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Sound (8th Grade Science)

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8th Grade Science At the end of this lesson, you will be able to: • understand that sound is caused by vibrations • know about the musical instruments • identify the sound from musical instruments • understand how sound is produced and propagated by humans • acquire knowledge whether sound requires a medium for propagation • understand the propagation of sound in liquids and solids • analyze the working of human ear • define amplitude, time period and frequency of a vibration • distinguish between loudness and Pitch • analyze the audible and inaudible sounds • differentiate between noise and music • understand about the noise pollution and its control measure


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