Earthquakes - Earthquakes(ch 11 Why do we care 1 Death and...

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Earthquakes (ch 11) 01/04/2008 11:02:00 Why do we care? 1. Death and destruction o Shaking o Fire o Falling into cracks/fissures o Building collapse o Most people die in earthquakes because of buildings falling o 250,000 people died in the 2004 indian ocean tsunami (result of an  earthquake under the ocean) 2. Mountain building / earth’s internal structure Seismology: study of earthquakes o Where and when could earthquakes occur? o How big and damaging are they? o What do earthquakes tell us about the earth? What is an earthquake? A vibration of earth produced by rapid release of energy. Waves(energy) radiate in all directions from the focus.  The focus is a point  on a fault plane. Epicenter is point on the surface above focus (LOOK AT SLIDE) Earthquakes occur primarily on fault planes (strike – slip; dip-so PLATE  BOUNDARIES o
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