We are asked to explain why scuba divers should never hold their breath when they ascend to the surface.
Explain why scuba divers should never hold their breath when they ascend to the surface.
For every _____ m of depth a diver descends in water, she experiences an additional 1 atm of pressure due to the weight of the water above her. The pressure regulator used in scuba diving delivers air at a pressure that matches the ______ pressure; otherwise, the diver could not inhale the air. For example, when a diver is at a depth of ____ below the surface, the regulator delivers air at a pressure of 3 atm to match the 3 atm of pressure around the diver (1 atm due to normal atmospheric pressure and 2 additional atmospheres due to the weight of the water at 20 m). Suppose a diver inhaled a lungful of air at a pressure of 3 atm and swam quickly to the surface (where the pressure drops to ____ atm) while holding her breath. What would happen to the volume of air in the lungs of the diver? Because the pressure ______ by a factor of three, the volume of the air in the lungs of the diver would increase by a factor of three, severely damaging her lungs and possibly killing her.
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