This quiz works best with JavaScript enabled. Home > Class 9 > Class 9 Science Chapter 12 Sound – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 9 Science Chapter 12 Sound Quiz 6 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Soft A) Short o. B) Long o. C) O magic e. D) None of the above. Show Answer Correct Answer: A) Short o. 2. The persistence of sound in an auditorium due to repeated reflections is called: A) Echo. B) Audible sound. C) Reverberation. D) Reflection. Show Answer Correct Answer: C) Reverberation. 3. Which of the following words begins with the initial sound /m/? A) Mouse. B) House. C) Cat. D) Dog. Show Answer Correct Answer: A) Mouse. 4. How does the speed of sound change with a change in temperature? A) The speed of sound increases with an increase in temperature. B) The speed of sound decreases with a decrease in temperature. C) The speed of sound remains constant regardless of temperature. D) The speed of sound decreases with an increase in temperature. Show Answer Correct Answer: A) The speed of sound increases with an increase in temperature. 5. Find a word that follows the long /o/ sound in a two or more syllable word. A) Program. B) Fellow. C) Bone. D) Willow. Show Answer Correct Answer: A) Program. 6. 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. 7. I heard the pigeon ..... A) Coo. B) Hoot. C) Tweet. D) None of the above. Show Answer Correct Answer: A) Coo. 8. What letters make the long "a" sound in slate? A) A-e. B) A. C) Ai. D) Eigh. Show Answer Correct Answer: A) A-e. 9. 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. 10. What letters make the long "a" sound in play? A) Ay. B) Ai. C) A. D) Eigh. Show Answer Correct Answer: A) Ay. 11. Snow A) Short o. B) Long o. C) O magic e. D) None of the above. Show Answer Correct Answer: B) Long o. 12. Which word has the same vowel sound has wipe? A) Rake. B) Did. C) Nice. D) Fiddle. Show Answer Correct Answer: C) Nice. 13. Find a word that follows the long /a/ sound pattern of a-consonant-e. A) Clay. B) Acron. C) Brave. D) Gray. Show Answer Correct Answer: C) Brave. 14. Find a word that follows the long /e/ sound at the end of a syllable in a two or more syllable word. A) Eleven. B) Athlete. C) Teen. D) Screen. Show Answer Correct Answer: A) Eleven. 15. I heard the dolphin ..... A) Click. B) Growl. C) Ribbit. D) None of the above. Show Answer Correct Answer: A) Click. 16. Which word has the same vowel sound as spend A) Knot. B) Weather. C) Speed. D) Finally. Show Answer Correct Answer: B) Weather. 17. Which answer is false? A) Sound can be reflected. B) Sound is a mechanical wave. C) Sound can travel though a gases. D) Sound cannot be diffracted. Show Answer Correct Answer: D) Sound cannot be diffracted. 18. Which word has the same vowel sound as chalk? A) Bought. B) Change. C) Think. D) Weather. Show Answer Correct Answer: A) Bought. 19. Mow A) Short o. B) Long o. C) O magic e. D) None of the above. Show Answer Correct Answer: B) Long o. 20. Speed of sound in solid is ..... than in gases A) Less. B) More. C) Both a and b. D) Equal. Show Answer Correct Answer: B) More. 21. Any sound in a film that doesn't originate from the world of the film is ..... A) Diegetic. B) Non-Diegetic. C) All the above. D) None of the above. Show Answer Correct Answer: B) Non-Diegetic. 22. Which word has the same vowel sound as bought? A) Comb. B) Mall. C) Boat. D) Bite. Show Answer Correct Answer: B) Mall. 23. I heard the dog ..... A) Bark. B) Moo. C) Gobble. D) None of the above. Show Answer Correct Answer: A) Bark. 24. Which word starts with the initial sound /s/? A) Sun. B) Moon. C) Star. D) Tree. Show Answer Correct Answer: A) Sun. 25. The Sound of Music takes place before what war? A) World War I. B) Vietnam War. C) Cold War. D) World War II. 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