Study the map extract on a scale of 1:100,000 and answer the following questions: (a) Draw an outline of the map using a scale of 1:300,000 On your outline,...
Study the map extract on a scale of 1:100,000 and answer the following questions: (a) Draw an outline of the map using a scale of 1:300,000 On your outline, mark: (i) an area liable to flooding; (ii) the full length of River Rafin Bela and its direction of flow; (iii) the settlement of TILL! and ZOGIRMA; and (iv) shade completely the area above 800ft around ZANUA HILL
(b) Identify any four distinct drainage features on the map
(c) If you are travelling along the minor road from Rafin Tsaka to Nageda, name any six features, physical and human, you will come across on your way.
(a) Reducing the map to a scale of 1:300,000
The original extract is drawn to a scale of \(1:100{,}000\) and measures 37.5 cm long by 36.6 cm broad. To redraw the outline at \(1:300{,}000\) every distance must be reduced to one-third, because the new denominator is three times larger:
The representative fraction of the reduced outline is therefore
\[ 1:100{,}000 \times 3 = 1:300{,}000. \]
The outline is drawn as a rectangle 12.5 cm long by 12.2 cm wide. On it the four required features are marked: (i) the low, flat land bordering the river channel is outlined and shaded as the area liable to flooding; (ii) the full course of River Rafin Bela is drawn from its source to its mouth with an arrowhead pointing downstream to show the direction of flow; (iii) the settlements of TILLI and ZOGIRMA are each shown by a small circle and named; and (iv) the 800 ft contour enclosing ZANUA HILL is drawn and the ground above it shaded completely.
Reduced outline (1:300,000) of the map extract with the four required annotations: flood-liable land, River Rafin Bela and its direction of flow, the settlements TILLI and ZOGIRMA, and the shaded ground above the 800 ft contour around Zanua Hill.
(b) Four distinct drainage features on the map
Meanders - pronounced looping bends along the course of River Rafin Bela.
Watersheds - the high ground (including Zanua Hill) separating one drainage basin from the next.
Floodable (flood) plains - the wide, flat, low-lying land bordering the river channel.
Braiding - the division of the river into several interlacing channels around bars of deposited sediment.
River valleys and a dendritic (tree-like) drainage pattern are also clearly present on the extract.
(c) Six features along the minor road from Rafin Tsaka to Nageda
Human features:
Settlements (small nucleated villages along the route).
Bench marks (survey height points beside the road).
The original extract is drawn to a scale of \(1:100{,}000\) and measures 37.5 cm long by 36.6 cm broad. To redraw the outline at \(1:300{,}000\) every distance must be reduced to one-third, because the new denominator is three times larger:
The representative fraction of the reduced outline is therefore
\[ 1:100{,}000 \times 3 = 1:300{,}000. \]
The outline is drawn as a rectangle 12.5 cm long by 12.2 cm wide. On it the four required features are marked: (i) the low, flat land bordering the river channel is outlined and shaded as the area liable to flooding; (ii) the full course of River Rafin Bela is drawn from its source to its mouth with an arrowhead pointing downstream to show the direction of flow; (iii) the settlements of TILLI and ZOGIRMA are each shown by a small circle and named; and (iv) the 800 ft contour enclosing ZANUA HILL is drawn and the ground above it shaded completely.
Reduced outline (1:300,000) of the map extract with the four required annotations: flood-liable land, River Rafin Bela and its direction of flow, the settlements TILLI and ZOGIRMA, and the shaded ground above the 800 ft contour around Zanua Hill.
(b) Four distinct drainage features on the map
Meanders - pronounced looping bends along the course of River Rafin Bela.
Watersheds - the high ground (including Zanua Hill) separating one drainage basin from the next.
Floodable (flood) plains - the wide, flat, low-lying land bordering the river channel.
Braiding - the division of the river into several interlacing channels around bars of deposited sediment.
River valleys and a dendritic (tree-like) drainage pattern are also clearly present on the extract.
(c) Six features along the minor road from Rafin Tsaka to Nageda
Human features:
Settlements (small nucleated villages along the route).
Bench marks (survey height points beside the road).
