Sunday, March 20, 2011

1.11 Questions 1-10, 13 and 14

1. Coal, Oil, and Gas.
2. Wind, sun and Hydro-electricity.
3. They are trying to make the the environment cleaner.
4. China, US, India and Australia.
5. It is proven that there is a coal reserve that is 76 million tonnes of coal.
6. It is estimated that there is enough gas until we run out in 2050.
7. It will use technology developed to power satellites and consist of fields of mirrors each covering 0.8 square kilometres.
8. Large turbines are turned by the wind generating electricity.
9. Advantages - It supplies 18000 households with their energy needs
                      - It will reduce greenhouse gas emissions for the next 25 years.
Disadvantages - waste of space
                       - if there is no wind no electricity is being created
                       - it is expensive to create such large objects.
10. They are all good ways of energy because all of them are renewable.
13. The main gas field is in south of QLD, north of NSW and in SA. The pipelines go everywhere but not in the north of WA.
14. a.i. $17 million
ii. $5.2 million
iii. $2.8 million
b.i. $25 million
ii. $6 million
iii. $2.7 million
c. Coal

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