neco 2022 geography | Practical

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Question 1 View Details
A topographic map of the town of Ogbomoso is provided. The map scale is 1 cm : 500 m and the map is divided into a grid of 1 cm squares. The legend shows that the symbol ▭ denotes a school, ▲ denotes a hospital and a shaded area denotes a forest. The following data are extracted from the map: - Grid reference of Ogbomoso High School: (3.2 cm, 5.6 cm) measured from the left‑hand and bottom edges of the map respectively. - Grid reference of Ogbomoso General Hospital: (7.8 cm, 2.4 cm). - The forest occupies the rectangle bounded by the vertical grid lines x = 5 cm and x = 8 cm and the horizontal grid lines y = 3 cm and y = 6 cm. Using only the information above, answer the following:
Question Parts
(a)
Calculate the real distance between the school and the hospital in metres (give your answer to the nearest metre).
(b)
Determine the actual area of the forest in hectares.
(c)
If a straight road is to be built from the school to the hospital, state the bearing of the road to the nearest degree, measured clockwise from north.
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Question 2 View Details
A sketch of the River Ogun basin is drawn on tracing paper. The sketch uses a scale of 1 : 25 000 (1 cm on the sketch represents 250 m on the ground). The following measurements were taken on the sketch with a ruler: - Length of the main river from source (point A) to mouth (point B): 12.4 cm. - Maximum width of the river at its widest point: 0.8 cm. - Perimeter of the basin, approximated by a polygon, measured on the sketch: 30.5 cm. - Area of the basin obtained by the grid method on the sketch: 18.6 cm². Using the data above, answer the questions that follow:
Question Parts
(a)
Calculate the actual length of the river in kilometres (to two decimal places).
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Question 3 View Details
A topographic map of a region is drawn with latitude lines marked every 1° from 4°N to 10°N and longitude lines marked every 1° from 5°E to 12°E. The map scale is 1 cm : 50 km. On the map, Town A is located at the intersection of 6°N and 8°E. Town B lies 3.5 cm east and 2.0 cm north of Town A on the map.
Question Parts
(a)
Determine the latitude and longitude of Town B.
(b)
Calculate the actual straight‑line distance between Town A and Town B in kilometres.
(c)
Estimate the bearing of the line from Town A to Town B (to the nearest degree) using the north and east displacements.
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Question 4 View Details
The following table shows the weather observations recorded at a coastal city over one week. | Day | Max Temp (°C) | Min Temp (°C) | Relative Humidity (%) | Wind Speed (km/h) | |-----|---------------|---------------|-----------------------|-------------------| | Mon | 32 | 22 | 68 | 12 | | Tue | 35 | 24 | 72 | 15 | | Wed | 30 | 20 | 65 | 10 | | Thu | 28 | 18 | 80 | 8 | | Fri | 33 | 23 | 70 | 14 | | Sat | 31 | 21 | 75 | 13 | | Sun | 34 | 25 | 78 | 16 | Using this data, answer the questions below.
Question Parts
(a)
Calculate the average maximum temperature and the average minimum temperature for the week (to one decimal place).
(b)
Identify the day that recorded the greatest temperature range (maximum minus minimum) and state that range in degrees Celsius.
(c)
For the day identified in part (b), calculate the mean daily temperature (average of the maximum and minimum).
(d)
State two possible sources of error that could affect the accuracy of the temperature measurements recorded in the table.
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