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According to Plate Tectonics theory Earth plates move due to cyclones. Earth plates move due to convection cell hypothesis Earth plates move due to wind storms. Earth plates move due to intense heat of the earth core. How many stations are required to estimate the Hypo-central distance of an earthquake One station Two stations Three stations The Amplitude of ground shaking from an earthquake decreases with increasing epicentral distance decreagian with increusing pagnitude af earthquake Erreases Teil ideasing episential distance increases with increasing magnitude of earthquake

Magnitude of an earthquake is estimated from difference in arrival times of p and s waves amplitude of seismic waves physical parameters of the fault One unit increase in magnitude scale corresponds to 32 fold increase in energy released from earthquake corresponds to 10 fold increase in amplitude of ground shaking corresponds to 1 fold increase in amplitude of ground shaking corresponds to 20 fold increase in energy released from earthquake