Physics
Grade-8
Easy
Question
Sound is a ____.
- Wave
- Particle
- Volume
- Material
Hint:
Sound is a mechanical wave.
The correct answer is: Wave
- Sound is a mechanical wave.
- It requires a medium to propagate.
- The speed of the sound wave is more in a solid medium than a fluid medium.
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Sound cannot travel through ____.
Sound cannot travel through ____.
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A wave is a ____ that penetrates through a medium.
A wave is a ____ that penetrates through a medium.
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Seismic waves cause the earth’s surface to shake. These are ____.
Seismic waves cause the earth’s surface to shake. These are ____.
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Vacuum is a medium which has ____ particles.
Vacuum is a medium which has ____ particles.
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The picture below shows a ____.
The picture below shows a ____.
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The substance through which sound transmits is called a ____.
The substance through which sound transmits is called a ____.
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A mechanical wave is the one which requires a ____ for its propagation.
A mechanical wave is the one which requires a ____ for its propagation.
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The electrical appliances make noise when they are used. This is because of the _____ of their internal parts.
The electrical appliances make noise when they are used. This is because of the _____ of their internal parts.
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Which of the following sounds we humans do not make?
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A trumpet needs to be blown to make sound. What vibrates to make this sound?
A trumpet needs to be blown to make sound. What vibrates to make this sound?
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The buzzing sound of the mosquitoes is a sound is due to the vibration of ____
The buzzing sound of the mosquitoes is a sound is due to the vibration of ____
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Match the action in one column to the corresponding amount of friction produced in the other column:
Match the action in one column to the corresponding amount of friction produced in the other column:
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Match the following:
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