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Sound Book Back Questions & Answers, Exercises, Solutions, Tests, Quizzes, Videos and Podcasts for Class 9 | Unit 8 | | Science | Samacheer Kalvi – English Medium

Samacheer Kalvi New Book Back Questions & Answers: https://www.thelearning.app/samacheer-kalvi-english-medium/class-9/science-4/sound/exercises

Podcasts: https://www.thelearning.app/samacheer-kalvi-english-medium/class-9/science-4/sound/videos

Tests & Quizzes: https://www.thelearning.app/samacheer-kalvi-english-medium/class-9/science-4/sound/tests

Flash Cards: https://www.thelearning.app/samacheer-kalvi-english-medium/class-9/science-4/sound/flashcards

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00:00 Introduction
00:10 Choose the correct answer
02:07 Fill in the blanks
03:06 Match the following

Questions answered in this video –

1. Which of the following vibrates when a musical note is produced by the cymbals in a orchestra?

2. Sound travels in air:

3. A musical instrument is producing continuous note. This note cannot be heard by a person having a normal hearing range. This note must then be passing through

4. The maximum speed of vibrations which produces audible sound will be in

5. The sound waves travel faster

6. Sound is a ____________ wave and needs a material medium to travel.

7. Number of vibrations produced in one second is ____________ .

8. The velocity of sound in solid is ____________ than the velocity of sound in air.

9. Vibration of object produces _________ .

10. Loudness is proportional to the square of the ____________ .

11. ____________ is a medical instrument used for listening to sounds produced in the body.

12. The repeated reflection that results in persistence of sound is called ____________ .

13. Tuning fork

14. Sound

15. Compressions

16. Amplitude

17. Ultasonics

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