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Chapters
2: Force and Pressure
3: Light
4: Heat
5: Electricity
▶ 6: Sound
7: Magnetism
8: Universe and Space Science
9: Matter around us
10: Changes around us
11: Air
12: Atomic Structure
13: Water
14: Acids and Bases
15: Chemistry in Everyday Life
16: Microorganisms
17: Plant Kingdom
18: Organisation of Life
19: Movements in Animals
20: Reaching the Age of Adolescence
21: Crop Production and Management
22: Conservation of Plants and Animals
23: Libre Office Calc
![Samacheer Kalvi solutions for Science [English] Class 8 TN Board chapter 6 - Sound - Shaalaa.com](/images/science-english-class-8-tn-board_6:5f2b1b2038084cf381bfa42c826a928c.jpg "Samacheer Kalvi solutions for Science [English] Class 8 TN Board chapter 6 - Sound")
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Solutions for Chapter 6: Sound
Below listed, you can find solutions for Chapter 6 of Tamil Nadu Board of Secondary Education Samacheer Kalvi for Science [English] Class 8 TN Board.
Samacheer Kalvi solutions for Science [English] Class 8 TN Board 6 Sound Exercises [Pages 69 - 70]
Choose the best answer.
Sound waves travel very fast in
air
metals
vacuum
liquids
Which of the following are the characteristics of vibrations?
- Frequency
- Time period
- Pitch
- Loudness
i and ii
ii and iii
iii and iv
i and iv
The amplitude of the sound wave decides its
speed
pitch
loudness
frequency
What kind of musical instrument is a sitar?
String instrument
Percussion instrument
Wind instrument
None of these
Find the odd one out.
Harmonium
Flute
Nadaswaram
Violin
Noise is produced by
vibrations with high frequency.
regular vibrations.
regular and periodic vibrations.
irregular and non-periodic vibrations.
The range of audible frequency for the human ear is
2 Hz to 2000 Hz
20 Hz to 2000 Hz
20 Hz to 20000 Hz
200 Hz to 20000 Hz
If the amplitude and frequency of a sound wave are increased, which of the following is true?
Loudness increases and pitch is higher
Loudness increases and pitch is unchanged.
Loudness increases and pitch is lower
Loudness decreases and pitch is lower.
Which of the following may be caused by noise?
Irratition
Stress
Nervousness
All the above
Fill in the blanks.
Sound is produced by ______.
The vibrations of a simple pendulum are also known as _______.
Sound travels in the form of ______.
High-frequency sounds that cannot be heard by you are called _______.
Fill in the blank.
The pitch of a sound depends on its ________.
If the thickness of a vibrating string is increased, its pitch _____.
Match the following.
| Ultrasonics | Frequency below 20Hz |
| Speed of sound in air | Needs material medium |
| Infrasonics | 330ms-1 |
| Sound propagation | Frequency more than 20000 Hz |
Consider the statement given below and choose the correct option.
Assertion: When lightning strikes, the sound is heard a little after the flash is seen.
Reason: The velocity of light is greater than that of the sound.
Both assertion and reason are true and the reason is the correct explanation of assertion.
Both assertion and reason are true but reason is not the correct explanation of assertion.
Assertion is true but reason is false.
Assertion is false but reason is true.
Both Assertion and reason are false.
Consider the statement given below and choose the correct option.
Assertion: Two persons on the surface of the moon cannot talk to each other.
Reason: There is no atmosphere on the moon.
Both assertion and reason are true and the reason is the correct explanation of assertion.
Both assertion and reason are true but reason is not the correct explanation of assertion.
Assertion is true but reason is false.
Assertion is false but reason is true.
Both Assertion and reason are false.
Answer briefly.
What is vibration?
Give an example to show that light travels faster than sound?
To increase loudness of sound by four times, how much should the amplitude of vibration be changed?
What is an ultrasonic sound?
What are the hazards of noise pollution?
Mention a few measures to be taken to reduce the effect of noise pollution.
Define the following term.
Amplitude
Define the following term.
Loudness
How does planting trees help in reducing noise pollution?
Answer in detail.
Describe an experiment to show that sound cannot travel through vaccum.
What are the properties of sound?
What steps should be taken to reduce the effect of noise pollution?
Describe the structure and function of the human ear?
Problems.
Ruthvik and Ruha hear a gunshot 2 second after it is fired. How far away from the gun they are standing? (Speed of sound in air is equal to 330ms-1)
A sound wave travels 2000 m in 8 s. What is the velocity of the sound?
A wave with a frequency of 500 Hz is traveling at a speed of 200 ms-1. What is the wavelength?
Solutions for 6: Sound
Samacheer Kalvi solutions for Science [English] Class 8 TN Board chapter 6 - Sound
Shaalaa.com has the Tamil Nadu Board of Secondary Education Mathematics Science [English] Class 8 TN Board Tamil Nadu Board of Secondary Education 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. Samacheer Kalvi solutions for Mathematics Science [English] Class 8 TN Board Tamil Nadu Board of Secondary Education 6 (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. Samacheer Kalvi 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 TN Board chapter 6 Sound are Sound, Production of Sound, Characteristics of a Sound Wave, Noise Pollution, Hearing Loss, Propagation of Sound, Properties of Sounds, Loudness and Intensity, Pitch (or shrillness) and frequency, Quality (Or Timbre) and Wave Form, Audibility and Range, Sound and Music, Sound Produced by Humans, Human Ear.
Using Samacheer Kalvi Science [English] Class 8 TN Board 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 Samacheer Kalvi Solutions are essential questions that can be asked in the final exam. Maximum Tamil Nadu Board of Secondary Education Science [English] Class 8 TN Board students prefer Samacheer Kalvi Textbook Solutions to score more in exams.
Get the free view of Chapter 6, Sound Science [English] Class 8 TN Board additional questions for Mathematics Science [English] Class 8 TN Board Tamil Nadu Board of Secondary Education, and you can use Shaalaa.com to keep it handy for your exam preparation.
