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At that level of density, sinking beyond about waist height in quicksand is impossible. Even objects with a higher density than quicksand will float on it if stationary. Aluminium, for example, has a density of about 2.7 grams per cubic centimeter, but a piece of aluminium will float on top of quicksand until motion causes the sand to liquefy. [3]
Dry quicksand is loose sand whose bulk density is reduced by blowing air through it and which yields easily to weight or pressure. It acts similarly to normal quicksand, but it does not contain any water and does not operate on the same principle. Dry quicksand can also be a resulting phenomenon of contractive dilatancy.
Quicksand forms when water saturates an area of loose sand, and the sand is agitated. When the water trapped in the batch of sand cannot escape, it creates liquefied soil that can no longer resist force. Quicksand can be formed by standing or (upwards) flowing underground water (as from an underground spring), or by earthquakes.
Then there’s the speed at which the water is thrashing through. The Drake is part of the most voluminous ocean current in the world, with up to 5,300 million cubic feet flowing per second.
In the "Sink or Float" YouTube game, Cookie Monster and his friend Emma ask for your help in testing whether five different objects will either sink or float in a tank of water.
Quicksand is a shear thinning non-Newtonian colloid that gains viscosity at rest. Quicksand's non-Newtonian properties can be observed when it experiences a slight shock (for example, when someone walks on it or agitates it with a stick), shifting between its gel and sol phase and seemingly liquefying, causing objects on the surface of the ...
Spoilers ahead! We've warned you. We mean it. Read no further until you really want some clues or you've completely given up and want the answers ASAP. Get ready for all of today's NYT ...
[1]: 8 If a victim's airway remains unobstructed, or they find an air pocket within the grain, they may be able to keep breathing and be rescued; [7] the 40–60% porosity of stored grain [17] makes it at least theoretically possible. [10]: 11 In one instance a trapped person was able to survive for three hours. [7]