EASY
8th CBSE
IMPORTANT
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Loud noises that continue for a prolonged period can cause _____.

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Important Questions on Sound

EASY
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 13 - Sound>ASSESSMENT ZONE>Q B

Fill in the blank with the correct option provided in the bracket.

Eardrum is also known as _____(tympanum/cochlea/malleus).

EASY
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 13 - Sound>ASSESSMENT ZONE>Q B
Tabla is an example of _____ (percussion/ noisy) instrument.
EASY
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 13 - Sound>ASSESSMENT ZONE>Q B
The longer the length of vibrating rubber band, the _____ is the pitch of the sound produced.

Choose from the bracket (longer/lower).

EASY
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 13 - Sound>ASSESSMENT ZONE>Q B
If a violin string is pulled strongly, its amplitude of vibration _____(increases/ decreases).
EASY
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 13 - Sound>ASSESSMENT ZONE>Q C
Eardrum vibrates when sound waves enter the ear.
EASY
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 13 - Sound>ASSESSMENT ZONE>Q C
The sharper the sound is, the smaller is the frequency of the vibrating body.
EASY
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 13 - Sound>ASSESSMENT ZONE>Q C
The quality of sound produced by all the stringed instruments will be the same.
EASY
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 13 - Sound>ASSESSMENT ZONE>Q C
Sound levels lower than eighty decibels is not harmful to the ears.