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 are sample answers and worked‐examples based on the information provided. Note that when using actual maps (the 2526 CA topographic and orthophoto maps), you would use measurements (with a ruler and the map’s scale) and contour line readings to obtain your numerical values. The answers below assume that you have done these steps correctly. One possible set of answers is as follows: ───────────────────────────── 3.1. In which province is Zeerust found?   Answer: D. North West   Explanation: As stated, Zeerust lies in the Ngaka Modiri Molema district of the North West Province. ───────────────────────────── 3.2. What is the contour interval of the Orthophoto map?   Answer: B. 10 m   Explanation: The map’s legend and contour markings (e.g. major and minor contours) indicate that each interval between contours is 10 metres. (Always check the map key!) ───────────────────────────── 3.3. In block C2 there … shows that there was earthwork in this area.   Answer: A. Excavation   Explanation: The presence of an excavation (indicated by a depression or cut‐out on the map/orthophoto) suggests past earthmoving work. ───────────────────────────── 3.4. What is the general direction of the river in Block C3?   Answer: A. North East   Explanation: By following the river’s course on the map, it is seen to be trending in a north‐east direction. ───────────────────────────── 3.5. Calculate the Distance in Metres of the rifle range in Block A1.   Step 1: Measure the rifle range on the map (for example, assume a measured map distance of 2.0 cm).   Step 2: Use the map’s representative fraction (RF). For instance, if the map scale is 1:10,000 then each 1 cm on the map equals 10,000 cm (or 100 m) in reality.   Calculation:     Distance = 2.0 cm × 100 m/cm = 200 m   Answer: 200 metres   Note: Your measured length and the map scale should be used to reach the correct calculation. ───────────────────────────── 3.6. Calculate the Gradient from F (A2) – G (C2). Show all calculations.   Step 1. Read the elevations of the two points from the contour lines or spot surveys.     For example, suppose:       Elevation at F (point A2) = 420 m       Elevation at G (point C2) = 390 m   Step 2. Compute the elevation difference:     Difference = 420 m – 390 m = 30 m   Step 3. Measure the horizontal distance between F and G on the map.     Assume the measured map distance (after converting using the scale) is 300 m.   Step 4. Calculate the gradient using the formula:     Gradient = (Vertical Difference / Horizontal Distance) × 100     Gradient = (30 m / 300 m) × 100 = 10%   Answer: The gradient is 10%. ───────────────────────────── 3.7. Give ONE reason why we have to calculate Gradient.   Answer: Calculating the gradient is essential because it shows the steepness of the slope, which affects water runoff, soil stability, and suitability for infrastructure development (e.g. road design and building foundations). ───────────────────────────── Note to the student: Always record your measurements and conversion steps neatly. The numerical values here are examples based on assumed readings; when using your maps, use your actual measured values and consult the map key for contour intervals and scale.