what is quick sand ... ?

Question

i have not seen sand move very quicky
i not seen sand move
please tell me what is quick sand ?

Answer 1

Quicksand is a hydrocolloid gel consisting of fine granular matter (such as sand or silt), clay, and salt water.

Answer 2

I live in a town next to the beach where there is quicksand, i know because i have sunk in it, it is also where the 21 chinese cocklers died.

Quicksand occurs where the granular structure becomes gel or mousse like with water, algae and air, which creates a gel like sand, very slippery, a bit like a mousse which looks solid but when you put a spoon into it you see it is full of air.

Quicksand is a hydrocolloid gel consisting of fine granular matter (such as sand or silt), clay, and salt water. 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. After the initial perturbation - such as a person attempting to walk on it - the water and sand in the quicksand separate and dense regions of sand sediment form; it is because of the formation of these high volume fraction regions that the viscosity of the quicksand seems to suddenly increase. In order to move within the quicksand, a person or object must apply sufficient pressure on the compacted sand to re-introduce enough water to liquefy it. The forces required to do this are quite large: to remove a foot from quicksand at a speed of one centimeter per second would require the same amount of force as "that needed to lift a medium-sized car

Answer 3

quicksand consists of either sand or clay and a liquid. there must be sand or clay stored at a place. when water or any liquid comes from under the sand and comes on top of the sand, the sand starts going down in the earth. if someone or any other object goes into the sand, it will get drowned. but the type of quicksand which u see in films is not true. very little people died in a quicksand. everybody can manage to survive in a quicksand. the deaths that u hear about people being drowned in quicksands happens when the person moves instead of relaxing which is the precaution to take when in a quicksand for further information u can watch the mythbusters' episodes.

Answer 4

Quicksand is a hydrocolloid gel consisting of fine granular matter (such as sand or silt), clay, and salt water. 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. After the initial perturbation - such as a person attempting to walk on it - the water and sand in the quicksand separate and dense regions of sand sediment form; it is because of the formation of these high volume fraction regions that the viscosity of the quicksand seems to suddenly increase. In order to move within the quicksand, a person or object must apply sufficient pressure on the compacted sand to re-introduce enough water to liquefy it. The forces required to do this are quite large: to remove a foot from quicksand at a speed of one centimeter per second would require the same amount of force as "that needed to lift a medium-sized car." [

Answer 5

Quicksand is a deep patch of sand that has become saturated so much with water that it turns mulchy. When a person or animal steps in it their weight puts them through the surface and they begin to sink. The more they struggle the quicker they sink, the best way is to spread your weight out as best you can (to spread the pressure acting on a particular area) and not move much, then hope someone comes along who can pull you out !!!.
It isn't really quick or moving, it's just wet sand that you can sink in.
If you go under the surface you can be killed by suffocation.

Answer 6

Quicksand is a hydrocolloid gel consisting of fine granular matter (such as sand or silt), clay, and salt water. 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. After the initial perturbation - such as a person attempting to walk on it - the water and sand in the quicksand separate and dense regions of sand sediment form; it is because of the formation of these high volume fraction regions that the viscosity of the quicksand seems to suddenly increase. In order to move within the quicksand, a person or object must apply sufficient pressure on the compacted sand to re-introduce enough water to liquefy it. The forces required to do this are quite large: to remove a foot from quicksand at a speed of one centimeter per second would require the same amount of force as "that needed to lift a medium-sized car." [1]

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 it is the presence of salt that is largely responsible.[1] 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 sediment responsible for quicksand's "trapping" power.

Quicksand is not as dangerous as depicted in many movies. As quicksand is rarely more than a few feet deep, there is usually little danger of sinking below the surface. Furthermore, even when the quicksand is deep enough, deliberate effort is required to sink below the surface. Quicksand is typically denser than the human body, meaning that a body is much more buoyant in quicksand than in water. Thus, the body will float quite easily in quicksand.

This was demonstrated in an episode of the TV series MythBusters and in an article in Nature. [1] The sand's higher density will gradually push a human body upward, eventually allowing one to paddle toward more solid footing. Typically, the greatest danger of getting stuck in quicksand comes from exposure, starvation, flash flooding, or tidal flooding.

Quicksand can be found inland (on riverbanks, near lakes, or in marshes) or near the coast. It can also form when an earthquake increases groundwater pressure, forcing the water to the surface and causing soil liquefaction.

One region notorious for its quicksands is Morecambe Bay, England. As the bay is very broad and shallow, a person trapped by the quicksand would be exposed to the danger of the returning tide, which can come in quite rapidly.

You could get more information from the link below...

Answer 7

Quick sand is common go to The Goodwin sands & notice what happens if you throw a object onto the sand ?if you ever fall into it do not struggle this will make the situation difficult.Keep calm & hope someone notices your plight.

Answer 8

Quicksand looks just like ordinary sand - nice and solid to tread on - but if you do put your weight on it, it will turn to gel and you will sink. The more you struggle, the more quickly you will sink into this watery/sandy mixture. Beware!

I'm wondering why this question is in the Botany section which should be reserved for questions about plants and their habitats!

Answer 9

water that moves up through sand and saturates it causing sand to become unsteady thus if walked on causes the person animal etc to sink into it

Answer 10

Quicksand is just ordinary sand that has been saturated with water and can no longer support any wight . Only your movements can dig yourself deeper.