MCQ questions for class 8 Science Chapter 13 Sound
Question 1: What is the term for a form of energy that produces the sensation of hearing?
Light
Heat
Sound
Electricity
Question 2: Which of the following is a vibratory motion transmitted from one point to another?
Heat
Light
Sound
Electricity
Question 3: What is the term for the number of vibrations per second?
Frequency
Amplitude
Pitch
Wave
Question 4: Which part of the ear amplifies sound vibrations?
Outer ear
Middle ear
Inner ear
Ear canal
Question 5: What is the term for the highness or lowness of a sound?
Frequency
Amplitude
Pitch
Wave
Question 6: Which type of waves are responsible for the sensation of hearing?
Transverse waves
Longitudinal waves
Electromagnetic waves
Mechanical waves
Question 7: Which of the following materials is a good conductor of sound?
Wood
Air
Vacuum
Metal
Question 8: What is the term for the sound produced by the vibration of large and heavy bodies?
Musical sound
Noise
Harmonic sound
Infrasound
Question 9: What is the term for the number of oscillations per second?
Frequency
Amplitude
Pitch
Wave
Question 10: Which part of the ear converts sound vibrations into electrical signals?
Outer ear
Middle ear
Inner ear
Ear canal
Question 11: What is the term for the distance between two consecutive compressions or rarefactions?
Frequency
Wavelength
Pitch
Wave
Question 12: Which of the following can transmit sound waves?
Vacuum
Air
Water
Outer space
Question 13: What is the term for the unit of frequency?
Hertz
Watt
Decibel
Ampere
Question 14: Which part of the ear contains the auditory nerve?
Outer ear
Middle ear
Inner ear
Ear canal
Question 15: What is the term for a sound with a frequency higher than the upper limit of human hearing?
Musical sound
Noise
Ultrasonic sound
Infrasound
Question 16: Which of the following is a unit of amplitude?
Hertz
Watt
Decibel
Ampere
Question 17: What is the term for the sound with a frequency lower than the lower limit of human hearing?
Musical sound
Noise
Ultrasonic sound
Infrasound
Question 18: Which of the following is not a medium for sound propagation?
Air
Water
Steel
Vacuum
Question 19: What is the term for the reflection of sound?
Refraction
Diffraction
Echo
Absorption
Question 20: Which of the following is a device used to amplify weak sounds?
Microphone
Loudspeaker
Earphone
Stethoscope
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