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Class 9 Science Chapter 12 Sound Quiz 4 (25 MCQs)

Quiz Instructions

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1. Find a word that follows the /e/ sound in the medial position in the final syllable of a multi-syllable word.

Correct Answer: C) Complete.

2. Which question can determine whether a wave is a mechanical wave or an electromagnetic wave?

Correct Answer: C) Can the wave travel in a vacuum?.

3. Find a word that follows the long /e/ sound in the final position.

Correct Answer: D) Memory.

4. What letters make the long "a" sound in weigh?

Correct Answer: C) Eigh.

5. How does the pitch of a sound change with an increase in frequency?

Correct Answer: A) The pitch of a sound increases with an increase in frequency.

6. Which of these is NOT a song from The Sound of Music?

Correct Answer: E) Memory.

7. What is an echo and how is it formed?

Correct Answer: B) An echo is a reflection of sound that arrives at the listener after bouncing off a surface. It is formed when sound waves hit a hard surface and bounce back towards the listener.

8. Which one is sound that is heard by the actors in the world of the play?

Correct Answer: A) Diegetic.

9. The loudness of a sound depends on its:

Correct Answer: C) Amplitude.

10. What letters make the long "a" sound in pain?

Correct Answer: A) Ai.

11. Define echo and explain how it is produced.

Correct Answer: A) An echo is the reflection of sound off a surface. It is produced when sound waves bounce off a surface and return to the listener's ears.

12. Which of these represents wavelength?

Correct Answer: D) $\lambda$.

13. 9 Wave motion through a medium transfers

Correct Answer: A) Energy.

14. Infrasound can be heard by

Correct Answer: B) Rhinoceros.

15. Is sound wave

Correct Answer: A) Longitudinal.

16. Loudness of sound depends upon its:

Correct Answer: D) Amplitude.

17. How can sound be used for medical purposes?

Correct Answer: D) Ultrasound imaging, ultrasound therapy.

18. Which word has the same vowel sound as "name" ?

Correct Answer: A) Pay.

19. Which word has the same vowel sound as mistake?

Correct Answer: A) Gave.

20. Top

Correct Answer: A) Short o.

21. An example of a pleasent spund as

Correct Answer: C) Chirping birds.

22. Which word has the same vowel sound as job?

Correct Answer: B) Awful.

23. Which animal can hear infrasonic sound?

Correct Answer: C) Rhinoceros.

24. How does the sound produced by a vibrating body reach our ears?

Correct Answer: D) Through the propagation of sound waves.

25. Which one of the following is an example of unpleasant sound?

Correct Answer: C) Barking of dogs.

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