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WorksheetsSound Quiz For Grade 9th By Vibhanshu Paliya
Total questions: 10
Worksheet time: 5mins
We can distinguish between a man’s voice and a woman’s voice of the same loudness even without seeing them. This is due to a characteristic of sound which measures the shrillness of sounds. Can you choose the correct unit of the quantity on which this characteristic of sound depends?
(a)hertz
(b) meter/seconds
(c) meter
(d) unitless
If the speed of sound in water is 1500 m/s, then what is the depth of the sea?
3500 m
15000 m
3000 m
15000 m
Given below is the diagram of human ear. Choose the correct labeling of the parts A, B and C.
ear canal
ear lobe
Eustachian tube
cochlea
. Loudness measures the sound energy reaching the ear per second and depends on the amplitude of the sound wave. What is the unit used to measure the loudness of sound?
hertz
decibel
second
meter/second
Which of the following can produce longitudinal as well as transverse waves under different conditions?
Slinky
Bats
Tuning fork
None of these
The bats can fly in the darkness of night without colliding with the other objects by emitting special sounds while flying. Which characteristic of sound is used by the bats to navigate?
Audible sound
Infrasound
Ultrasound
None of these
Given below is the diagram of human ear. Choose the correct labeling of the parts A, B and C.
ear canal
ear lobe
Eustachian tube
cochlea
(a) produced due to vibration of different object
You must have seen the doctor checking the sounds produced in the chest or heartbeat of a patient using a medical instrument called Stethoscope. On what principle does this Stethoscope work?
Wave motion
Multiple reflections
Multiple refractions
None of these
The outer ear is called (a)
