1.

When kept afloat by a life jacket, survival time in water at 15°C is A. Usually 12–24 hours. B. Limited by muscular fatigue. C. Extended if many layers of clothing are worn. D. Extended by swimming gently rather than floating motionless. E. More prolonged in fat than in thin persons.

Answer»

A. False It is usually under two hours. 

B. False It is limited by hypothermia. 

C. True This improves insulation by trapping layers of water around the body to form a stable micro climate.

D. False Swimming increases heat loss by disturbing the micro climate. 

E. True Due to better thermal insulation by the superficial fat.



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