Editing Liquid Dirt (section)

== Why This Works ==

''Liquefaction'' is what happens when waterlogged soil is disturbed, either by an earthquake or other vibrations. Quicksand is a great example of liquefaction, since it appears to be solid until you start to step on it. then, because of the pressure on the sand due to your steps, the sand particles try to push together around the water that is mixed in. This causes the sand to separate, making where you step more water than sand, and causes you to start sinking. Liquefaction can also happen when low lying, wet areas have an earthquake. When the ground starts to shake, the weight from the objects on top of the soil start to press the ground unevenly. If the ground has a lot of water in it, then the soil particles will slide closer together, like with the quicksand, and can cause buildings and roads to start sinking into the ground!