Study the information below - NSC Geography - Question 3 - 2022 - Paper 1
Question 3
Study the information below. The orthophoto index map sheet west of 2930 CA 5 is …
2930 AC 24 | 2930 AC 26 | 2930 AD 21
2930 CA 4 | 2930 CA 5 | 2930 CB 1
2930... show full transcript
Worked Solution & Example Answer:Study the information below - NSC Geography - Question 3 - 2022 - Paper 1
Step 1
3.1.1 Study the information below.
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Answer
The correct answer is B (2930 AC 4).
Step 2
3.1.2 The scale of 1 : 50 000 shows a … area and … detail.
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Answer
The scale of 1:50,000 shows a smaller area and less detail than a larger scale of 1:100,000.
Step 3
3.1.3 Calculate the straight-line distance in metres.
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Answer
To find the distance, use the formula:
extDistance=extMapdistanceimesextMapscale
Assuming the map distance from block B3 to C5 is 9 cm, the calculation is:
9extcmimes100=900extm
Thus, the power line covers a distance of 900 m.
Step 4
3.1.4 Draw a freehand cross-section from the recreation facility at point F.
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Answer
Draw the cross-section ensuring it connects point F in block D2 to point G in block D3. Clearly label points F and G.
Step 5
3.1.5 Is the recreation facility at F in block D2 intervisible from point G in block D3?
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Answer
Yes, the recreation facility at F is intervisible from point G in block D3.
Step 6
3.1.6 Calculate the magnetic declination for 2022.
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Answer
The total change in magnetic declination over 6 years is:
9ext°imes6=54ext°
Starting from the initial declination, if it was 24°42', it becomes:
