What makes quicksand work?

Answer 1

Quicksand is tiny round granuals of sand suspended in water bring forced up from below. When you try to pull your leg out, it just pulls you in lower. The key is to lie down, float to the top and roll off.

Answer 2

Quicksand is a hydrocolloid gel consisting of fine granular matter (such as sand or silt), clay, and salt water. It was commonly believed that the behavior of quicksand was due solely to saturated or supersaturated suspensions of granules in water. Pressure from underground sources of water would separate and suspend the granular particles, reducing the friction between them. As of September, 2005 it has been shown that the presence of salt that is largely responsible. The stability of the colloidal quicksand is compromised by the presence of salt, increasing the likelihood of sand flocculation and the formation of the high viscosity regions of the sediment responsible for the quicksands "trapping" power.When unperturbed, it often appears to be solid; however, even a minor (less than 1%) change in the stress on the quicksand will cause a sudden decrease in its viscosity.

Answer 3

Liquefaction


http://en.wikipedia.org/wiki/Liquefaction

Answer 4

There's actually no such thing as quick sand as you might have seen it in movies. The quick sand people are referring too is a combination of sand and water, with the grains of sand being a certain size.

Answer 5

Moisture and fine grain sand or dirt. It's just deep mud.

Answer 6

gravity

Answer 7

a deep black hole !