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Free CBSE - Class 9 Science - Sound worksheets

Sample Worksheets

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1.
What is sound and how is it produced?
2.
Describe with the help of a diagram, how compressions and rarefactions are produced in air near a source of sound.
3.
Why is sound wave called a longitudinal wave?
4.
Which characteristic of the sound helps you to identify your friend by his voice while sitting with others in a dark room?
5.
Flash and thunder are produced simultaneously. But thunder is heard a few seconds after the flash is seen, why?
6.
A person has a hearing range from $20$ Hz to $20$ kHz. What are the typical wavelengths of sound waves in air corresponding to these two frequencies? Take the speed of sound in air as $344$ m s$^{-1}$.
7.
Two children are at opposite ends of an aluminium rod. One strikes the end of the rod with a stone. Find the ratio of times taken by the sound wave in air and in aluminium to reach the second child.
8.
The frequency of a source of sound is $100$ Hz. How many times does it vibrate in a minute?
9.
Does sound follow the same laws of reflection as light does? Explain.
10.
When a sound is reflected from a distant object, an echo is produced. Let the distance between the reflecting surface and the source of sound production remains the same. Do you hear echo sound on a hotter day?
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Top Tutors who teach CBSE - Class 9 Science Sound

Dr gulsaz Shamim Sound in Ranchi
(45)
superTutorSuper Tutor
locationImg Lalpur, Ranchi
9 yrs of Exp students 15 students
2285 hrs of classes completed
rsIcon 500 per hour
Certified Science teacher with more than 10 years of experience in teaching and research
Online Classes Online Classes
Abdullah Sufiyan

Dr. Gulsaz is an excellent teacher. She explains the concepts in a way that is easy for the child to understand, she gives them also some extra fun facts. Furthermore she also uses diagrams to explain challenging concepts. Abdullah enjoys her classes and has shown great improvement in his understanding of the concepts and applications as well. I would recommend her definitely

Skills: Biology , Science

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superTutorSuper Tutor
locationImg Sector 92, Gurgaon
20 yrs of Exp students 20 students
1298 hrs of classes completed
rsIcon 800 per hour
Teaching mathematics since last 20 years. Doing research on Vedic mathematics
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homeTutions Student's Home
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Ramu Nutakki

Very patient. Makes learning fun and productive. A seasoned and competent teacher. Makes a subject as mind-bogging as Math very easy to understand. Awesome experience!

Skills: Mathematics , Physics and more

Sai V. Sound in Madappanahalli
(141)
superTutorSuper Tutor
locationImg Itagalpura Main Rd, Madappanahalli
17 yrs of Exp students 44 students
3536 hrs of classes completed
rsIcon 400 per hour
MSc, BEd , (Phd), Member of Royal Society UK
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Vijayalakshmi

He is not fit to be a teacher. Used our money but not taken the class as promised. Despite spoken multiple times of our expectations, half of the class he focuses on offline class and didn't focus on online class.

Skills: Mathematics , Physics and more

(61)
superTutorSuper Tutor
locationImg Sector 5, Dwarka, Delhi
10 yrs of Exp students 33 students
1173 hrs of classes completed
rsIcon 500 per hour
10 Yrs in Teaching, Conduct Batch Of Two Kids, One-to-One classes. ShortTermPrep & LongTermClasses.
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Skills: Mathematics , Physics and more

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