Sound Class 9 Revision Notes
The chapter of Sound in Class 9 Science is essential due to the role it plays in making students understand it. It is natural that you hear a number of sounds every day that come from a lot of different sources. All this is a mixture of sounds from humans, machines, animals and more. However, you can easily identify the sound from its source. Thus, Sound class 9 notes will let you understand how you are able to do so. It also comes in handy in learning all about the human ear. Furthermore, it explains its functions and more.
Not only that, but it also explains how different beings communicate with each other using sounds. Sound class 9 notes will be very useful in discussing the use of energy in producing any kind of sound. Similarly, you will be able to identify the kind of energy you will use for producing any sound. The transmission of sound from one medium to another and how we perceive it will also be explained here. Thus, it carries a lot of importance.
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Sub-topics covered under Sound –
- Human Ear– This section will help students in learning everything they need to know about the human ear and its functioning.
- Production and Propagation of Sound– This sub-topic will answer questions like how does sound propagate and how does it get produced.
- Reflection, Transmission, and Echo– Students will learn about how sound reflects, transmits and echoes in different locations and mediums.
- Characteristics of Sound– Sounds are audible to use through its characteristics and you will learn the same over here.
You can download CBSE Class 9 Science Chapter 12 Revision Notes by clicking on the download button below
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