Author Question: Liquification, where normally solid material behaves more like a fluid during an earthquake, occurs ... (Read 68 times)

skymedlock · **on:** Feb 28, 2020

Question 1

Felt earthquakes usually last for ________.
◦ 10 to 60 seconds
◦ 1 to 10 minutes
◦ 1 to 10 seconds
◦ less than 1 second (they are instantaneous)

Question 2

Liquification, where normally solid material behaves more like a fluid during an earthquake, occurs because ________.
◦ friction from the vibrations melt rock and produce magmas
◦ pore spaces between particles in unconsolidated sediments close and displace fluids
◦ cracking in the rocks allows fluids to flow into the area and increase the amount of liquids in the subsurface
◦ rock particles dissolve and mix with the fluids in the subsurface to become a liquid

xiaomengxian · **Reply #1 on:** Feb 28, 2020

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