1. What is the unit of frequency?
2. Which device is used to measure frequency?
3. What part of the human body helps in producing sound?
4. What kind of wave is sound?
5. Which of the following can sound not travel through?
6. What is the speed of sound in air approximately?
7. What is the range of audible frequencies for humans?
8. What is the time taken for one vibration called?
9. What is amplitude related to in a sound wave?
10. What kind of vibration produces sound in a drum?
11. What determines the pitch of a sound?
12. Which sound has higher pitch?
13. Which characteristic of sound depends on amplitude?
14. Which medium allows sound to travel fastest?
15. What is the frequency of a sound wave if its time period is 0.01 s?
16. What is the function of the cochlea in the ear?
17. What is the outermost part of the ear called?
18. Which of these animals can hear ultrasonic sounds?
19. What kind of vibration creates sound in a flute?
20. Which part of the ear vibrates first when sound enters?
21. What is the effect when sound reflects back to the listener?
22. What is the minimum distance required to hear an echo?
23. Which frequency range is ultrasonic?
24. What happens to sound if its amplitude increases?
25. Which of the following does not affect the speed of sound?
26. What does SONAR use to detect underwater objects?
27. What unit is used to measure sound level?
28. What is the frequency of a sound wave that completes 500 vibrations in 1 second?
29. Why can’t sound travel in outer space?
30. What causes the buzzing sound in a bee?
31. What type of sound is produced by a tuning fork?
32. Which wave property determines the shrillness of sound?
33. Which part of the ear sends signals to the brain?
34. What happens to sound as it travels farther from the source?
35. What kind of sound causes noise pollution?
36. Which wave property remains constant in different mediums?
37. What does a sound wave transfer?
38. How does increasing tension on a string affect pitch?
39. What instrument produces sound by vibrating strings?
40. What causes the difference between two sounds of the same loudness and pitch?