What's That Sound? - Lesley, John
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Have you ever wondered how sound gets from the place where it is made, and travels to your ears, where you hear it? Sound is not something you can see. This is because sound is a transfer of energy. Is sound the same in outer space as it is on Earth, and how do astronauts hear each other?

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Produktbeschreibung
Have you ever wondered how sound gets from the place where it is made, and travels to your ears, where you hear it? Sound is not something you can see. This is because sound is a transfer of energy. Is sound the same in outer space as it is on Earth, and how do astronauts hear each other?
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Autorenporträt
John Lesley was an experienced science teacher before becoming an author.