Class 7 Science Online Tests
All Around Sounds MCQ (Multiple Choice Questions) PDF Download
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The MCQ: For communication astronauts use radio because; "All Around Sounds" App Download (Free) with answers: Sound travels at very high speed in vacuum; Sound does not travel in vacuum; Vacuum repels sounds; Sound energy turns into light in vacuum; to learn online classes courses. Solve Sound Waves Quiz Questions, download Apple eBook (Free Sample) for elementary school graduation certificate.
All Around Sounds MCQs: Questions and Answers PDF Download
Sounds of vehicles, aircrafts and machines are called
- artificial sounds
- natural sounds
- noise
- normal sounds
For communication astronauts use radio because
- sound travels at very high speed in vacuum
- sound does not travel in vacuum
- vacuum repels sounds
- sound energy turns into light in vacuum
Like light, sound cannot
- pass through transparent solids
- pass through air
- pass through liquids
- pass through vacuum
Vibrations are caused due to
- change of temperature of air
- change of pressure in air
- effect of humidity on air
- level of heat in air
Sound is a form of
- force
- power
- light
- energy
Class 7 Science Practice Tests
All Around Sounds Learning App: Free Download (Android & iOS)
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