KIDS QUIZ
SPACE EXPLORATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Velcro to strap equipment down.
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Sign language
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Radios
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Writing letters to each other
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Detailed explanation-1: -Astronauts have devices in their helmets which transfer the sound waves from their voices into radio waves and transmit them to the ground (or other astronauts in space).
Detailed explanation-2: -An intercom is a special device that allows astronauts to talk directly to one another without having to broadcast their conversation to the whole world. It’s a great way for them to communicate privately, and it can be used on space missions when astronauts need to coordinate with one another.
Detailed explanation-3: -Space has no air. Since sound waves require a material medium to propagate, therefore, astronauts cannot talk to each other in space. However, radio waves do not require any material medium for propagation and hence can be picked by the radio receiver.