KIDS QUIZ
SPACE EXPLORATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It helps them pass time to keep from being bored
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It’s a requirement from NASA in case the viewing public is watching
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It helps their muscles and bones from becoming brittle or weak
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Competition between the USA and other countries is at an all time high
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Detailed explanation-1: -That means that without exercise, the astronauts’ bones would be more fragile and their muscles weaker after time spent in space. If astronauts didn’t exercise while they were in space, their bodies would experience major loss in: muscle mass. bone density.
Detailed explanation-2: -Bone loss occurs in the weightless environment of space because bones no longer have to support the body against gravity. On Earth, gravity applies a constant mechanical load to the skeletal system, that causes healthy bones to maintain a certain density so that they are able to support the body.
Detailed explanation-3: -Because astronauts work in a weightless environment, very little muscle contraction is needed to support their bodies or move around. Without regular use and exercise our muscles weaken and deteriorate. It’s a process called atrophy.