Sound Question Answers: NCERT Class 8 Science

Welcome to the Sound Class 8 Science NCERT Solutions page. Here, we provide detailed question answers for Chapter 13 - Sound, designed to help students gain a thorough understanding of the concepts related to natural resources, their classification, and sustainable development.

Our solutions explain each answer in a simple and comprehensive way, making it easier for students to grasp key topics and excel in their exams. By going through these Sound question answers, you can strengthen your foundation and improve your performance in Class 8 Science. Whether you're revising or preparing for tests, this chapter-wise guide will serve as an invaluable resource.

  • Vibrating objects produce sound.
  • In humans sound is produced by vibration of the vocal cords.
  • Sound cannot travel in vacuum.
  • Sound can travel through a solid, liquid or a gas medium as well.
  • The vibration of sound are senses by the eardrum.
  • Eardrum is a stretched membrane.
  • Eardrum send signals to brain. This process is known as hearing.
  • Frequency of oscillation may be defined as the number of oscillation or vibrations in one second.
  • Hertz (Hz) is the unit of frequency.
  • The unpleasant and unwanted sound is called as noise. It may lead to noise pollution.
  • Many health hazards are produced by noise pollution.
  • Loudness of sound is called as amplitude or we can say the displacement of vibrating object from its main position is called amplitude.
  • Eardrum is a stretched membrane which separates the middle ear from the outer ear which vibrated to produce sound.
  • Larynx is known as the voice box which produces sound.
  • Loudness is the characteristics of sound which depends upon the amplitude.
  • Oscillation is the complete to and fro motion of an object about at its mean position.
  • Pitch is known as the flatness or shrillness of a sound.
  • Time period may be defined as the time taken by vibrating objects to complete one oscillation.
  • Vibration is the to and fro movement of a body.
  • Windpipe connects the larynx to the lungs, it is tube like structure of respiratory tract.

Download pdf of NCERT Solutions for Class Science Chapter 13 Sound

Download pdf of NCERT Examplar with Solutions for Class Science Chapter 13 Sound

Exercise 1 ( Page No. : 171 )

Key Features of NCERT Class 8 Science Chapter 'Sound' question answers :

  • All chapter question answers with detailed explanations.
  • Simple language for easy comprehension.
  • Aligned with the latest NCERT guidelines.
  • Perfect for exam preparation and revision.

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