Monday, February 28, 2011

1.6 Australia's climate and vegetation

1. Climate is the pattern of weather that is expected in a particular place. Patterns of climate and vegetation are closely related because climate is the main factor that determines where plants can grow.
2. The Earth receives more of the Sun’s energy at the Equator than at the poles so temperatures are highest at the Equator and decrease as latitude increases.
3. Typical summer weather map- Low pressure in the north, High pressure in the south. Typical winter weather map- High pressure in the north, Low pressure in the south.
4. currents—Currents from nearer the poles bring cooler conditions and those from nearer the Equator bring warmer conditions.
5. Relief is when the temperature decreases with height. Moist air that is forced to rise by mountains cools, and the water vapour condenses, producing increased cloud cover and precipitation. Highland areas are cooler and wetter than lowland areas.
6.
a. Average climate statistics assist farmers to tell them when it is most suitable to plant their crops as they may want to plant them the month before a huge rainfall occurs. This also helps determine when to harvest their crops. For example you may need to plant in winter and the best time to harvest is the first of spring.
b. Tourists may want to look at the forecast/ climate predicted if they are considering going away to a sunny place as they don't want it to rain.
7. Where there is a lot of vegetation, forest and woodland can be very hot and humid. Then there is the places where there is only a bit of shrub land, pasture and cropping and this is where there is sub tropical conditions, hot dry summer, warm dry winter.
8.
a. Hobart- average of precipitation is 47.43 rainfall (mm) and the average temperature is 12.4125 Celsius.
Darwin- average of precipitation is 142.4 rainfall (mm) and the average temperature is 27.5875 Celsius.
b.
9.
a. Alice Springs has the greatest temperature range as shown in source 1.29.
b. Melbourne has the most seasonal rainfall as by average, Melbourne is around 50 mm and Alice Spring is close to 30 mm of rainfall.

Wednesday, February 23, 2011

1.5 Australia's major landforms and drainage basins

1. The Western Plateau, the Central Lowlands and the Eastern Highlands.
2. The Australian Alps stretch from the Brindabella Range to the Baw Baw Range.
3. The Alps have been subjected to weathering and erosion.
4. Located 335 km south- west of Alice Springs.
5. Uluru lies on the southern edge of an area known as the Amadeus Basin. For millions of years sediments collected under shallow seas in this depression and were compressed into rock. One of the amazing features of Uluru is the way that it appears to change colour throughout the day. This is due to the way in which the
Sun’s rays pass through the atmosphere.
6. This is due to the way in which the Sun’s rays pass through the atmosphere.
7. An area of land that is drained by a river and its tributaries.
8. Murray Darling Basin, Lake Eyre Basin.
9. The Murray, the Darling and the Murrumbidgee.
10. A large amount of water is lost through evaporation.
11. The Finke River only flows on a few days each year.
12. The Franklin River flows for 125 km from the Cheyne Range to the Gordon River in the Tasmanian Wilderness. It has become synonymous with conservation since the 'Battle to save the Franklin' rescued it from damming for hydro- electric power in 1980's.
13. The federal election  and Labor Party supported the conservationists' campaign and they won, the leader  was Bob Hawke.
14. The Murray Darling Basin contains the three longest rivers in Australia, the Murray, the Darling and the Murrumbidgee.
The Darling and its tributaries drain the northern half of the Basin. They contribute 12 % of the flow to the Murray River.
The Murrumbigee and its tributaries drain central and southern NSW. They contribute 13 % of the flow to the Murray River.
The Murray and its tributaries upstream of the Murrumbigee junction drain central and northern Victoria and southern NSW. Under average conditions this region contributes 75 % of the flow to the Murray.
15.
 a. The western plateau has a massive block of igneous and metaphoric rock, with some rocks being over 3.6 billion years old. The region is regarded as relatively flat, as the average elevation is less than 500 metres. This is due to erosion, which has affected this region for millions of years.


The Eastern Highlands, also known as the Great Dividing Range, are a series of hills, valleys and mountains located to the west of the coastal plains. The mountains and hills in the Eastern Highlands were created through a number of processes. Most were created through folding and faulting. Some of the mountains are volcanic


The Central Lowlands account for 25 percent of the continent and are characterised by extremely flat, low-lying plains of sedimentary rock. The sedimentary rocks of the central lowlands were created by sediments, when the inner part of Australia was covered by an inland sea millions of years ago.
b.
i. Western Plateau
ii. Western Plateau
iii. Central Lowlands
iv. Eastern Highlands
v. Western Plateau
c
i. Musgrave Ranges
ii. Simpson Desert
d.
i. 0-200m
ii. 200-500m
iii. 500-1000m
16.
a. Finke River
b.
c. Copper creek
d.
e.

Tuesday, February 22, 2011

The earthquake in NZ

1. Summarize the major points of interest about the earthquake in NZ including relevant photos and/or videos.
       a. what caused the quake....geographical perspective
       b. where - epicentre and effected areas
       c. casualties
       d. major damage
       e. current concerns
       f. Give a paragraph about your reactions to the events.


The movement of the Oceania and Pacific plates were responsible for causing the earthquake. A strong earthquake shook New Zealand on Tuesday afternoon, according to reports.The 6.3-magnitude quake shook New Zealand's South Island. The quake struck 20 kilometres south east of Christchurch, at a depth of five kilometres. The New Zealand Herald reported that the quake's epicenter was Lyttelton with a depth of 5 kilometres. People in the area are being warned to expect aftershocks. Seventy-five people have been confirmed dead in earthquake-hit Christchurch, and 300 missing.

Sunday, February 20, 2011

1.4 Geographical perspective on the origins of Australia

1. The movement of the Earth's continents in a process known as continental drift.
2. The tectonic processes associated with plate margins that are responsible for creating major land form features.
3. Rodinia existed over 1 billion years ago.
4. Pangaea existed around 300 million years ago.
5. South America, Africa, India, Antarctica and Australia.
6. Australia is moving North at about 5cm per year.
7. Less than one million years old.
8. The aridity water is the main agent of erosion.
9. The study of landforms.
10. A geomorphologists studies landforms to determine the processes that form and transform them.

Thursday, February 17, 2011

Year 9: Australia's Large Coastline



Write a blog post explaining the positive and negative aspects of Australia having a long coastline and large EEZ. (give at least 5 dot points for each advantage/disadvantage).


Advantages: 

  • Fisheries 
  • Trade - transportation for various water levels that also allow trade along the coast. 
  • Tourism
  • Australia has the right to explore and use marine sources within the coastline.
  • Generation of electricity by tapping tidal waves.



Disadvantages:

  • More area to control.
  • Australia is separated from many countries.
  • Tsunami's
  • Habitat loss through erosion.
  • Loss of coastal land as a result of erosion.