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Unit 6 - Week 5
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Course outline
How to access the portal Unit 2- Week 1 Unit 3- Week 2 Unit 4- Week 3 Week 4 Week 5
Week 6 Lesson 21:
Ground Effects and Evaluation of Earthquake Hazards Part III Lecture 22:
Liquefaction and Related Geological Features Lecture 23:
Motoring Seismic Activity Part I
Lecture 24:
Motoring Seismic Activity Part I
Quiz : Assignment 5 Assignment 5 Solution Feedback For Week 5
Due on 2019-03-06, 23:59 IST.
1) 1 point
2) 1 point
3) 1 point
Assignment 5
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The ancient river __________ debouched in the Arabian sea while through Rajasthan and Kachchh regions:
Indus Euphrates Ganga Sarasvati
No, the answer is incorrect.
Score: 0
Accepted Answers:
Sarasvati
Kachchh is characterized as the _______________ region but falls in seismic zonation________ , which means the area is seismically very active.
Stable, IV Active, IV Stable, V Active, V
No, the answer is incorrect.
Score: 0
Accepted Answers:
Stable, V
The earthquake secondary features which are common in Kachchh are ____________.
Sand Blows Fault Scarps Strath Terraces Sag Ponds
No, the answer is incorrect.
Score: 0
Accepted Answers:
Sand Blows
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Natural Hazards Part 1 - - Unit 6 - Week 5 https://onlinecourses.nptel.ac.in/noc19_ce14/un...
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5) 1 point
6) 1 point
7) 1 point
8) 1 point
The cohesiveless nature of sediments from the combination of _______ and ________ that led to the formation of sand dikes during liquefaction.
Clay, Silt Sand, Silt Sand, Clay None of the above No, the answer is incorrect.
Score: 0
Accepted Answers:
Sand, Silt
Liquefaction features won't develop at greater depths because of increase in _____________.
Pore water pressure Overburden pressure Shear stress
Normal effective stress No, the answer is incorrect.
Score: 0
Accepted Answers:
Normal effective stress
With ___________ in the thickness of the ___________ layer more ground accelaration will be required to liquefy the sediments.
increase, capping decease, underlying increase, underlying similar, capping No, the answer is incorrect.
Score: 0
Accepted Answers:
increase, capping
Increase in the ____________ results into sudden movement of sediment blocks causing ____________.
overburden, faulting
normal effective stress, lateral spreading pore water pressure, lateral spreading shear stress, thrust faulting
No, the answer is incorrect.
Score: 0
Accepted Answers:
pore water pressure, lateral spreading
Liquefaction features caused by an earthquake of around 7 magnitude would be around ___________ of km.
tens hundreds
Natural Hazards Part 1 - - Unit 6 - Week 5 https://onlinecourses.nptel.ac.in/noc19_ce14/un...
2 of 3 Friday 10 May 2019 10:25 AM
9) 1 point
10) 1 point
thousands None of the above No, the answer is incorrect.
Score: 0
Accepted Answers:
hundreds
The earthquake hazard assessment studies started after the occurrence of ____________
earthquake.
2015 Gorkha 1897 Assam 2001 Bhuj 1905 Kangra Valley No, the answer is incorrect.
Score: 0
Accepted Answers:
1897 Assam
The ________ gas escape through the newly formed cracks with __________ in electrical resistivity and thus increasing the microseismicity accompanied by foreshocks
nitrogen, increase oxygen, decrease radon, decrease helium, increase No, the answer is incorrect.
Score: 0
Accepted Answers:
radon, decrease
