Earthquake Hazards Inquiry Activity 16.1 Date: Obain a mall plassic or paper cup

Question

Earthquake Hazards Inquiry Activity 16.1 Date: Obain a mall plassic or paper cup. Fill i ful of waner. Then withost moning the cope, shourdy gprinkle quarte sand grains inso the cup, allowing the grains to sia to the m of the coup Keep adding sand a Bude at a time juse until the sand rts tn the top of the wader Place eo or thre coins upright in the sand w they rescumble ensical walls. The cins are imeant w represene baildings cotucted on a subsrae of uncompacted sand. This is model I. Simulater an erhguake by apping the cop on a taldetop while you rotate the cup countercleox kwise happened to the vertical com in the unen wird wdiment of midd·hen nu îimiiland an arthquak 2. Now make m de12 Rmnr the coms from mell i, and pre-down ea the sedimen. n the cups compacted. You mighe need to drain some of the water from the cup becase you want the flat upper surface ol sand so be above the water level in the cup. Then place the coins into this compacted sedimevt pot n you placed them in model I earlier Simlate an arhgwake an you did for moxtel I. What happened so the verical coins in the compacted sediment of model 2 when you simulated an carthquake) S. Based on your experimental models 1 and 2, which kind of Earth material is more harardos to beaild on in carthquale prone regions compacted sediment or tuncompacied sediment? Jestialy your anser by citing esidence from your experimental models) 4 Consider the moist, compacted sedionent in model 2 Do you think this maserial would become ore hazardous or les harardous to build on if it became totaly satarated with water during a rainy season? To find out, design aned condact another experimental model of your osm. Calir modet &, describhe what you did, and esplain what you learned B REFLECT & DISCUSS Wnite a statement about wbether wet ompartel sand is stronges, weaker, or about the same strength as wet ane and, and what the reason for this i

Explanation / Answer

Wet compacted sand is more stable as compared to wet uncompacted sand as in the uncompacted sand the sand grains will try to arrange themselves when they were shaked during the time of an earthquake and hence due to this movement the buildings can collapse.

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