Sure! Below are the answers to the questions you provided. Make sure to verify them with the relevant topographic and orthophoto maps, as I do not have access to visual materials.
Question 3.1: Multiple Choice
3.1.1 What economic activities take place in Barberton?
B. Farming
3.1.2 Barberton receives rainfall during _______
B. Summer
3.1.3 The height of the contour line represented by letter A on the orthophoto map is
[Note: This depends on the orthophoto map, but assuming:]
C. 830m
3.1.4 1:50 000 is an example of a ________
C. Ratio scale
3.1.5 Refer to block C4 of the topographic map. The height of the trigonometric beacon found in this block is
D. 1640.4m
Question 3.2: Mapwork Calculations
3.2.1 Calculate the gradient between spot height 1369 in block E1 and spot height 1593 in block E2.
Formula: \[ \text{Gradient} = \frac{\text{vertical distance}}{\text{horizontal distance}} \]
Calculations:
- Vertical Distance = 1593 - 1369 = 224m
- Horizontal Distance = [Use the scale on the map or the straight-line distance between the two points, let’s say it’s X km. Convert it to m if necessary.]
Assuming the horizontal distance is found to be Y m:
\[
\text{Gradient} = \frac{224}{Y}
\]
3.2.2 Determine the true bearing from spot height 1174 in block B3 to spot height 1266 in block B4 found on the topographic map.
[Calculate using a protractor on the map, though a potential response might be:]
[Answer depends on map measurements. Provide the calculated bearing, e.g., 75°]
Question 3.3: Mapwork Interpretation
3.3.1 Explain why there are only buildings and infrastructure in the north-western part of the map.
The north-western part of the map likely has more favorable terrain for construction (e.g., flat land, less steep areas) and availability of resources such as water or proximity to transportation routes.
3.3.2 Give two positive impacts of the Tinie Louw Nature Reserve on the people and the environment of Barberton.
- Tourism opportunities that boost the local economy through visitors coming to enjoy nature.
- Conservation of local biodiversity which benefits the environment, including flora and fauna.
3.3.3 Identify the type of river shown in block E1 of the topographic map. Give a reason for your answer.
It is likely a seasonal river (ephemeral or intermittent). Reason: This could be inferred from the contours indicating a lack of consistent water flow and the surrounding vegetation type.
Question 3.4: GIS
3.4.1 Refer to the R38 in block A2 of the topographic map. Classify this as point, line or polygon data.
Line data
3.4.2 Give a possible attribute of the R38.
Road type (e.g., gravel road, tarred road)
3.4.3 Explain how a GIS can be used to help determine the location of a shopping centre.
- GIS can analyze demographic data such as population density and income level to identify high demand areas for shopping.
- GIS can also map existing infrastructure such as road networks and public transport systems to ensure accessibility for potential customers.
Feel free to modify the answers according to your specific requirements and calculations based on the maps!