EESA06H3 Chapter 3: Chapter 3-earthquakes
18 Apr 2016
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Document Summary
Cause: sudden release of energy stored in the rocks beneath earth"s surface. Seismic waves: wave of energy produced by an earthquake. When rocks break: waves of energy are released & sent out through earth. Result of sudden release of energy when rock breaks: may cause one huge mass of rock to slide past another mass of rock into a diferent relaive posiion. Reasons for trembling and shaking during an earthquake: seismic waves. Elasic rebound theory: classic explanaion of why earthquakes take place sudden release of progressively stored strain in rocks results in movement along a fault. Tectonic forces: deep seated internal forces act on a mass of a rock over many decades. Progress of rocks: iniially rock bend, lits or stretches does not cause rocks to break as the energy is stored eventually energy that is stored in the rocks exceeding the bending energy rock breaks suddenly cause of earthquake.
