On average, a person living in the United States is exposed to 3.6 mSv of radiation each year.Space shuttle astronauts are exposed to about 25 rems of cosmic radiation during a mission.Roughly how does this quantity compare with the annual dose the astronaut would have received on the ground in the United States?( 1 Sv = 100 rems)

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Quizplus · Accepted Answer

25 rems is equivalent to 0.25 Sv (since 1 Sv = 100 rems). The average annual dose on the ground is 3.6 mSv, which is 0.0036 Sv. 0.25 Sv is a bit less than 100 times 0.0036 Sv.

On Average, a Person Living in the United States Is