Question 36
EasyOriginal questionSound cannot travel through
Show the answer and explanation
CorrectNot quiteAnswer C
Correct answer: C
Explanation
Sound is a mechanical wave: it needs particles of a medium to pass the vibration on.
A vacuum has no particles, so sound cannot cross it. That is why astronauts on a spacewalk talk by radio.
- Concept
- Sound needs a medium
- Typical timeTypical
- 35 s
- Your timeYours
- —
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