Where does sound come from? What makes it loud or soft? High or low? Young scientists who explore this title will learn about sound waves, amplitude, frequency, and more through informative text and detailed special features.
Where does sound come from? What makes it loud or soft? High or low? Young scientists who explore this title will learn about sound waves, amplitude, frequency, and more through informative text and detailed special features.
Where does sound come from? What makes it loud or soft? High or low? Young scientists who explore this title will learn about sound waves, amplitude, frequency, and more through informative text and detailed special features.
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