Refer to the topographic map and the orthophoto map - NSC Geography - Question 3 - 2022 - Paper 2
Question 3
Refer to the topographic map and the orthophoto map.
3.1.1 The contour interval of the orthophoto map is (5 m/20 m).
3.1.2 Which vertical exaggeration would give t... show full transcript
Worked Solution & Example Answer:Refer to the topographic map and the orthophoto map - NSC Geography - Question 3 - 2022 - Paper 2
Step 1
3.1.1 The contour interval of the orthophoto map is (5 m/20 m)
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Answer
The contour interval can be deduced from the provided orthophoto map, indicating that the elevation changes are marked every 5 meters, hence the contour interval is 5 m.
Step 2
3.1.2 Which vertical exaggeration would give the most detailed indication of the landforms on a cross-section?
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Answer
The vertical exaggeration that provides the most detailed representation is option D (20 times), as it allows for greater visualization of subtle landform variations.
Step 3
3.1.3 Complete the grid reference/coordinates of spot height 114 in block C3
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(a) 29° 47′ S
(b) 04° 21′ E
Step 4
3.1.4 Calculate the average gradient between F and G
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Using the formula for average gradient:
= 1:57.69$$
This indicates that for every 57.69 units horizontally, there is a 1 unit rise.
Step 5
3.1.5 Determine if the gradient between (F to G) is steeper or gentler than (H to I)
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The gradient from (F to G) is more gentle than (H to I) based on the calculated values and their respective slopes.
Step 6
3.2.1 Is the settlement pattern at J dispersed or nucleated?
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The settlement pattern at J is identified as dispersed due to the spatial distribution of households and structures.
Step 7
3.2.2 State ONE site factor that favored farming in this area
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One site factor favorable for farming in this area is the presence of flat land, which supports agricultural activities.
Step 8
3.2.3 Refer to residential area K
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Residential area K is located on hilly terrain, indicated by the closely spaced contour lines on the map.
Step 9
3.2.4 Give evidence from the topographic map
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Evidence indicating the type of housing in area K includes small plots and the presence of low-cost housing structures as seen in both the map and photograph.
Step 10
3.2.5 How does the spacing of the contour lines indicate that residential area K is built on steep/hilly land?
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The closely spaced contour lines signify a steep slope, indicating that residential area K is built on hilly terrain.
Step 11
3.2.6 How did the steep/hilly land influence the type of street pattern in this area?
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The steep and hilly landscape has resulted in an irregular street pattern, as roads must adapt to the contours of the land.
Step 12
3.2.7 Refer to Canaldands in block A5
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One situation factor influencing the location of the Canaldands industrial area is its access to markets, which is critical for business operations.
Step 13
3.2.8 Name ONE tertiary activity that is associated with the Hazelmere Dam
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One tertiary activity associated with the Hazelmere Dam is recreation, including activities such as fishing and boating.
Step 14
3.2.9 How does this tertiary activity contribute to the economy of Verulam?
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This tertiary activity contributes to the economy of Verulam by promoting tourism, which attracts locals and generates revenue for the area.
Step 15
3.3.1 Identify the following:
(a) Human-made polygon (area) feature
(b) Natural river
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(a) The human-made polygon feature is identified as cultivated land.
(b) The natural river feature on the map is indicated as the Midoti River.
Step 16
3.3.2 The TWO features represent (vertical) data
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The identified features—cultivated land and river—represent vertical data due to their elevation and surface differences.
Step 17
3.3.3
(a) What evidence indicates that buffering is taking place along the Midoti River?
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(a) Evidence of buffering can be seen in trees planted along the riverbanks, which help filter out pollutants from surrounding land.
(b) Buffering was necessary to protect the Midoti River from pollution and to maintain water quality.
Step 18
3.3.4 Identify the infrastructure data layer
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The infrastructure data layer that creates inland links for the Durban TradePort is identified as roads.
Step 19
3.3.5 Did the topography data assist in determining the location of the Durban Trade Port?
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Yes, the topographic data played a crucial role in determining the location of the Durban Trade Port by identifying areas suitable for construction and ease of transport.
