Revision Notes For Class 9 Science Chapter 12 Sound

The chapter sound deals with teaching the basic concepts of sound like the production of sound, how sound propagates in different mediums, sound waves are longitudinal waves, what is the characteristic of a good sound, the speed of sound in different mediums. The reflection of sound has many form like it creates an echo, reverberation. After reading this chapter the student will also learn about the hearing range of a human, what are the application of ultrasound and the structure of a human ear. The revision notes for class 9 chapter 12 sound is given here for better preparation and understanding.

Class 9 Science Chapter 12 sound
Class 9 Science Chapter 12 sound
Class 9 Science Chapter 12 sound
Class 9 Science Chapter 12 sound
Class 9 Science Chapter 12 sound
Class 9 Science Chapter 12 sound
Class 9 Science Chapter 12 sound
Class 9 Science Chapter 12 sound
Class 9 Science Chapter 12 sound
Class 9 Science Chapter 12 sound
Class 9 Science Chapter 12 sound
Class 9 Science Chapter 12 sound
Class 9 Science Chapter 12 sound
Class 9 Science Chapter 12 sound

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Practise This Question

Sheetal's village receives rainfall less frequently. But whenever it rains, the intensity of rainfall is too high that the rainwater that falls on the ground flows away fast. This prevents the recharging of groundwater. Which amongst the following method can sheetal use to solve this problem?