Liquefaction

The video explains how mud can emerge from the ground due to liquefaction, a process where solid soil behaves like a liquid under certain conditions, such as during an earthquake. This phenomenon is more common in wet, sandy soils. The video details how earthquakes cause the soil to lose its structure, leading to flooding and damage. It also highlights efforts by engineers to develop techniques to prevent such occurrences in the future.

What is the process called when solid soil behaves like a liquid under certain conditions?

• Compaction

• Sedimentation

• Erosion

• Liquefaction

In which type of soil is liquefaction more commonly found?

• Wet, sandy soils

• Rocky soils

• Dry, loamy soils

• Clayey soils

What happens to the water molecules in sandy soil during an earthquake?

• They evaporate

• They freeze

• They break free

• They remain trapped

What natural disaster is used as an example of liquefaction in the transcript?

• Hurricane Katrina

• The Kobe earthquake

• Mount St. Helens eruption

• The Indian Ocean tsunami

What are engineers currently developing to prevent soil liquefaction?

• Earthquake prediction systems

• Techniques to stabilize soil

• Advanced weather forecasting

• New building materials