Understanding Soil Liquefaction

Which of the following regions is NOT mentioned as being affected by soil liquefaction?

• Christchurch

• Kobe

• San Francisco

• Tokyo

What happens to sand particles during an earthquake that leads to soil liquefaction?

• They expand and create more air gaps.

• They are squeezed together, forcing water upwards.

• They dissolve in water.

• They become more solid and compact.

What is the effect of soil liquefaction on structures like houses?

• They float on the surface.

• They become more stable.

• They are unaffected.

• They sink into the ground like quicksand.

Which method is NOT mentioned as a solution to prevent soil liquefaction?

• Removing air gaps in the soil.

• Building on a slope to avoid water accumulation.

• Using machines to vibrate and compress the soil.

• Driving piers or piles for a stable foundation.

How can the soil be prepared before construction to prevent liquefaction?

• By using large machines to vibrate and compress the soil.

• By building lightweight structures.

• By adding more water to the soil.

• By planting trees to stabilize the ground.