KIDS QUIZ
SPACE EXPLORATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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their vertebrae spread out
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they shrink a few inches
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their hair all falls out
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None of the above
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Detailed explanation-1: -Just like muscles, if you don’t use your bones, they will weaken. Bone loss occurs in the weightless environment of space because bones no longer have to support the body against gravity.
Detailed explanation-2: -Blood and other bodily fluids are pulled by gravity into the lower body. When you go to space, gravity weakens and thus fluids are no longer pulled down, resulting in a state where fluids accumulate in the upper body. This is why the face swells in space.
Detailed explanation-3: -Past studies have shown that when the spine is not exposed to the pull of Earth’s gravity, the vertebra can expand and relax, allowing astronauts to actually grow taller. That small gain is short lived, however. Once the astronauts return to Earth, their height returns to normal after a few months.