Question

when does Soil liquefaction occur?

Answer 1

Soil liquefaction describes a phenomenon whereby a saturated or partially saturated soil substantially loses strength and stiffness in response to an applied stress, usually earthquake shaking or other sudden change in stress condition, causing it to behave like a liquid.
A state of 'soil liquefaction' occurs when the effective stress of soil is reduced to essentially zero, which corresponds to a complete loss of shear strength.
http://en.wikipedia.org/wiki/Soil_liquefaction

Answer 2

yeah ok but which one of these would it be? A. seismic vibrations impact only the inner core of Earth.
B. seismic vibrations cause the ground to act like a liquid.
C. seismic vibrations have no impact on topsoil.
D. seismic vibrations pollute the entire atmosphere.

Answer 3

B.?

Answer 4

Yeah, B is the answer.

Answer 5

thanx

Answer 6

welcome :)