Physical Results of Earthquakes. They Shape Our Landscape  As plates move, we may feel these movements as earthquakes  If there were no plate motions,

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Presentation transcript:

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

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

Folds  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 discussion  Video of liquefaction in Japan; video Tokyo Park Videovideo

Landslides  Earthquakes trigger many landslides, particularly in the rainy season  Video of landslides – general Video  Video of landslide – Mt. St. Helens (lahar) Video  Graphic showing Japan flooding Graphic Due to earthquake and landslide

Underwater Earthquakes  Tsunamis  Video Japan 2011, raw footage Videoraw footage  Video Indonesia 2004 Video  Deaths due to Earthquakes/TsunamisEarthquakes/Tsunamis

Read  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 you think of Masahiro? How do you think you would have reacted under the same circumstances?

 Aftershock: A smaller earthquake that follows a more powerful earthquake in same area.  Liquefaction: A process by which the shaking of the ground causes loose, wet soil to act like a liquid.  Tsunami: A water wave caused by an earthquake, volcanic eruption or landslide.