7.5 Coastal Management on the Gold Coast

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

Scale 1:250 000


What is the contour interval of the map?


10meters

Calculate the following:

the width of the mouth of the Tweed River

210m

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

3750m

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

250m

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

200m

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 minuets walking at 5kilo per hour

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

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

It's slightly uphill slope

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

It's approximately 8 to 10 m ASL

Name the human features located at the following grid references:

532824

island drive

536823

a bridge on island drive

541844

pointer danger lighthouse

513834

the border park raceway and the pacific highway

528819

the caravan park

532828

wharfs and houses on river TCE

Name the natural features located at the following grid references:

524818

boyd's island

537822

terranora inlet

514844

kirra beach

521833

mount murraba

544817

sandy island

544839

north head

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

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.

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 AR5281 since almost half of AR5281 is the Terrranora creek.

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

the groyne at Kirra Point

20 d

the mouth of the Tweed River

80 d

Boyds Island

175 d

Snapper Rocks 
45 d