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Class 9 Science Chapter 12 Sound Quiz 5 (25 MCQs)

Quiz Instructions

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1. Minimum distance required to hear a clear echo is:
2. Find a word that follows the long /u/ sound in the final position
3. What is the range of frequencies that humans can hear?
4. The sensation of sound persist in our brain for about
5. Choose the word that starts with the initial sound /t/.
6. The magnitude of the maximum disturbance in the medium on either side of the mean value
7. A disturbance that transfers energy from one place to another without transferring energy
8. What is the unit of sound intensity?
9. 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.
10. What letters make the long "a" sound in brain?
11. What word has the same middle sound as the word take
12. Music is
13. ..... is a device that uses ultrasonic waves to measure the distance, direction and speed of underwater bodies.
14. Sound waves are longitudinal wave
15. When ultrasound is used to examine heart. It is called
16. What are sound waves?
17. Find a word that follows the long /o/ sound in the initial or medial position of a one syllable word.
18. What unit is frequency measured in?
19. Sound waves travel slowest through a .....
20. Pitch is .....
21. Noise pollution is caused by
22. If you increased the tension on a guitar string the pitch would
23. What letters make the long "a" sound in share?
24. If the characters can't hear a sound, it is .....
25. Explain the term 'amplitude' in relation to sound waves.
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