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NCERT solutions for Science [English] Class 8 chapter 10 - Sound [Latest edition]

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NCERT solutions for Science [English] Class 8 chapter 10 - Sound - Shaalaa.com
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Solutions for Chapter 10: Sound

Below listed, you can find solutions for Chapter 10 of CBSE NCERT for Science [English] Class 8.


Exercises
Exercises [Pages 134 - 135]

NCERT solutions for Science [English] Class 8 10 Sound Exercises [Pages 134 - 135]

Choose the correct answer.

Exercises | Q 1. | Page 134

Sound can travel through ______.

  • gases only

  • solids only

  • liquids only

  • solids, liquids and gases.

Exercises | Q 2. | Page 134

Voice of which of the following is likely to have minimum frequency?

  • Baby girl

  • Baby boy

  • A man

  • A woman

Which of the following statements are true and which are false.

Exercises | Q 3. (a) | Page 135

Sound cannot travel in vacuum.

  • True

  • False

Exercises | Q 3. (b) | Page 135

The number of oscillations per second of a vibrating object is called its time period.

  • True

  • False

Exercises | Q 3. (c) | Page 135

If the amplitude of vibration is large, sound is feeble.

  • True

  • False

Exercises | Q 3. (d) | Page 135

For human ears, the audible range is 20 Hz to 20,000 Hz.

  • True

  • False

Exercises | Q 3. (e) | Page 135

The lower the frequency of vibration, the higher is the pitch.

  • True

  • False

Exercises | Q 3. (f) | Page 135

Unwanted or unpleasant sound is termed as music.

  • Ture

  • False

Exercises | Q 3. (g) | Page 135

Noise pollution may cause partial hearing impairment.

  • True

  • False

Fill in the blanks with suitable words.

Exercises | Q 4. (a) | Page 135

Time taken by an object to complete one oscillation is called ___________.

Exercises | Q 4. (b) | Page 135

Loudness is determined by the __________ of vibration.

Exercises | Q 4. (c) | Page 135

The unit of frequency is ______.

Exercises | Q 4. (d) | Page 135

Unwanted sound is called ______.

Exercises | Q 4. (e) | Page 135

Shrillness of a sound is determined by the ______ of vibration.

Exercises | Q 5. | Page 135

A pendulum oscillates 40 times in 4 seconds. Find its time period and frequency.

Exercises | Q 6. | Page 135

The sound from a mosquito is produced when it vibrates its wings at an average rate of 500 vibrations per second. What is the time period of the vibration?

Exercises | Q 7. (a) | Page 135

Identify the part which vibrates to produce sound in the following instrument.

Dholak

Exercises | Q 7. (b) | Page 135

Identify the part which vibrates to produce sound in the following instrument.

Sitar

Exercises | Q 7. (c) | Page 135

Identify the part which vibrates to produce sound in the following instrument.

Flute

Exercises | Q 8. (i) | Page 135

What is the difference between noise and music?

Exercises | Q 8. (ii) | Page 135

Can music become noise sometimes?

Exercises | Q 9. | Page 135

List sources of noise pollution in your surroundings.

Exercises | Q 10. | Page 135

Explain in what way noise pollution is harmful to humans.

Exercises | Q 11. | Page 135

Your parents are going to buy a house. They have been offered one on the roadside and another three lanes away from the roadside. Which house would you suggest your parents should buy? Explain your answer.

Exercises | Q 12. | Page 135

Sketch larynx and explain its function in your own words.

Exercises | Q 13. | Page 135

Lightning and thunder take place in the sky at the same time and at the same distance from us. Lightning is seen earlier and thunder is heard later. Can you explain?

Solutions for 10: Sound

Exercises
NCERT solutions for Science [English] Class 8 chapter 10 - Sound - Shaalaa.com

NCERT solutions for Science [English] Class 8 chapter 10 - Sound

Shaalaa.com has the CBSE Mathematics Science [English] Class 8 CBSE solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. NCERT solutions for Mathematics Science [English] Class 8 CBSE 10 (Sound) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.

Further, we at Shaalaa.com provide such solutions so students can prepare for written exams. NCERT textbook solutions can be a core help for self-study and provide excellent self-help guidance for students.

Concepts covered in Science [English] Class 8 chapter 10 Sound are Properties of Sounds, Noise and Music, Noise Pollution, Sound Produced by Humans, Propagation of Sound, Human Ear, Sound, Production of Sound, Sound and Music, Sound Need a Medium to Travel, Characteristics of a Sound Wave, Oscillator, Oscillation and Oscillatory Motion, Loudness and Intensity, Pitch (or shrillness) and frequency, Audibility and Range, Properties of Sounds, Noise and Music, Noise Pollution, Sound Produced by Humans, Propagation of Sound, Human Ear, Sound, Production of Sound, Sound and Music, Sound Need a Medium to Travel, Characteristics of a Sound Wave, Oscillator, Oscillation and Oscillatory Motion, Loudness and Intensity, Pitch (or shrillness) and frequency, Audibility and Range.

Using NCERT Science [English] Class 8 solutions Sound exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in NCERT Solutions are essential questions that can be asked in the final exam. Maximum CBSE Science [English] Class 8 students prefer NCERT Textbook Solutions to score more in exams.

Get the free view of Chapter 10, Sound Science [English] Class 8 additional questions for Mathematics Science [English] Class 8 CBSE, and you can use Shaalaa.com to keep it handy for your exam preparation.

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