1. LANDSLIDES, EARTHQUAKES AND TSUNAMISExamples of Mass Movement

2. Landslides Landslide is the sliding down of a mass ofearth or rock from a mountain or cliff(Georgina) Landslides often occur after heavy rain (Jess) Landslides could be caused by an earthquake(Anjali) Landslides can also be caused by humanactivity (Ms Williams) 3. Protecting against landslidehazard It may be possible to predict a landslide basedon previous events and current weatherconditions (Yasmeen) Planting trees and shrubs may help tostabilised ground (Cameron) Building barriers could protect people (Nika) Building zones and codes could help to keephouses safer (Danielle) 4. An example of a landslide:Thredbo 1997 Two ski lodges weredestroyed 18 people killed Caused bysuspected leakingunderground pipesand a poorlymaintained road 5. Earthquakes Caused by movement of tectonic plates(Danielle) Large tremors felt on the earths surface.(Small earthquakes are called tremors). (Mya) Duration of earthquake is dependent on themovement of broken rocks between tectonicplates and the size of the tectonic movement(Yasmeen) Earthquakes are measured on the RichterScale (Cameron) 6. Protecting against earthquakehazard Serious earthquakes arent common inAustralia because of our location on thecontinental plates (Scott) Its difficult to predict earthquakes, butseismologists do monitor activity (Yasmeen) It is possible to build buildings that are bettersuited to withstand an earthquake (Mya) 7. An example of an earthquake:Newcastle 1989 5.6 on the Richterscale 13 people werekilled 8. Tsunami Occur as a result of a shift in tectonic platesunder or near the ocean (Paige & Scott) The waves radiate from the epicentre in alldirections; the further they travel, the weakerthey get. (Forbes) Australias risk of tsunami is relatively low, dueto our location. Signs to watch for: shaking ground; watch forreceding water; listen for the roar 9. Protecting against tsunamihazard Bouys in the water to transmit messagesnotifying of higher ocean movement. (Nika &Inga) Planning regulations, to reduce number ofhouses in areas likely to be impacted bytsunami (Mya) If warned, move to higher ground (Forbes) 10. An example of a tsunami:Indian Ocean Boxing Day 2004 Largest, mostdestructive tsunamion record Over 200.000 peoplekilled Indonesia was mostbadly effected; muchof south-east Asiawas impacted upon;countries as far awayas Africa were also hit