How is sound produced? How does it travel from one place to another? How do we hear sound? Why are some sounds louder than others? NCERT Grade 8 Science Chapter 13, Sound provides answer to these questions. Sound is Produced by a Vibrating Body, Sound Produced by Humans, Sound Needs a Medium for Propagation, We Hear Sound through Our Ears, Amplitude, Time Period and Frequency of a Vibration, Audible and Inaudible Sounds, Noise and Music and Noise Pollution are some of the important topics covered in this chapter. This chapter describes about the Production of Sound, Sound Produced by Humans. The topics further include sound needs a medium to travel, sound waves are longitudinal waves, characteristics of a sound wave, speed of sound in different media.All these topics are explained with the help of practical activities, diagrams, out of the box information, and in between exercises.
NCERT Grade 8 Science Chapter 13, Sound discusses the difference between music and noise. Noise pollution, its causes, effects and control measure are discussed towards the end of the chapter.This chapter will take the students through the wonderful world of Sound. It will help them to not only develop a grip of the topic but also master the concepts that will help them to perform better. A foundation base for future complex topics, NCERT Grade 8 Science Chapter 13, Sound is easy to understand.
Get 100 percent accurate NCERT Solutions for Class 8 Science Chapter 13 (Sound) explained by expert Science teachers. We provide solutions for the questions given in Class 8 Science textbook as per CBSE Board guidelines from the latest NCERT book for Class 8 Science. The topics and sub-topics in Chapter 13 Sound are given below.
EX - 13.1 Sound is Produced by a Vibrating Body
EX - 13.2 Sound Produced by Humans
EX - 13.3 Sound Needs a Medium of Propagation
EX - 13.4 We Hear Sound through Our Ears
EX - 13.5 Amplitude, Time Period and Frequency of a Vibration
EX - 13.6 Audible and Inaudible Sounds
EX - 13.7 Noise and Music
EX - 13.8 Noise Pollution.
We cover all exercises in the chapter given below:-
Chapter 13 - 13 Questions with Solutions.
Other than given exercises, you should also practice all the solved examples given in the book to clear your concepts on Sound. Download the free PDF of Chapter 13 Sound and take the print out to keep it handy for your exam preparation.