2.1 State the direction in which the height is decreasing between trigonometrical station 91, in block A3, and spot height 1176, in block A2 - NSC Geography - Question 2 - 2017 - Paper 2
Question 2
2.1 State the direction in which the height is decreasing between trigonometrical station 91, in block A3, and spot height 1176, in block A2. Give a reason for your ... show full transcript
Worked Solution & Example Answer:2.1 State the direction in which the height is decreasing between trigonometrical station 91, in block A3, and spot height 1176, in block A2 - NSC Geography - Question 2 - 2017 - Paper 2
Step 1
State the direction in which the height is decreasing between trigonometrical station 91, in block A3, and spot height 1176, in block A2.
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Answer
The direction in which the height is decreasing is from trigonometric station 91 (A3) towards spot height 1176 (A2). This is because as you move from block A3 to A2, the height value decreases, indicating a downward gradient.
Step 2
Give a reason for your answer.
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Answer
The reason is based on the observed height values. Trigonometric station 91 has a higher elevation than spot height 1176. Thus, the logical deduction leads us to conclude that the direction of decreasing height is towards the lower elevation.
Step 3
Is the race course in block I6 visible from the diggings at P in block J4?
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Answer
No, the race course in block I6 is not visible from the diggings at P in block J4.
Step 4
Give a reason for your answer.
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Answer
The reason is that there may be natural obstructions such as hills or trees that block the line of sight from the diggings at P in J4 to the race course in I6.
Step 5
Refer to demarcated area 4 on the orthophoto map. Calculate the surface area of area 4 in km².
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Answer
To calculate the surface area, we apply the formula: Area = length (L) x breadth (B). Given the length is 0.8 km and the breadth is 0.4 km, we have:
extArea=0.8extkmimes0.4extkm=0.32extkm2
Step 6
Indicate the unit of measurement in your final answer.
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Answer
The unit of measurement for the surface area calculated is in square kilometers (km²).
