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Chapters
2: Plants: Structure and Function
3: Properties of Natural Resources
4: Nutrition in Living Organisms
5: Food Safety
6: Measurement of Physical Quantities
7: Motion, Force and Work
8: Static Electricity
9: Heat
10: Disaster Management
11: Cell Structure and Micro-organisms
12: The Muscular System and Digestive System in Human Beings
13: Changes – Physical and Chemical
14: Elements, Compounds and Mixtures
15: Materials We Use
16: Natural Resources
17: Effects of Light
▶ 18: Sound: Production of Sound
19: Properties of a Magnetic Field
20: In the World of Stars
![Balbharati solutions for General Science [English] 7 Standard chapter 18 - Sound: Production of Sound - Shaalaa.com](/images/general-science-english-7-standard_6:24ceb46b35104a7f823bc17a7cebb5ec.JPG "Balbharati solutions for General Science [English] 7 Standard chapter 18 - Sound: Production of Sound")
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Solutions for Chapter 18: Sound: Production of Sound
Below listed, you can find solutions for Chapter 18 of Maharashtra State Board Balbharati for General Science [English] 7 Standard.
Balbharati solutions for General Science [English] 7 Standard 18 Sound: Production of Sound Exercise [Page 125]
Sound is generated by the rhythmic ______ of an object.
The frequency of sound is measured in ______.
If ______ of sound is decreased, its loudness also decreases.
A medium is necessary for ______ of sound.
Match the pairs.
| Group ‘A’ | Group ‘B’ |
| (a) Flute | (1) Frequency less than 20 Hz |
| (b) Frequency | (2) Frequency more than 20000 Hz |
| (c) Sound level | (3) Vibrations in the air |
| (d) Ultrasonic sound | (4) Measured in Hz |
| (e) Infrasonic sound | (5) Decibel |
Give a scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
Give a scientific reason.
The sounds generated by a tabla and a sitar are different.
Give a scientific reason.
If you were both on the moon, your friend will not be able to hear you call.
Give a scientific reason.
We can hear the movement of a mosquito's wings but we cannot hear the movement of our hands.
How is the sound produced?
What does the intensity of sound depend upon?
Explain how the frequency of oscillation is related to the length of a pendulum and the amplitude of its oscillation.
Explain the two ways by which the pitch of the sound generated by a stretched string can be changed.
Solutions for 18: Sound: Production of Sound
Balbharati solutions for General Science [English] 7 Standard chapter 18 - Sound: Production of Sound
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Concepts covered in General Science [English] 7 Standard chapter 18 Sound: Production of Sound are Sound, Oscillator, Oscillation and Oscillatory Motion, Properties of Sounds, Sound and Music, A Time Period of Oscillation and Frequency, Pitch (or shrillness) and frequency, Loudness and Intensity, Audibility and Range.
Using Balbharati General Science [English] 7 Standard solutions Sound: Production of 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 Balbharati Solutions are essential questions that can be asked in the final exam. Maximum Maharashtra State Board General Science [English] 7 Standard students prefer Balbharati Textbook Solutions to score more in exams.
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