1. Landslides are when a mass of rock or sections of the Earth’s crust moving caused from gravity.
2. Rainfall, earthquakes, waves or rivers can cause landslides.
3. Humans can contribute to landslides by roads on a hill or mining in weak areas.
4. Earthquakes are tension and shaking from plates on the Earth’s crust. They are measured by the Richter scale.
5. Intra-plate tension causes earthquakes.
6. Australia experiences earthquakes approximately once every 15 months for a 5.5 (Richter scale) earthquake. It has minimal impact on the community because it has no large effects on buildings, people etc.
7. The impacts were that other communities had to watch out for earthquakes in their own areas. It impacted the buildings, the lives of many and the community of people for years.
8. Landslides are on top of the earth’s crust, where earthquakes are under and cause landslides.
9. A tsunami is a giant wave that is caused by earthquakes in the ocean.
10. Sudden shifting in the tectonic plates, earthquakes and landslides will cause a tsunami.
11. A tsunami is formed by tension in tectonic plates, it will then rocket to land at an average 800 kph, it will then squeeze in height because of the shrinking depth of the water.
12. Shake Drop and Roar.
13. An Earthquake with a reading of 9.3 Richter reading.
14. There 23 stations and it took 20 minutes.
15. The tsunami compacts and grows in height as the depth shrinks.
16. The United Nations coordinated the development of a tsunami warning system in the Indian Ocean.
17. He is a geoscience university professor. He issued a warning for the Alpine Fault which is to go off in 100 years or so.
18.
a. 105’E, 10’N
b.
i. 2 hours
ii. 7-9 hours
iii. 5-6 hours
iv. 10 hours
19. The Meckering earthquake in Western Australia occurred on 14 October 1968 and measured 6.8 on the Richter scale. Railway lines were damaged and pipelines were ruptured, causing a total damage of $50 million. It is called a fault scarp, and was 37 kilometres long and 2.5 metres high.
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