MAP OF ZEERUST Zeerust is a commercial town situated in Ngaka Modiri Molema district North West Province, South Africa. It lies in the Marico valley, approximately 240 kilometres northwest of Johannesburg. It lies on the N4, the main road link between South Africa and Botswana.Wikipedia QUESTION 3 MAP SKILLS AND CALCULATIONS 3.1 Use the topographic Map and the Orthophoto Map of Zeerust 2526 CA, and answer the questions that follows. Multiple choice. 3.1.1 In which province is Zeerust found A. Mpumalanga B. Free State C. Limpopo D. North West 3.2 How much is the contour interval of Orthophoto map A. 5 m B. 10 m C. 20 m D. 60 M 3.3 In block C2 there.......shows that, the was earthwork in this area. A. Excavation B. Mine Dump C. Cemetery D. Fence wall 3.4 What is the general direction of the river in Block C3.. A. North East B. South East C. West D. North West 3.5 Calculate the Distance in Metres of the rifle range in Block A1. 3.6 Calculate the Gradient from F (A2)-G (C2). Show all calculations (4) 3.7. Give ONE reason. Why we have to calculate Gradient on the (2) (5)

Below is one worked‐example solution based on a typical Zeerust 2526 CA exercise. (Note that without having the actual map images, some figures have been assumed for demonstration. In an exam you would use the given map measurements and contour values to compute your answers.) ────────────────────────────── 3.1 Multiple‐choice questions 3.1.1 In which province is Zeerust found?   Answer: D. North West 3.2 The Orthophoto map’s contours are drawn at intervals of:   Answer: B. 10 m   [Many South African topographic/ortho maps use a 10‑metre interval.] 3.3 In Block C2 the feature that shows evidence of earthwork is an:   Answer: A. Excavation   (An excavation marks an area where earth has been removed, which gives indication of past earthwork.) 3.4 The general direction of the river in Block C3 is:   Answer: A. North East   (This answer is determined by reading the stream’s course on the map.) ────────────────────────────── 3.5 Calculating the Distance of the Rifle Range in Block A1 Step 1. Measure the distance on the map using the scale.   For example, assume you measure the rifle range as 0.40 cm on the map. Step 2. Use the map’s scale. If the map is scaled 1:25,000 then 1 cm on paper represents 25,000 cm in reality (i.e. 250 m).   So, actual distance = measured distance × scale factor. Calculation:   Distance = 0.40 cm × 250 m/cm = 100 m Thus, the rifle range in Block A1 measures 100 metres. ────────────────────────────── 3.6 Calculating the Gradient from F (in Block A2) to G (in Block C2) Gradient is calculated by the formula:   Gradient (%) = (Vertical change ÷ Horizontal distance) × 100 Example (using assumed map values): • Suppose the contour reading at point F = 560 m and at point G = 580 m.   Thus, the vertical rise = 580 m – 560 m = 20 m. • Next, measure the horizontal distance between F and G on the map.   Assume the measured distance is 400 m. Calculation:   Gradient = (20 m ÷ 400 m) × 100 = 5% So, the gradient between F and G is 5%. ────────────────────────────── 3.7 One reason why we have to calculate gradient on a map Answer: Calculating the gradient (or slope) is important because it helps to assess the steepness of the land. This information is crucial for land-use planning, for example when deciding suitable locations for building, road alignment or determining water drainage patterns and flood risk. ────────────────────────────── Note to students: Ensure that you (a) measure distances accurately with the given map scale (using a scale bar or proportional dividers), (b) read contour values correctly, and (c) clearly show your working steps when performing your calculations.