Question

Can sound travel through iron and water and empty space
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Answer 1

Answer:

Iron and water - Yes

Empty Space (out of earth)- no

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Answer 2

Answer:

sound can travel to iron and water.

sound can't travel through space.

sound always requires some sort of medium to propogate

space lacks medium as there is complete vacuum.

sound waves travel as vibrations. so there has to be something to vibrate for it to propogate. a medium fulfills this criteria.

also speed of sound is faster in solids than in liquids.