3.1 MAP SKILLS AND CALCULATIONS Refer to the topographic map - NSC Geography - Question 3 - 2023 - Paper 2

To find the area, we will first convert the measured length on the map to actual distance using the scale. If the measured length is 3.7 cm and the scale shows that 1 cm on the map equals a certain distance in km, we calculate as follows:

Using the area formula: $Area = Length (L) \times Breadth (B)$ Substituting the values accordingly will yield the area.

From trigonometric station 286 (F), we measure the bearing to spot height 1 357 (G). As per our reference, the true bearing reported is 161°. This bearing represents the angle measured clockwise from true north to the line connecting these two points.

To determine the magnetic declination for 2023, we start by calculating the total change over the years:

$Total \ change = 3 \ years \times 10' \ = 30'$

We apply this to the magnetic bearing formula: $Magnetic \ bearing = True \ bearing + Magnetic \ declination$

Thus, to find the magnetic declination for 2023, we combine this total change with the initial magnetic bearing of 161°.

The Phakisa Motor Race Track is primarily located in an area designated as a (rural-urban fringe). This zone typically represents a transitional area where urban and rural uses meet.

The location of the race track is strategically situated at a distance from the populated areas, reducing noise pollution and traffic congestion for residents. By having the race track away from residential zones, it minimizes the potential adverse environmental impacts, hence protecting local communities from possible inconveniences.

The primary activity present in block 6, as indicated on the orthophoto map, is predominantly mining, which is a significant economic activity in this region.

Evidence from the topographic map includes the presence of mining shafts, indicated by specific symbols that represent mining operations. Additionally, structures like conveyor belts and rubble sites for excavated materials are visible, supporting the mining activity assertion.

The transport infrastructure supporting mining includes roads for vehicle access, service routes for heavy machinery, and conveyor belts for the transportation of mined materials.

In blocks A1 and A2, the main street pattern identified is a grid pattern, characterized by numerous street intersections that facilitate efficient traffic movement.

The grid pattern creates a higher intersection density which can lead to increased traffic congestion due to more points where vehicles must stop or yield, especially during peak traffic hours. The frequent crossings can cause delays and overcrowding on these streets.

The reference point 'J' represents spatial data as it indicates a specific physical location within the geographical context of the map.

The spatial coordinates of location J are provided as 27°53’S and 26°42’E. This concisely identifies the exact geographical position.

Reference information X indicates the various types of road classifications on the map, such as national freeways and minor roads. This categorization helps to interpret the function, size, and accessibility of these roads in the context of extract Y.

Remote sensing is advantageous for collecting geographical data at varied distances, allowing for monitoring of extensive areas without physical presence, and improving understanding of spatial patterns.

Collecting information remotely enhances safety, especially in disaster-prone areas, allows access to otherwise inaccessible regions, and provides comprehensive data more rapidly than traditional methods.