Liquifaction Lab During earthquakes, water under the surface mixes with soil above it and shifts around like a liquid. Buildings collapse and water can flood the surface.

Materials: 2 cups, plastic bowl, dirt, water Cut the bottom of one cup off. Place this cup upside down in a bowl. Fill dirt to around 1/3 full in upside down cup. Pour 100 ml of water into the bowl outside of the cup (it should get sucked up by the dirt in the cup. Let it sit a minute. Place a penny or other object on top of the dirt. Flick the side of the cup repeatedly until the water reaches the surface and the object is sucked in or tips over. Record observations and number of flicks. Change either the amount of sand or the amount of water and repeat the experiment. Record results. Do a third trial Write down your results and conclusion (what did you learn?)