NSC Geography Geographical information systems – GIS: Refer to the topographic map and

Question

Refer to the topographic map and the orthophoto map.

3.1.1 The contour interval of the orthophoto map is (5 m/20 m).

3.1.2 Which vertical exaggeration would give the most detailed indication of the landforms on a cross-section?
A
B
C
D

3.1.3 Complete the grid reference/coordinates of spot height 114 in block C3 on the topographic map. Write down only the information that is not included in the question.
(a) 29° 47'S
(b) 04' 1" E

Refer to the topographic map.

3.1.4 Calculate the average gradient between F and G.
Use the following information:
Vertical interval (VI): 119 m – 80 m = 39 m
Formula: Average gradient (G) = $ G = \frac{VI}{HE} $
Vertical equivalent (HE) = 4.5(1) cm × 500 = 2250 m

3.1.5 Determine if the gradient between (F to G) is steeper or gentler than (H to I).

Refer to J in block D4 on the topographic map.

3.2.1 Is the settlement pattern at J dispersed or nucleated?

3.2.2 State ONE factor that favoured farming in this area.

3.2.3 Refer to residential area K in block E3 on the topographic map and the photograph of the same area below.

3.2.4 Give evidence from the topographic map and/or photograph to support your answer to QUESTION 3.2.3.

3.2.5 How does the spacing of the contour lines indicate that residential area K is built on steephilly land?

3.2.6 How did the steep/hilly land influence the type of street pattern in this area on the topographic map?

Refer to the orthophoto map.

3.2.7 Refer to Canalands (6) in block A5 on the orthophoto map and state ONE situation factor that influenced the location of this industrial area.

Refer to the Hazelmere Dam in block A1 and an enlarged extract of the topographic map below.

3.2.8 Name ONE tertiary activity that is associated with the Hazelmere Dam.

3.2.9 How does this tertiary activity (answer to QUESTION 3.2.8) contribute to the economy of Verulam?

Refer to the block below representing block D5 on the topographic map.

3.3.1 Identify the following:
(a) Human-made polygon (area) feature

(b) Natural feature

3.3.2 The TWO features (answer to QUESTION 3.3.1) represent (vector) data.

Refer to blocks A3 and A4 on the orthophoto map.

3.3.3 (a) What evidence indicates that buffering is taking place along the Midoli River?
(b) Explain why it was necessary to buffer the Midoli River.

Refer to blocks B4 and B5 on the topographic map.

3.3.4 (a) Kind Shaka International Airport (1)

(b) The gradient/land is gentle. (1)

Refer to the topographic map and the orthophoto map - NSC Geography - Question 3 - 2022 - Paper 2

Worked Solution & Example Answer:Refer to the topographic map and the orthophoto map - NSC Geography - Question 3 - 2022 - Paper 2

The contour interval of the orthophoto map is (5 m/20 m)

Which vertical exaggeration would give the most detailed indication of the landforms on a cross-section?

Complete the grid reference/coordinates of spot height 114 in block C3 on the topographic map. Write down only the information that is not included in the question.

Calculate the average gradient between F and G.

Determine if the gradient between (F to G) is steeper or gentler than (H to I).

Is the settlement pattern at J dispersed or nucleated?

State ONE factor that favoured farming in this area.

Give evidence from the topographic map and/or photograph to support your answer to QUESTION 3.2.3.

How does the spacing of the contour lines indicate that residential area K is built on steephilly land?

How did the steep/hilly land influence the type of street pattern in this area on the topographic map?

Refer to Canalands (6) in block A5 on the orthophoto map and state ONE situation factor that influenced the location of this industrial area.

Name ONE tertiary activity that is associated with the Hazelmere Dam.

How does this tertiary activity (answer to QUESTION 3.2.8) contribute to the economy of Verulam?

Identify the following: human-made polygon (area) feature.

Identify the following: natural feature.

The TWO features (answer to QUESTION 3.3.1) represent vector data.

What evidence indicates that buffering is taking place along the Midoli River?

Explain why it was necessary to buffer the Midoli River.

Kind Shaka International Airport.

The gradient/land is gentle.

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