Class 7 Science Online Tests
All Around Sounds MCQ (Multiple Choice Questions) PDF Download
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The MCQ: Sounds of vehicles, aircrafts and machines are called; "All Around Sounds" App Download [Free] with answers: artificial sounds, natural sounds, noise, and normal sounds to learn online classes courses. Solve Sound Waves Quiz Questions, download Apple eBook (Free Sample) for elementary school graduation certificate.
All Around Sounds 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
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