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WorksheetsNZ Case study revision Quizziz
Total questions: 25
Worksheet time: 9mins
Sand is being taken from Mangawhai-Pakiri, where is this?
North Island
South Island
A small Island 10km away from the main islands.
The sand in Mangawhai - Pakiri is dredged from ....
Near shore zone.
Back shore zone.
Off shore zone.
Foreshore zone.
The sand is taken to ...
Wellington.
Hamilton.
Auckland.
Christchurch.
The two locations are how far apart from each other?
20km
40km
50km
60km
The population of Auckland is?
1 million
1.5 million
2 million
2.5 million
in % how much GDP is Auckland responsible for?
20%
25%
30%
35%
In 2015 Auckland saw a record number of tourists, how many were there?
2.3 million
2.4 million
2.5 million
2.6 million
What distance in Mangawhai-Pakiri is sand being dredged?
10km
20km
30km
40km
How long has the dredging been happening for?
50 Years
60 Years
70 Years
80 Years
Between 1994 and 2004 how much sand was extracted per year?
155,000 m3/year
160,000 m3/year
165,000 m3/year
170,000 m3/year
True or false the dredging has ended in Mangawhai but continued in Pakiri.
True
False
This sand is used for ?
Beach replenishment in Aukland.
Building materials
Glass making.
Creating childrens play areas.
The Holocene time period has lasted for ...
7,000 years
8,000 years
9,000 Years
10,000 years
Mangawhai - Pakiri is ...
An open system
A closed system
There is ....
A lot of sediment input from rivers in Mangawhai - Pakiri.
Little sediment input from rivers in Mangawhai - Pakiri.
There used to be sediment input from rivers in the area but dam construction has altered this.
Sediment extraction exceeds inputs by a factor of ?
5
6
7
8
The following sand stores are being depleted
Bars
Spits
beaches
Dunes
The beach profiles in these areas have changed by becoming
Shorter
Steeper
Wider
Flatter
Sea scarps occur here, what is a coastal sea scarp?
Stroms in 1978 caused a breach at the base of Mangawhai spit, how big was this breach?
28m
29m
30m
31m
A breach and second breach at Mangawhai's spit caused sedimentation of the harbour. What is harbour sedimentation?
What has been used to help restore an equilibrium in this area?
Harbour dredging
A sea wall
Groyne construction
rip rap
Increased erosion is likely to happen in the future because ....
A decline in natural protection
Extreme storm events
cruise boats causing disturbance
Constructive waves
Coastal retreat by the end of the century is likely to be how many meters?
20m
25m
30m
35m
True or false climate change and rising sea levels are causing further complications in this area.
True
False
No evidence
