Study the map extract on a scale of 1:50,000 and answer the following questions (a) On the map extract: (I) Print the letters shown in the brackets below on...

Answer Details

(a) Printing the letters on the map

• Conical Peak (CP): print in the north-east, on the hill whose contour rings are roughly circular and close together, tapering to a single high point (the ground above 750 ft).
• Narrow River Valley (NRV): print in the south-west, where the contours form a sharp V enclosing a stream.
• Even Slope (ES): print in the eastern part, where the contours are equally spaced, showing a uniform gradient.

(b) Gradient of the minor road from the Sabongidda junction to the church in Aviosi

Height at the Sabongidda road junction \(=250\text{ ft}\); height at the church in Aviosi \(=675\text{ ft}\).

\[\text{Vertical interval}=675-250=425\text{ ft}.\]

Road distance measured on the map \(=5.9\text{ in}\). Since \(1\text{ mile}=5280\text{ ft}\) and the scale is 1:50,000 (1.25 in to 1 mile):

\[\text{Horizontal equivalent}=\frac{5.9}{1.25}=4.7\text{ miles}=4.7\times5280=24\,816\text{ ft}.\]\[\text{Gradient}=\frac{\text{Vertical interval}}{\text{Horizontal equivalent}}=\frac{425}{24\,816}=\frac{1}{58}.\]

The gradient of the minor road is 1 in 58 (1:58).

(c) Location and functions of Uhomora

Location: Uhomora lies in the south-east of the map, on the spur between two tributaries of River Onwan, on level ground between the 250 ft and 300 ft contours.

Functions:

• It is a nodal town, being the meeting point of two minor roads.
• It performs a medical function, shown by the hospital and dispensary.
• It performs an educational function, shown by the schools.
• It performs a religious function, shown by the churches.