16 terms

Austral Realm

Test #4
Name the regions of the Austral realm.
1. Australia
2. New Zealand
3. Antartica
Australia and New Zealand belong to the same geographical realm but differ greatly in physiography. Why?
plate tectonics.
australia lies on the center of the australian plate far from any active edges.
NZ straddles a subduction plate where the pacific plate plunges below the australian plate
How do Australia and NZ differ physiographically?
australia-vast, dry, low relief, volcanoes and earthquakes are rare and unknown
NZ-mountainous, LOTS of volcanoes and earthquakes
How is human geography changing in Australia?
aboriginal activism and asian immigration
How is human geography changing in NZ?
maori activism and pacific islander immigration
What areas dominate the Austral economy?
livestock products
Great Artesian Basin
provides ground water to a semi-desert interior
The Shield
an ancient mineral rich surface dating before creation of Pangea
evolved from overlap of geography and biology. 2 main branches: zoology and phytogeography (plants)
What are the major urban centers of Australia?
1. sydney (3.7 million)
2. melbourne (3.3 million)
3. canberra (342,000)
What are 85% NZ's people?
What are some things that Australia and NZ have in common?
1. british heritage
2. challenges of distance and remote location
3. high % urbanization
4. indigenous people concerns
5. excellent quality of life
The Subtropical Convergence
sharply defined by temperature, salinity, chemistry and marine life
The Southern Ocean lies where?
in between antarctica and the subtropical convergence
What is significant about the Southern Ocean?
it is the 4th largest ocean at 13.7 million square miles. and contains world's biggest ocean current, a thousand times the flow of the amazon.
Who claims Antarctica?
many different countries who are interested in it's mineral wealth