These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. More free lessons at: www.khanacademy.org/video?v=-_xZZt99MzY In this video, David Santo Pietro explains some of the different properties of a sound wave. Topics that will be discussed are Amplitude, Period, Frequency, and wavelength.

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