4.Buildings collapse due to earth quake why?
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Bigger earthquakes have more energy which is released in longer-period seismic waves, at lower frequencies. ... If the frequency of ground motion matches the natural resonance of the building, then there is a lot more shaking and potential damage to that building.” But even this can become quite complicated.
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Buildings collapse in an earthquake because of the vibration of the ground. ... During earthquakes the vibration of ground can cause the liquefied sand and excess water to force its way to the ground surface from several meters below the ground. Soil naturally has its own strength and stiffness(resistance to be deformed)
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