neco 2020 geography | Practical

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Question 1 View Details
A topographic map of the town of Olorun is provided. The map uses a grid with coordinates expressed in kilometres. The coordinates of four landmarks are given in the table below. | Landmark | X (km) | Y (km) | |----------|--------|--------| | Market (M) | 2.3 | 5.1 | | Hospital (H) | 5.8 | 8.4 | | School (S) | 4.0 | 2.9 | | Police Station (P) | 1.5 | 3.2 | The map also shows three land‑use zones with the areas indicated. | Land‑use zone | Area (km²) | |---------------|------------| | Residential | 4.2 | | Commercial | 1.8 | | Agricultural | 6.5 | Using the information above, answer the following: a) Calculate the straight‑line distance between the Market and the Hospital to the nearest 0.01 km. b) Determine the three‑figure bearing of the line from the Market to the Hospital. c) Identify the land‑use zone that occupies the greatest area and state its percentage of the total area of the three zones (to the nearest whole percent).
Question Parts
(a)
Calculate the straight‑line distance between the Market and the Hospital to the nearest 0.01 km.
(b)
Determine the three‑figure bearing of the line from the Market to the Hospital.
(c)
Identify the land‑use zone that occupies the greatest area and state its percentage of the total area of the three zones (to the nearest whole percent).
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Question 2 View Details
A map of a proposed agricultural field is drawn with a scale of 1 cm : 250 m. On the map the field is represented as a rectangle whose length measures 6.4 cm and whose width measures 3.2 cm. Answer the following: a) Calculate the actual length and width of the field in metres. b) Determine the actual area of the field in hectares (1 ha = 10 000 m²). c) If the recommended fertilizer application rate is 50 kg per hectare, calculate the total amount of fertilizer required for the whole field in kilograms. d) Discuss two possible sources of error that could affect the accuracy of the area obtained from the map scale, and suggest one way to minimise each error.
Question Parts
(a)
Calculate the actual length and width of the field in metres.
(b)
Determine the actual area of the field in hectares.
(c)
If the recommended fertilizer application rate is 50 kg per hectare, calculate the total amount of fertilizer required for the whole field in kilograms.
(d)
Discuss two possible sources of error that could affect the accuracy of the area obtained from the map scale, and suggest one way to minimise each error.
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Question 3 View Details
A world map is provided with a scale of 1 cm = 200 km. The map shows the following two Nigerian cities: - Lagos: 6°30' N, 3°25' E - Abuja: 9°04' N, 7°29' E Using the information on the map and the standard geographical conversions, answer the following:
Question Parts
(a)
Express the latitude and longitude of each city in decimal degrees (to two decimal places).
(b)
Calculate the approximate straight‑line distance between Lagos and Abuja. Use 1° latitude = 111 km and 1° longitude = 111 km × cos (average latitude of the two cities). Show all steps.
(c)
If a commercial aircraft flies at an average speed of 800 km/h, estimate the flight time between the two cities. Express your answer in hours and minutes.
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Question 4 View Details
A weather station recorded the following observations over a 7‑day period. | Day | Max Temp (°C) | Min Temp (°C) | Relative Humidity (%) | Wind Speed (km/h) | Wind Direction | |-----------|---------------|---------------|-----------------------|-------------------|----------------| | Monday | 32 | 24 | 68 | 12 | NNE | | Tuesday | 35 | 26 | 72 | 15 | ENE | | Wednesday | 30 | 22 | 80 | 10 | NE | | Thursday | 33 | 25 | 65 | 14 | NNE | | Friday | 36 | 27 | 70 | 13 | ENE | | Saturday | 31 | 23 | 75 | 11 | NE | | Sunday | 34 | 25 | 68 | 12 | NNE | Using the data above, answer the following questions:
Question Parts
(a)
Calculate the mean daily temperature for each day (average of maximum and minimum). Identify the day with the highest mean temperature.
(b)
Determine the overall mean temperature for the week (average of the seven daily means).
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