Chapter 3: Sound

Topic 1: Sound is produced by a vibrating body.

Topic 2: Musical instruments produce sound

Topic 3: Sound produced by humans

Topic 4: Sound needs a medium for propagation

Topic 5: We hear sound through our ears

Topic 6: Wave length , amplitude, time Period and frequency of a sound

Topic 7: Loudness of sound

Topic 8: Pitch of sound

Topic 9: Music and noise

Topic 10: Audible and inaudible sound

Topic 11: Noise pollution

Topic 12: How to control noise pollution

Multiple choice questions

Question and answers

Note book

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