When standing on a beach, feet sink into the sand due to the presence of water, which lowers the density of the sand. Dry sand is tightly packed, providing minimal give, while water creates spacing between sand particles, allowing them to move freely. This mixture of sand and water becomes less dense than the human body, resulting in sinking. This phenomenon is related to quicksand and can be further explored through the concept of soil liquefaction.
PREREQUISITESGeotechnical engineers, environmental scientists, educators, and anyone interested in the physical properties of sand and soil behavior in water.
abhiroop_k said:why do one's feet get absorbed into sand on a beach when one stands in the water??