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Topics Covered In Chapter Sound
Production Of Sound
Propagation Of Sound
Sound Needs A Medium To Travel
Sound Waves Are Longitudinal Waves
Characteristics Of A Sound Wave
Speed Of Sound In Different Media
Reflection Of Sound
Uses Of Multiple Reflection Of Sound
Range Of Hearing
Applications Of Ultrasound
Structure Of Human Ear
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Frequently asked Questions on CBSE Class 9 Science Notes Chapter 12: Sound
What is ‘Sound’?
The sensation perceived by the sense of hearing is known as Sound.
What is ‘Propagation of sound’?
Sound is a sequence of waves of pressure which propagates through compressible media such as air or water.
What is ‘Reverberation’?
Reverberation is the persistence of a sound after its source has stopped, caused by multiple reflection of the sound within a closed space.