Physical Results of Earthquakes

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Physical Results of Earthquakes

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Physical Results of Earthquakes


They Shape Our Landscape

As plates move, we may feel these movements as earthquakes

If there were no plate motions, our planet would not look like home

There would be no mountains, no valleys, no plateaus

More than disasters on the human scale


Earth Shaking = Earth Shaping

Earthquakes and other tectonic activities have been occurring for as long as the Earth has existed.

Events range from small cracks in the soil to the raising and lowering of huge chunks of lithosphere

Happens over long periods of time



Where rock is strained beyond limit, it will fracture, and the rock mass on either side will move abruptly.



Accumulated stress and strain within rocks of the lithosphere may cause great warps or folds in rock layers.


Soil Liquefaction

Much of the dollar damage due to earthquakes result from liquefaction Table group exploration and discussionVideo of liquefaction in Japan; video Tokyo Park



Earthquakes trigger many landslides, particularly in the rainy seasonVideo of landslides – generalVideo of landslide – Mt. St. Helens (lahar)Graphic showing Japan floodingDue to earthquake and landslide


Underwater Earthquakes

TsunamisVideo Japan 2011, raw footage Video Indonesia 2004 Deaths due to Earthquakes/Tsunamis



Read “I survived a tsunami”

Complete the worksheet on one side to order the events

On the back, answer the questions: “

In what ways did Masahiro exhibit courage?” What do


think of Masahiro? How do




would have reacted under the same circumstances




A smaller earthquake that follows a more powerful earthquake in same area




A process by which the shaking of the ground causes loose, wet soil to act like a liquid.



A water wave caused by an earthquake, volcanic eruption or landslide.

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