This quiz works best with JavaScript enabled. Home > Cbse > Class 9 > Science > Sound > Class 9 Science Chapter 12 Sound – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 9 Science Chapter 12 Sound Quiz 2 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What type of waves are sound waves? A) Light waves. B) Heat waves. C) Electromagnetic waves. D) Mechanical waves. Show Answer Correct Answer: D) Mechanical waves. 2. Sound waves with frequencies below the audible range are called A) Ultrasound. B) Super Sonic sound. C) Infrasouud. D) Sub super sonic sound. Show Answer Correct Answer: C) Infrasouud. 3. Find a word that follows the /a/ pattern of two of more syllables. A) Sway. B) Plate. C) Gravy. D) Shape. Show Answer Correct Answer: C) Gravy. 4. What word has the same beginning sound as the word:Trout A) Out. B) Tree. C) Tent. D) Tee. Show Answer Correct Answer: B) Tree. 5. Bats produce which type of sound waves? A) Ultrasonic waves. B) Infrasonic waves. C) Audible waves. D) Mechanical waves. Show Answer Correct Answer: A) Ultrasonic waves. 6. Echo of sound is due to ..... of sound A) Speed. B) Propagation. C) Refraction. D) Reflection. Show Answer Correct Answer: D) Reflection. 7. Which word has the same vowel/ middle sound as card? A) Late. B) Star. C) Care. D) Hat. Show Answer Correct Answer: B) Star. 8. Find a word that follows the /e/ sound in the medial position in the final syllable of a multi-syllable word. A) Greed. B) Regret. C) Behind. D) Complete. Show Answer Correct Answer: D) Complete. 9. Which question can determine whether a wave is a mechanical wave or an electromagnetic wave? A) Is the wave a transverse wave?. B) Can the wave transmit energy?. C) Does the wave have a frequency?. D) Can the wave travel in a vacuum?. Show Answer Correct Answer: D) Can the wave travel in a vacuum?. 10. Find a word that follows the long /e/ sound in the final position. A) Depart. B) Memory. C) Greed. D) Cashmere. Show Answer Correct Answer: B) Memory. 11. What letters make the long "a" sound in weigh? A) Ea. B) A-e. C) Ay. D) Eigh. Show Answer Correct Answer: D) Eigh. 12. How does the pitch of a sound change with an increase in frequency? A) The pitch of a sound decreases with an increase in frequency. B) The pitch of a sound remains constant with an increase in frequency. C) The pitch of a sound is not affected by frequency changes. D) The pitch of a sound increases with an increase in frequency. Show Answer Correct Answer: D) The pitch of a sound increases with an increase in frequency. 13. Which of these is NOT a song from The Sound of Music? A) Climb Ev'ry Mountain. B) Do-Re-Mi. C) My Favorite Things. D) Memory. E) Edelweiss. Show Answer Correct Answer: D) Memory. 14. What is an echo and how is it formed? A) An echo is the result of sound waves passing through water. 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. C) An echo is formed when a person speaks too loudly. D) An echo is created by birds chirping in unison. Show Answer 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. 15. Which one is sound that is heard by the actors in the world of the play? A) Diegetic. B) Non-Diegetic. C) All the above. D) None of the above. Show Answer Correct Answer: A) Diegetic. 16. What letters make the long "a" sound in pain? A) A-e. B) A. C) Ay. D) Ai. Show Answer Correct Answer: D) Ai. 17. Define echo and explain how it is produced. 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. B) An echo is caused by the refraction of sound waves. C) An echo is produced by the interference of two sound waves. D) An echo is the result of a sound wave being absorbed by a surface. Show Answer 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. 18. Which of these represents wavelength? A) $\beta$. B) $\lambda$. C) $\alpha$. D) $\delta$. Show Answer Correct Answer: B) $\lambda$. 19. 9 Wave motion through a medium transfers A) Energy. B) Particles. C) Energy and particles. D) Neither energy or particles. Show Answer Correct Answer: A) Energy. 20. Infrasound can be heard by A) Dog. B) Rhinoceros. C) Bat. D) Human beings. Show Answer Correct Answer: B) Rhinoceros. 21. Loudness of sound depends upon its: A) Amplitude. B) Wavelength. C) Velocity. D) Frequency. Show Answer Correct Answer: A) Amplitude. 22. How can sound be used for medical purposes? A) X-ray imaging, X-ray therapy. B) MRI imaging, MRI therapy. C) Ultrasound imaging, ultrasound therapy. D) CT scan imaging, CT scan therapy. Show Answer Correct Answer: C) Ultrasound imaging, ultrasound therapy. 23. Which word has the same vowel sound as "name" ? A) Pay. B) Grow. C) True. D) Cat. Show Answer Correct Answer: A) Pay. 24. Which word has the same vowel sound as mistake? A) Miss. B) Map. C) Gave. D) Problem. Show Answer Correct Answer: C) Gave. 25. An example of a pleasent spund as A) Honking vehicle. B) Barking dogs. C) Chirping birds. D) None of the above. Show Answer Correct Answer: C) Chirping birds. 26. Which word has the same vowel sound as job? A) Knob. B) Open. C) Robe. D) Awful. Show Answer Correct Answer: D) Awful. 27. Which animal can hear infrasonic sound? A) Bat. B) Rhinoceros. C) Dog. D) Human. Show Answer Correct Answer: B) Rhinoceros. 28. How does the sound produced by a vibrating body reach our ears? A) Through the propagation of sound waves. B) Through the reflection of light waves. C) Through the transmission of electrical signals. D) Through the movement of air particles. Show Answer Correct Answer: A) Through the propagation of sound waves. 29. Which one of the following is an example of unpleasant sound? A) Chirping of birds. B) Guitar. C) Barking of dogs. D) None of the above. Show Answer Correct Answer: C) Barking of dogs. 30. Minimum distance required to hear a clear echo is: A) 17.2 m. B) 15 m. C) 10 m. D) 12 m. Show Answer Correct Answer: A) 17.2 m. 31. Find a word that follows the long /u/ sound in the final position A) Universe. B) Barbecue. C) Cuba. D) Prune. Show Answer Correct Answer: B) Barbecue. 32. What is the range of frequencies that humans can hear? A) 20 Hz to 20, 000 Hz. B) 30 Hz to 25, 000 Hz. C) 5 Hz to 30, 000 Hz. D) 10 Hz to 15, 000 Hz. Show Answer Correct Answer: A) 20 Hz to 20, 000 Hz. 33. The sensation of sound persist in our brain for about A) 0.001sec. B) 0.01sec. C) 1.0sec. D) 0.1sec. Show Answer Correct Answer: D) 0.1sec. 34. Choose the word that starts with the initial sound /t/. A) Fish. B) Tree. C) Elephant. D) Apple. Show Answer Correct Answer: B) Tree. 35. The magnitude of the maximum disturbance in the medium on either side of the mean value A) Time period. B) Frequency. C) Wave length. D) Amplitude. Show Answer Correct Answer: D) Amplitude. 36. A disturbance that transfers energy from one place to another without transferring energy A) Pitch. B) Wave. C) Sound. D) Trough. Show Answer Correct Answer: B) Wave. 37. What is the unit of sound intensity? A) Hertz. B) Decibel. C) Pascal. D) Newton. Show Answer Correct Answer: B) Decibel. 38. Diegetic sound doesn't have to be featured on-screen. In fact, many diegetic sounds are not shown on-screen. Say there's an emergency and an ambulance is called. The corresponding siren sound would be diegetic, even if it's not shown on screen. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 39. What letters make the long "a" sound in brain? A) A. B) A-e. C) Ai. D) Ay. Show Answer Correct Answer: C) Ai. 40. What word has the same middle sound as the word take A) Tap. B) Lack. C) Rake. D) Pat. Show Answer Correct Answer: C) Rake. 41. ..... is a device that uses ultrasonic waves to measure the distance, direction and speed of underwater bodies. A) Sonoghraphy. B) Fluxmeter. C) Decibel meter. D) SONAR. Show Answer Correct Answer: D) SONAR. 42. Sound waves are longitudinal wave A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 43. When ultrasound is used to examine heart. It is called A) Echography. B) Echocardiography. C) Echocardiogram. D) Ultrasonography. Show Answer Correct Answer: B) Echocardiography. 44. What are sound waves? A) Sound waves are static vibrations that do not move. B) Sound waves are electromagnetic waves that travel through a vacuum. C) Sound waves are solid particles that travel through space. D) Sound waves are vibrations that travel through a medium. Show Answer Correct Answer: D) Sound waves are vibrations that travel through a medium. 45. Find a word that follows the long /o/ sound in the initial or medial position of a one syllable word. A) Pillow. B) Noble. C) Elbow. D) Globe. Show Answer Correct Answer: D) Globe. 46. What unit is frequency measured in? A) Volt. B) Watt. C) Newton. D) Hertz (Hz). Show Answer Correct Answer: D) Hertz (Hz). 47. Sound waves travel slowest through a ..... A) Solid. B) Liquid. C) Gas. D) None of the above. Show Answer Correct Answer: C) Gas. 48. Noise pollution is caused by A) Industries. B) Vehicular traffic. C) Household things. D) All of these. Show Answer Correct Answer: D) All of these. 49. If you increased the tension on a guitar string the pitch would A) The string would be silent. B) Increase. C) Stay the same. D) Decrease. Show Answer Correct Answer: B) Increase. 50. What letters make the long "a" sound in share? A) A. B) Ea. C) Ai. D) A-e. Show Answer Correct Answer: D) A-e. 51. If the characters can't hear a sound, it is ..... A) Diegetic. B) Non-Diegetic. C) All the above. D) None of the above. Show Answer Correct Answer: B) Non-Diegetic. 52. Explain the term 'amplitude' in relation to sound waves. A) Maximum displacement of a wave from its rest position. B) The wavelength of a sound wave. C) The speed of a sound wave. D) The frequency of a sound wave. Show Answer Correct Answer: A) Maximum displacement of a wave from its rest position. 53. The persistence of sound in an auditorium due to repeated reflections is called: A) Audible sound. B) Echo. C) Reverberation. D) Reflection. Show Answer Correct Answer: C) Reverberation. 54. Which of the following words begins with the initial sound /m/? A) Dog. B) Mouse. C) Cat. D) House. Show Answer Correct Answer: B) Mouse. 55. How does the speed of sound change with a change in temperature? A) The speed of sound remains constant regardless of temperature. B) The speed of sound increases with an increase in temperature. C) The speed of sound decreases with a decrease in temperature. D) The speed of sound decreases with an increase in temperature. Show Answer Correct Answer: B) The speed of sound increases with an increase in temperature. 56. Find a word that follows the long /o/ sound in a two or more syllable word. A) Program. B) Fellow. C) Willow. D) Bone. Show Answer Correct Answer: A) Program. 57. It is a sound which is not Pleasing . A) Music. B) Noise Pollution. C) Noise. D) None of the above. Show Answer Correct Answer: C) Noise. 58. I heard the pigeon ..... A) Coo. B) Hoot. C) Tweet. D) None of the above. Show Answer Correct Answer: A) Coo. 59. What letters make the long "a" sound in slate? A) Ai. B) A. C) Eigh. D) A-e. Show Answer Correct Answer: D) A-e. 60. True or False:Sound waves are produced when something vibrates. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. ← PreviousNext →Related QuizzesScience QuizzesClass 9 QuizzesClass 9 Science Chapter 12 Sound Quiz 1Class 9 Science Chapter 12 Sound Quiz 3Class 9 Science Chapter 12 Sound Quiz 4 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books