Please refer to the 2331CC Phalaborwa topographic map and the 2331CC 18 Phalaborwa (North) orthophoto map provided in the link to answer the following questions.
Question 1: Multiple Choice
1.1: D. Limpopo
1.2: B. 10m
1.3: B. 15°52’ West of True North
1.4: C. Cultivated land
1.5: C. 421m
1.6: D. 1:10 000
1.7: B. 31
1.8: B. 6.3km
1.9: B. 10m
1.10: D. Place of Worship
Question 2: Mapwork Calculations
2.1: Calculate the gradient between spot height 421 in block C4 and spot height 444 in block D5.
2.2: Calculate the vertical exaggeration of the given cross-section.
2.3: Explain if using the vertical exaggeration would distort the features of the cross-section.
2.4: Calculate the difference in height between trigonometric beacon 12 in block D2 and trigonometric beacon 5 in block E3.
Question 3: Mapwork Interpretation
3.1: Identify the type of river shown by the letter H on the topographic map.
3.2: List negative impacts on the surrounding environment of the sewerage works in block A1.
3.3: Identify the type of landform indicated by number 8 on the orthophoto map.
3.4: Provide reasons suggesting the area displayed on the orthophoto map is residential.
3.5: Provide reasons for the development of cultivated land in block C1.
Question 4: Geographic Information Systems
4.1: Give two functions of a GIS.
4.2: Provide examples of point data, line data, and polygon data from block D1.
4.3: Differentiate between how raster data and vector data are stored.
4.4: Determine which diagram has a higher spatial resolution and give a reason.
4.5: Identify the type of aerial photograph displayed in the figure.
Please ensure you follow the instructions provided at the beginning of the SBA and number each page of your answer script.
NSTRUCTIONS
1. Thefrontpageofyouranswersheetmustinclude: a. Yourname
b. Yourstudentnumber
c. The signed plagiarism declaration
2. Remembertolabelyourquestions(asperthequestionpaper).
3. Pleasenumbereachpageofyouranswerscript.
4. ThisactivitycomprisesFOURmainquestions.
5. Completeallquestionsintheorderthattheyarepresentedtoyou.
6. ThemaximummarkforthisSBAis60.
7. ThisSBAwillbehandedoutwhenyoustartModule16.Youmustsubmit
this SBA when you complete the Module 16 Mastery check.
8. Whenansweringthesequestions,pleaserefertothe2331CC
Phalaborwa topographic map and the 2331CC 18 Phalaborwa (North) orthophoto map. These maps will be provided in a link along with the SBA Question paper.
9. Youmayuseacalculatortoperformcalculations.
3
GENERAL INFORMATION ON PHALABORWA
The name "Ba-Phalaborwa" was given to the area by the Sotho tribes who moved there from the south. It means "better than the south". It is located near the confluence of the Ga-Selati River and the Olifants, halfway up along the western border of the Kruger National Park in the Lowveld. It is the only town in South Africa that borders Kruger National Park. The border with Mozambique is two hours away. Various private game reserves surround Phalaborwa. Hans Merensky Golf Estate is situated on the outskirts.
4
QUESTION 1: MULTIPLE CHOICE
Select the correct answer from the options provided below.
Question 1.1 [1 mark]
In which province is Phalaborwa located?
A. Gauteng
B. NorthernCape C. PortElizabeth D. Limpopo
Question 1.2 [1 mark]
What is the contour interval of the topographic map?
A. 5m B. 10m C. 15m D. 20m
Question 1.3 [1 mark]
What is the mean magnetic declination for the year 2012 for Phalaborwa?
A. 14°52’WestofTrueNorth B. 15°52’WestofTrueNorth C. 16°52’WestofTrueNorth D. 17°52’ West of True North
Question 1.4 [1 mark]
What feature is shown by the number 6 on the orthophoto map?
A. Recreationground B. Woodland
C. Cultivatedland
D. Orchard or Vineyard
5
Question 1.5 [1 mark]
The height of the spot height shown by the letter J on the topographic map is ___
A. 421cm B. 421km C. 421m D. 421mm
Question 1.6 [1 mark]
What is the scale of the orthophoto map?
A. 1:20000 B. 1:50000 C. 1:30000 D. 1:10 000
Question 1.7 [1 mark]
The map index for the topographic map is 2331 CC Phalaborwa. Which value
represents the latitude?
A. 23
B. 31
C. 33
D. None of the above
Question 1.8 [1 mark]
The distance from spot height 398 in block E2 to spot height 491 in block E4 in
km is ____
A. 2.5km B. 6.3km C. 3.1km D. 1.4km
6
Question 1.9 [1 mark]
What is the contour interval of the orthophoto map?
A. 5m B. 10m C. 15m D. 20m
Question 1.10 [1 mark]
Block E4 of the orthophoto map has a structure with the letter S in the middle.
What structure is shown in this block?
A. Postoffice
B. College
C. Hotel
D. Place of Worship
TOTAL: 10 marks
7
QUESTION 2: MAPWORK CALCULATIONS
Question 2.1 [5 marks]
Calculate the gradient between spot height 421 in block C4 and spot height 444 in block D5 found on the topographic map. Show all your working. Use the formula below to assist you.
𝐺𝑟𝑎𝑑𝑖𝑒𝑛𝑡 = 𝑣𝑒𝑟𝑡𝑖𝑐𝑎𝑙 𝑑𝑖𝑠𝑡𝑎𝑛𝑐𝑒 h𝑜𝑟𝑖𝑧𝑜𝑛𝑡𝑎𝑙 𝑑𝑖𝑠𝑡𝑎𝑛𝑐𝑒
Question 2.2 [5 marks]
You have been given a cross-section with a horizontal scale of 1:50 000 and a vertical scale of 1:30 000. Calculate the vertical exaggeration of this cross-section. Show all your working. Use the formula below to assist you.
𝑉𝑒𝑟𝑡𝑖𝑐𝑎𝑙 𝑒𝑥𝑎𝑔𝑔𝑒𝑟𝑎𝑡𝑖𝑜𝑛 = 𝑣𝑒𝑟𝑡𝑖𝑐𝑎𝑙 𝑠𝑐𝑎𝑙𝑒 h𝑜𝑟𝑖𝑧𝑜𝑛𝑡𝑎𝑙 𝑠𝑐𝑎𝑙𝑒
Question 2.3 [2 marks]
In Question 2.2 above you determined the vertical exaggeration of a cross-section. Would using this vertical exaggeration have distorted the features of the cross-section, making it look unrealistic? Give a reason for your answer.
Question 2.4 [3 marks]
Calculate the difference in height between trigonometric beacon 12 in block D2
and trigonometric beacon 5 in block E3 found on the topographic map.
TOTAL: 15 marks
8
QUESTION 3: MAPWORK INTERPRETATION
Question 3.1 [3 marks]
Identify the type of river shown by the letter H on the topographic map. Give a
reason for your answer.
Question 3.2 [4 marks]
List two negative impacts on the surrounding environment of the sewerage
works located in block A1 of the topographic map.
Question 3.3 [3 marks]
Identify the type of landform indicated by number 8 on the orthophoto map and
give a reason for your answer.
Question 3.4 [6 marks]
Provide three reasons that suggest the area displayed on the orthophoto map is
residential.
Question 3.5 [4 marks]
Block C1 of the topographic map shows that most of the area has been utilised for cultivated land. Provide two reasons for the development of cultivated land in this area.
TOTAL: 20 marks
9
QUESTION 4: GEOGRAPHIC INFORMATION SYSTEMS
Question 4.1 [4 marks]
Give two functions of a GIS.
Question 4.2 [3 marks]
Give one example of the following data types from block D1 on the topographic map.
4.2.1 Point data
4.2.2 Line data
4.2.3 Polygon data
Question 4.3 [4 marks]
Differentiate between how raster data and vector data are stored.
Question 4.4 [3 marks]
Look at the two diagrams below. Which diagram, A or B, has a higher spatial resolution? Give a reason for your answer.
10
Question 4.5 [1 mark]
Identify the type of aerial photograph displayed in the figure below.
GRAND TOTAL: 60 MARKS
SBA END
TOTAL: 15 marks
1 answer