AP 8th Physical Science Mock Test 2023 For Chapter – 5 : ” Sound ” Online Practice Test

1. Identify the musical instrument with strings

2. Length of vocal cords in men

3. Which of the above can acts as medium for sound propagation ?

4. Unit for measuring the intensity of sound

5. Which can produce high pitch sound ?

6. Audible frequency range of human beings

7. Vamsi : Vibrations produce sound
Madhav : Sound produce vibrations

Whose statement is true ?

8. By the activity of Toy telephone , we came to know that .................

9. Material required for the activity to prove that sound has energy

10. Sound needs material medium to propagate . Sound can not travel through vacuum . If a bomb blast on the moon , then

11. While a body is vibrating , the maximum displacement of body from its mean position is called

12. In the below diagram amplitude is indicate by

13. In the below diagram the indicated part is

14. What we should follow to reduce sound pollution ?

15. Which of the below allow the sound to travel through them ?

1. Iron
2. Glass
3. Vacuum
4. Air

16. This is not a part in Voice box

17. Sound can not travel through

18. The unit for intensity of sound is

19. The sound produced by near total silence is

20. Audible range is

21. Pitch depends upon _________ of the sound

22. Intensity of sound depends on

23. ____________ contains 3 small bones

24. A 30 dB sound is ................ times more powerful than total silence

25. The unit decibel expressed in the name of _______

26. ______ produce more shrillness sound

27. Sound is a form of

28. Muscular ligaments at the end of wind pipe are called

29. ________ of external ear collects the sound vibration

30. The shrillness of sound is known as

31. The sounds which are pleasant to hear are called

32. The sounds which are unpleasant to hear are called

33. Unwanted sound is called

34. Smallest audible sound is

35. Three bones in middle ear

36. Match the following

1. A whisper                      ( ) a. 90 dB
2. Normal conversation  ( ) b. 15 dB
3. A lawnmower                ( ) c. 60 dB

37. Match the following

1. A car horn             ( ) a. 140 dB
2. A gunshot             ( ) b. 120 dB
3. A jet engine          ( ) c. 110 dB

38. Match the following

1. pitch                         ( ) a. Amplitude
2. Intensity of sound ( ) b. Pleasant to hear
3. Music                       ( ) c. Frequency

39. Match the following

1. Noise                                    ( ) a. Unpleasant to hear
2. Audible frequency range ( ) b. 20 - 20,000 cycles/sec
3. Firecracker                         ( ) c. 140 B

40. How do you feel while listening to songs from a radio ?

41. How do you feel while listening sounds in busy traffic ?

42. Which of the following is pleasant ?

43. How many times is a jet engine more powerful than the whispering sound ?

44. How many times is a car hon more powerful than normal conversation ?

45. Do we hear the sounds produced by bats ?

46. Does the sound travel if there is no medium ?

47. The sounds that a normal human being can hear is called

48. 20 cycles/sec to 20000 cycles/sound is

49. The number of vibration per second is called

50. Pitch is a

51. Noise is a

52. ______ is combination of sounds that are produced in an order and pleasant to hear

53. The speech organs which involved in producing sounds are

1. Vocal cards
2. Lips
3. Teeth
4. Tongue
5. Nose
6. Throat

54. The maximum displacement of vibrating body from its mean position is called

55. The to and fro motion of a body from its mean position is called

56. How many times is a jet engine more powerful than a smallest audible sound ?

57. Why are some sounds loud ?

58. Why are some sounds feeble ?

59. How many times is a car horn more powerful than a near total silence ?

60. Is there any relation between the intensity of sound and vibrations of body which produces sound ?

61. Whistle has more shrillness due to its ..................... than drum

62. The pitch of the voice depends on

63. Which of the following is true ?

64. Which of the following can't make sound using vocal cards ?

65. The sound is produced from .................... in honeybee

66. Sound is

67. The unwanted sound in society is

68. When do we hear loud sound ?

69. When do we hear feebler sound ?

70. We need following material in the activity of identifying pitch of sound

71. It is impossible that the sound travel through

72. We use ................. to make toy telephone

73. Sound travel through

74. Find false statement

75. It is impossible to produce sound without

76. How would you feel when touching the vibrated body ?

77. How does a flute produce sound ?

78. Laths : Vibrations produce sound
Lasya : Sound produces vibrations

Which of them is right ?

79. In humidity velocity of sound

80. Why we are unable to listen explosion on sun ?

81. The following does not produce sound by vocal cords

82. A normal human being can listen to sounds with frequency from .............. to ........... vibration per second

83. Vibrating body produced

84. Sound can't travel in

85. The Decibel is used for

86. Sound of high frequency produce

87. The shrillness of sound is named as

88. Sound of low amplitude is

89. Loudness and softness of sound depends upon

90. The thin membrane at end of auditory canal is

91. Vacuum means

92. Name the substance that allows the passage of sound

93. The two muscular ligaments at end of wind pipe called

94. What is the function of located part

95. Name it

96. Pinna is visible portion in

97. Noise means

98. Rama : Condition of no medium or with out medium is vacuum
Raam : The thin membrane at end of auditory canal is ear drum

Who is wrong ?

99. A : Decibel is unit for measuring intensity of sound
B : The shrillness of sound is known as vacuum

100. What are the sources of sound pollution ?