3.1.1 In which province is Phalaborwa?
3.1.2 31 in the map index 2331CC refers to .. - NSC Geography - Question 3 - 2021 - Paper 1
Question 3
3.1.1 In which province is Phalaborwa?
3.1.2 31 in the map index 2331CC refers to ...
A. longitude.
B. latitude.
C. graticule.
D. code.
3.1.3 What is the map index... show full transcript
Worked Solution & Example Answer:3.1.1 In which province is Phalaborwa?
3.1.2 31 in the map index 2331CC refers to .. - NSC Geography - Question 3 - 2021 - Paper 1
Step 1
In which province is Phalaborwa?
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Answer
Phalaborwa is located in the Limpopo province of South Africa.
Step 2
31 in the map index 2331CC refers to ...
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Answer
The number 31 in the map index refers to the latitude.
Step 3
What is the map index south-west of 2331CC?
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Answer
The map index south-west of 2331CC is 2330DB.
Step 4
Calculate the area covered by feature 6 in blocks D4/5 and E4/5 on the orthophoto map in m².
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Answer
To calculate the area, use the formula:
Area=Length(L)xBreadth(B)
Given that the measured length is 2 cm, and let's assume that the breadth is also 2 cm (for example), the area will be:
Area=2cmx2cm=4cm2.
To convert this to m²:
Since 1 cm² = 0.0001 m², therefore:
Areainm2=4cm2x0.0001=0.0004m2.
Step 5
Why does feature 6 appear larger on the orthophoto map than on the topographic map?
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Answer
Feature 6 appears larger on the orthophoto map because orthophotos provide a more realistic view of features, capturing their actual sizes and shapes due to the perspective from which they are taken, unlike the more standard representation in topographic maps.
Step 6
Determine the true bearing from spot height 445, in block A4 to spot height 421, in block C4 on the topographic map.
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Answer
To determine the true bearing, measure the angle with a protractor from the north line to the line connecting the two spot heights. Assuming the bearing is calculated to be 65°, this would be the true bearing.
Step 7
The magnetic declination for 2021 is 17°10′ west of true north. Use the true bearing in your answer to QUESTION 3.1.6 to calculate the magnetic bearing.
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Answer
To calculate the magnetic bearing, subtract the magnetic declination from the true bearing.
