The Plastic Brain


Soil Liquefaction

Soil liquefaction occurs during earthquakes, causing a quicksand-like bog which can topple buildings and swallow cars.

Liquefaction occurred during the recent Christchurch earthquake

Videos of the 2011 Christchurch earthquake liquefaction can be found here (during) and here (aftermath).

I got the idea for a soil liquefaction demonstration from the brilliant ASTA resources for the Year 9 plate tectonics unit. The instructions for the demonstration are in Lesson 4 on Earthquakes.

It worked very well. There are before and after shots below, and then a video.

IMG_1218b IMG_1220

Left: Before the earthquake. The building stands tall. Right: The building has collapsed, and is half submerged.