Activity: Types of Earthquake Hazards GROUND RAPTURE 1. When does ground rapture occur? Ans: when movement on a fault breaks through the surface, occurs suddenly during as earthquake, slowly in the form of fault creep 2. Where does rapture follow? Why? Ans: in preexisting faults due to weakness of that zone GROUND SUBSIDENCE 1. Define ground subsidence. Ans: ground subsidence is the lowering of the land surface 2. What are the factors that causes ground subsidence? Ans: sinkhole, underground mine collapse, major earthquake LIQUEFACTION 1. Describe liquefaction. Ans: liquefaction is a phenomenon whereby a saturated or partially saturated soil substantially loses strength and stiffness in response to an applied stress 2. What causes soil liquefaction? Ans: earthquake or other sudden changes in stress condition, causing it to beh...
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