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Why do we hear thunder after we have seen lightning? How is loudness measured? Which part of the ear hears sound? Readers will have fun finding the answers to these and other questions about sound in this bright and lively book.
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Why do we hear thunder after we have seen lightning? How is loudness measured? Which part of the ear hears sound? Readers will have fun finding the answers to these and other questions about sound in this bright and lively book.