why a dead body float on and living body sink in water ? - Study24x7
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roy piyush
29 Sep 2019 09:52 AM study24x7 study24x7

why a dead body float on and living body sink in water ?

Class 9
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  • roy piyush
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    Reply 01 Oct 2019 08:51 AM
  • Hridendra Srivastava
    • The dead body is denser than water hence it sinks. while at the bottom of the water, gases which are lighter than the water build up in the dead body make the body less dense. After some times (24 hrs) , the weight of the body becomes less denser than the water hence the body floats. Remember, the greater the density of a substance, the greater it ability to submerge in water.As the body sinks into deep water, the pressure of the water tends to compress gasses in the abdominal and chest cavities with the result that the body displaces less water as it sinks deeper and consequently becomes less and less buoyant, the further down it goes.Almost without exception, a dead body lying on the bottom of a river or lake will come to the surface again. This is due to gas formed in the body tissues as decay occurs. When enough gas has formed to inflate the tissues and distend the skin, the body becomes lighter than water and rises to the surface. This process is due to the action of bacteria within the body.

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    Reply 29 Sep 2019 04:59 PM
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