3.1 MAP SKILLS AND CALCULATIONS
Refer to the topographic map - NSC Geography - Question 3 - 2023 - Paper 2
Question 3
3.1 MAP SKILLS AND CALCULATIONS
Refer to the topographic map.
3.1.1 When calculating an area on the map, the scale is used to ...
A represent the area on the topo... show full transcript
Worked Solution & Example Answer:3.1 MAP SKILLS AND CALCULATIONS
Refer to the topographic map - NSC Geography - Question 3 - 2023 - Paper 2
Step 1
3.1.1 When calculating an area on the map, the scale is used to ...
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Answer
B: Calculate the area in reality using the scale provided on the topographic map.
Step 2
3.1.2 Calculate the area which is demarcated in red/black on the topographic map in km².
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Answer
Using the formula: Area = Length (L) x Breadth (B), and substituting the measured length (3.7 cm) and the width derived from the scale, the area can be calculated. If we assume an estimated breadth, the area can then be calculated accordingly.
Step 3
3.1.3 The true bearing from trigonometric station 286 (F) in block B4 to spot height 1 357 (G) in block C5 is (161°/342°).
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The true bearing is calculated by measuring the angle clockwise from true north, resulting in a true bearing of 161°.
Step 4
3.1.4 Calculate the magnetic declination of Odendaalsrus for 2023.
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Using the data given, we find total change over 3 years calculated as: 3 years x 10' = 30'. The magnetic declination is found by adding this to the true bearing, yielding a magnetic declination for 2023.
Step 5
3.2.1 (a) In which land-use zone is the race track located?
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The race track is located in the rural-urban fringe, a zone that facilitates interaction between urban and rural areas.
Step 6
3.2.1 (b) How does the location of the race track reduce possible environmental injustices to the residents of Odendaalsrus?
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The location of the race track minimizes environmental injustices by providing a buffer zone that reduces noise and pollution impacts on nearby residential areas.
Step 7
3.2.2 (a) The main primary activity at 6 on the orthophoto map is (mining/quarrying).
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The primary activity is identified as mining, particularly evident by facilities indicated on the map.
Step 8
3.2.2 (b) Give evidence from the topographic map to support your answer to QUESTION 3.2.2(a).
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Evidence includes the presence of mining structures like shafts, excavations, and ore dumps as illustrated on the map.
Step 9
3.2.2 (c) Identify the transport infrastructure that supports the main primary activity at 6 on the orthophoto map.
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Transport infrastructure includes roads, rail/service lines, and conveyor belts facilitating the transportation of mined materials.
Step 10
3.2.3 Identify street pattern I in blocks A1 and A2.
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The street pattern is identified as a gridiron layout, which is typical in urban design for optimizing accessibility.
Step 11
3.2.3 (i) Why is the street pattern, identified in QUESTION 3.2.3(a), associated with traffic congestion?
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The gridiron layout can lead to traffic congestion due to the high number of intersections and increased vehicle interactions.
Step 12
3.2.3 (ii) In what way has this street pattern identified in QUESTION 3.2.3(a)?
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The layout has made it easier to construct roads but may contribute to inefficiencies in traffic flow.
Step 13
3.3.1 (a) The location of J is (spatial/attribute) data.
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The location of J is considered spatial data, representing a specific geographic point on the map.
Step 14
3.3.1 (b) Give the spatial data of J in degrees and minutes.
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The spatial data of J is 27°53'S, 26°42'E, indicating its exact position on the map.
Step 15
3.3.1 (c) How does reference information X assist in identifying the attribute data of the road in extract Y?
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Reference information X indicates different types of roads, aiding in the understanding of the road's function and characteristics in extract Y.
Step 16
3.3.2 (Spatial resolution/Remote sensing) is used to collect information from a distance.
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Remote sensing collects data over large areas from a distance, which helps in monitoring changes in landscapes.
Step 17
3.3.3 What is the advantage of collecting information from a distance for the activity at 6 on the orthophoto map?
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Collecting information from a distance is safer during scenarios like disasters and allows for a more comprehensive understanding of inaccessible areas.
