Questions 2.2

2.2 QUESTIONS

1.   The movement of a mass of rock or sections of the Earth’s crust under the force of gravity.
2.    Heavy rainfall, vibrations from earthquakes and the undercutting of banks from waves or rivers.
3. Buildings and the construction of roads and rail ways can weaken hillsides, making them more vulnerable, and mining also contributes to the hazard.
4.   Earthquakes are movements of the Earth’s crust, and they are measured by the Richter Scale.
5.  Intra-plate tension where movements occur along cracks in the Earth’s crust.
6.  Australia receives one earthquake measuring over 5.5 on the Richter scale every 15 months. These cause minimal damage because of Australia rests on a tectonic plate, not next to one.
7.   The 1989 Newcastle earthquake killed 13 people and injured over 120. 30000 homes and 3000 building were affected and sustained serious damage and over 70000 buildings in the region sustained minor damage.
8. An earthquake is an underground movement while a landslide is above ground.
9.    A Tsunami is a massive wave usually caused by underwater earthquakes.
10.   An earthquake, landslide or volcano erupting.
11.   A Tsunami is caused by an earthquake occurring underwater and pushing a mass of water towards land, often with disastrous consequences

12.Shake, Drop, Roar

13.   A 9.3 Richter scale Earthquake off the west coast of Sumatra

14.   There are 23 automated earthquake monitoring stations. It took these stations 20 minutes to pick up the earthquake.

15.   The Tsunami grows taller and wider but slows down dramatically.

16.   The United Nations developed a Tsunami warning system for the Indian Ocean.

17.   Ted Bryant is a Wollongong University geoscience professor that has warned that Tsunami’s caused by New Zealand’s Alpine Fault could strike New South Wales as often as every 500 years.

18.  18. A)  15 degrees North and 90 degrees East

B) i) 2 hours ii) 10 hours iii) 4.5 hours iv)9 hours

19.We are at Thredbo after just 4 hours ago, a devastating landslide hit and destroyed everything in its path. Approximately 3500 tonnes of dirt and debris came hurtling down the slope destroying the Bimbadenn and Carinya Lodges, and killing 18 people. This has majorly affected the ski slopes and mountains that Thredbo exploits as its main source of income, as they have been closed due to the landslide and the damages that have been caused.

 20.