KAARTVAARDIGHEDE EN BEREKENINGE
Verwys na die topografiese kaart - NSC Geography - Question 3 - 2023 - Paper 2
Question 3
KAARTVAARDIGHEDE EN BEREKENINGE
Verwys na die topografiese kaart.
3.1.1 Wanneer 'n oppervlakte op die kaart bereken word, word die skaala gebruik om die ...
A. geb... show full transcript
Worked Solution & Example Answer:KAARTVAARDIGHEDE EN BEREKENINGE
Verwys na die topografiese kaart - NSC Geography - Question 3 - 2023 - Paper 2
Step 1
3.1.1 A. gebied op die topografiese kaart te verteenwoordig.
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Answer
The area on the topographical map can be represented using the scale of the map. This scale reflects the ratio between a distance on the map and the corresponding distance on the ground, allowing for accurate representation of geographical features.
Step 2
3.1.2
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Answer
To calculate the area represented in red/black on the map:
Use the length measurement from the map (3.7 cm) and convert this into real-world dimensions using the scale.
Determine the width based on the scale and length of the area.
Apply the formula:extOppervlakte=extLengte(L)imesextBreedte(B)
Finally, express the result in km².
Step 3
3.1.3
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The true bearing from the trigonometrical beacons (286°) can be converted to magnetic bearing, considering the magnetic declination (161° 34'). The result of this calculation provides the adjusted magnetic bearing relevant for navigation.
Step 4
3.1.4
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To find the total change in magnetic declination in 2023:
Identify the current declination: 21° 09' W.
Add the change: 1° 30'.
Express the equation:21°09′W+1°30′=[FinalDeclinationResult]
This final value is crucial for accurate navigation and should be reported in degrees and minutes.
Step 5
3.1.5
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Answer
To calculate the magnetic bearing for 2023:
Use the previous answers: The true bearing obtained in step 3.1.3 plus the magnetic declination from step 3.1.4.
