Chapter9.2 More about Sound

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9.2 Features of Waves Amplitude, Frequency, wavelength and Speed.

9.2 Characteristics of Sound waves

9.2 Loudness and Pitch of Sound 1

9.2 Loudness and Pitch of Sound 2

9.2 Loudest and Quietest Sounds

9.2 Comparing sound intensity

9.2 Sound Volume

9.2 Decibel Scale

9.2 Change the frequency (Pitch) and Volume (Amplitude)
What is the highest frequency that you can hear?

9.2 Who can hear what frequencies ?

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