Class 7 Science Online Tests
Sound Absorption MCQ (Multiple Choice Questions) PDF Download
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Sound Absorption MCQ (PDF) Questions Answers Download
Large empty room often sounds
- full
- hollow
- noisy
- repeating
In concert halls, soft materials and carpets are used to
- increase sound waves
- absorb sound waves
- retract sound waves
- refract sound waves
In large empty rooms, even a click keeps on
- increasing
- decreasing
- repeating
- coming
Echoes are formed when sound
- strikes a wall and reflects back
- strikes a wall and is absorbed
- hits the eardrum repeatedly
- breaks
Large concert halls have modified roofs which
- absorb sounds
- reflect sounds
- increase loudness of sounds
- decrease pitch of sounds
Class 7 Science Practice Tests
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