In real life, quicksand is called supersaturated sand and people who fall into it do not sink but rather stay afloat. That allows them to maneouver their way out of the trap, according to Maine ...

There you are walking in the desert and before you know it you're sinking into the sand and there's not a thing you can do about it. Quicksand – a favourite motif of legends, novels and movies.

Wet sand, an entirely different substance, supports weight quite well when undisturbed, but when piles are driven into it the whole mass suddenly liquefies and the piles sink. Quicksand is thus ...

and then compare that to the forces needed to escape from quicksand. The clip is also useful when discussing density, floating, sinking and Archimedes. Students could measure volume, mass and ...