Earthquakes and Society

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Presentation transcript:

Earthquakes and Society 12 - 3 Earthquakes and Society

Look out! Most people get hut in earthquakes due to collapsing structures. Landslides Fires Explosions Floods

Tsunamis Giant wave that forms after: Underwater earthquake Underwater eruption Landslide

Destruction Buildings on loose rock and soil will be more likely to fall. Buildings need to sway to absorb energy If it sways too much it may collapse

Earthquake Safety Learn how and where to turn off gas, water, and electricity Prepare ahead of time

Earthquake safety Stand in doorway or under a table Try to get outside Car – drive away from tall buildings and stay I car

Earthquake Warnings Scientist study past earthquakes in order to predict future quakes Still no truly reliable method of prediction Measure and monitor current faults

Seismic Gaps Area of low earthquake activity along faults Strong quakes in the past Sites of future earthquakes

Foreshocks Small earthquakes before a large quake Seconds or weeks before

Changes in Rock Tilting in rocks Magnetic properties Due to water build up Natural gas seepage