Study the map extract on a scale of 1:50,000 and answer the following questions: (a)
Study the map extract on a scale of 1:50,000 and answer the following questions:
(a) On the map, mark and name one example of each of the following features with the letters in bracket:
(i) Spur (SP);
(ii) Gentle slope (GS);
(iii) Watershed (WS);
(iv) V-shaped valley (VS).
(b) In your answer booklet;
(i) calculate the length (in km) of River Dakorobi from its source to the point where iL joins River Sencha. (Show all workings clearly);
(ii) describe the relief of the mapped area.
(c) Highlight the influence of relief on settlement in the area. P
Explanation
Each feature as indicated in the topographical map extract
(b) Calculation of the length of the River Dakorobi. Either of the following two approaches can be used
(i) Use of thread (2)
A piece of paper.
Length of the river on the map = 10.8 cm.
On the map 1cm represent 50,000cm on ground.
Scale of the map = 1:50,000.
Actual length of the river in km = 50,000 x 10.8 100,000 = 5.4km
(ii) Description of relief
The relief of the map is generally a highland area. Its height ranges from 950ft to over 3000ft. Lowest in the North East and highest in the North West. The North West is made up of rugged relief and steep slopes. Pockets of isolated hills cut across from North West to South East. Other parts have gentle rolling slopes (SW and NE parts). V shaped valleys in the N W. The presence of cliffs are also found in the NW part.
(c) Influence of relief on settlement
The area mapped shows dispersed settlement pattern due to high relief of the a7-ea. Most settlements are also the more gentle slopes South of the map. The more rugged (mountainous) areas North West of the map attract less settlements. The only settlements in the North West are Mayo, Dongi and Kenchungu. Settlements avoid the steep slopes and passes attract settlement location such as Karlahi.