Class 7 Science Online Tests
Sound and Vacuum MCQ (Multiple Choice Questions) PDF Download
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The MCQ: Sound can travel through air because; "Sound and Vacuum" App Download (Free) with answers: Air has pressure; Air has humidity; Air has particles; Air has temperature; to learn online classes courses. Solve Sound Waves Quiz Questions, download Apple eBook (Free Sample) for elementary school graduation certificate.
Sound and Vacuum MCQ (PDF) Questions Answers Download
We cannot hear alarm of a clock if there is
- vacuum in the jar
- air in the jar
- liquid in the jar
- solid in the jar
Sound can travel through air because
- air has pressure
- air has humidity
- air has particles
- air has temperature
An example to demonstrate the effect of sound in vacuum is
- vacuum bell jar
- simple bell jar
- air pump and ring
- air pump and clock
Sound cannot travel in vacuum because
- there is no pressure in vacuum
- there is no air in vacuum
- there is no humidity in vacuum
- there are no particle in vacuum
We can hear the voice of alarm clock when there is
- vacuum in the jar
- air in the jar
- liquid in the jar
- space in the jar
Class 7 Science Practice Tests
Sound and Vacuum Learning App: Free Download Android & iOS
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