7.5 Coastal Management on the Gold Coast

Refer to the topographic map and aerial photograph on pages 164 and 165 to answer the following questions.

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* Required

7 Express the scale of the map as a statement: One centimetre on the map represents kilometres on the ground.  

250 meters on the Ground.

8 What is the contour interval of the map?  

The Contour interval of the map is 10 Meters.

9 Calculate the following:

a the width of the mouth of the Tweed River  

210m

b the length of the breakwater on the southern side of the Tweed River  

3750m

c the length of the jetty extending into the ocean from the sand pumping station in AR 5483 

250m 

d the distance along the beach from the lookout at Greenmount Hill to the Rainbow Bay surf club  

500m

e the time it would take you to walk along the beach from the Rainbow Bay surf club to the Coolangatta Beach surf club if you were walking at a speed of 5 kilometres per hour.  

It would take 12.5 Minutes walking at 5 Kilometers per hour.

10 Which is higher, the lighthouse at Point Danger or the lookout on Kirra Hill?  

The lighthouse at Point Danger is higher than the lookout on Kirra Hill.

11 What is the aspect of the slope where the electricity substation is located in AR 5283?  

It is a slightly uphill slope.

12 What is the approximate height of the small electricity substation in AR 5283?  

It is approximately 8 to 10 Meters ASL.

13 Name the human features located at the following grid references:

a 532824  : Island Drive

b 536823 : A bridge on Island Drive

c 541844 : Point Danger Lighthouse

d 513834 : The Border Park Raceway and the Pacific Highway

e 528819 : The Caravan Park

f 532828 : Wharfs and Houses on River TCE

14 Name the natural features located at the following grid references:

a 524818 : Boyd's Island

b 537822 : Terranora Inlet

c 514844 : Kirra Beach

d 521833 : Mount Murraba

e 544817 : Sandy Island

f 544839 : North Head

15 Refer to 7.24 and the topographic map. Give the grid reference of the lookout that the photographer was standing at when the photograph was taken.  

GR535844

16 What is the density of buildings in AR 5483?  

There are almost no buildings in this Area Reference as it is a Sand Dredging Site.

17 Which area has the greatest density of buildings per square kilometre—AR 5281 or 5282? Give a reason for your answer.  

Area Reference 5282 has a greater density of buildings because there are a lot more buildings in the area than AR 5281 since almost half of AR 5281 is the Terranora Creek.

18 Estimate the bearing of the following features from the water tank on the top of Mount Murraba:

a the groyne at Kirra Point 

20 Degrees

b the mouth of the Tweed River  

80 Degrees

c Boyds Island  

175 Degrees

d Snapper Rocks *

45 Degrees.