What is the logic behind quick sand?



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    Quicksand is made up of very fine particles of sand or silt as well as salt water. Under a column of sand in the ground, water may circulate using convection, going slowly up and down, bringing the particles of sand with it. However, the water never reachers the top, so the sand on the surface looks dry & can support a small amount of weight. Since there is not a lot of friction, larger amounts of weight cause the sand to act more like a liquid.

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