest has been destroyed, and it is typically seen as a positive action for the environment. On the other hand, the other three options are environmental hazards that can have negative impacts on people and the environment. Flooding, for example, can lead to property damage, displacement of people, and loss of life. Vulcanicity, which refers to the movement of magma and volcanic activity, can result in the release of toxic gases, destruction of property, and loss of life. Deforestation, which is the clearing of forests for various human activities, can cause soil erosion, loss of biodiversity, and contribute to climate change.

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The form of chemical weathering is carbonation. Carbonation is a type of chemical weathering that occurs when carbon dioxide from the air reacts with minerals in rocks to form new compounds. This reaction causes the minerals in the rock to dissolve and the rock to become weaker and eventually break down into smaller pieces. This process is important in the formation of soil, as it helps break down rocks and minerals into smaller particles that can be easily transported and mixed into the soil.

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A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface.

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Deflation is an action of wind when it picks up or remove loose particles from an area and leaves a denuded surface covered with coarse material too large for wind transport. The most noticeable results of deflation in some places are shallow depressions called blowouts

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A choropleth map is a thematic map in which areas are shaded or patterned in proportion to the measurement of the statistical variable being displayed on the map, such as population density or per-capita income.

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The basic mineral that is common to Sokoto, Ewekoro, Calabar, and Nkalagu is limestone. Limestone is a sedimentary rock that is composed mainly of calcium carbonate, which is a mineral that is commonly found in the Earth's crust. It is a very versatile mineral that has a wide range of applications, including in the construction industry, as a raw material for cement production, and in agriculture as a soil conditioner. Sokoto, Ewekoro, Calabar, and Nkalagu are all regions in Nigeria that have abundant deposits of limestone. The limestone in these areas is of high quality and is a significant source of revenue for the local economy. It is usually mined from quarries and then processed into various forms for its different uses. Therefore, the basic mineral that is common to all these areas is limestone, which is an essential raw material for various industries and is vital for economic growth and development.