KIDS QUIZ
SPACE EXPLORATION
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
harsh temperatures
|
|
is an airless vacuum
|
|
heavy equipment
|
|
None of the above
|
Detailed explanation-1: -If an astronaut is exposed to a space vacuum without protection, other nasty stuff would happen, too. Without atmospheric pressure to balance things out, the unfortunate space traveler’s final breath would expand in his or her lungs, tearing the delicate gas-exchange tissues that line them.
Detailed explanation-2: -Contrary to how the lungs are supposed to function at atmospheric pressure, oxygen diffuses out of the bloodstream when the lungs are exposed to a vacuum. This leads to a condition called hypoxia, or oxygen deprivation.
Detailed explanation-3: -Outer space is not completely empty; it is a near-perfect vacuum containing a low density of particles, predominantly a plasma of hydrogen and helium, as well as electromagnetic radiation, magnetic fields, neutrinos, dust, and cosmic rays.
Detailed explanation-4: -Vacuum cleaners work by creating a pressure difference-if there is no pressure, they do not work. Therefore, the vacuum cleaner will not work in space.