Physics
Grade-8
Easy
Question
Sound originates from _________.
- A vibrating object
- A moving object
- A shaking object
- A spinning object
Hint:
Vibrating object produces sound.
The correct answer is: A vibrating object
- Sound is produced when an object vibrates.
- The vibration propagates through the medium which contains densely packed compressed particles
Related Questions to study
Physics
Propagation of sound creates disturbance among the particles of ____.
- Air
- Water
- Wood
- All of the above
Propagation of sound creates disturbance among the particles of ____.
PhysicsGrade-8
- Air
- Water
- Wood
- All of the above
Physics
In which of the following mediums does the vibration of an object not produce a sound?
- Vacuum
- Air
- Water
- Steel
In which of the following mediums does the vibration of an object not produce a sound?
PhysicsGrade-8
- Vacuum
- Air
- Water
- Steel
Physics
A particle of the medium near to the vibrating object _____.
- Vibrates alone
- Vibrates and sets the next particle to vibration
- It comes to rest
- First b then c
A particle of the medium near to the vibrating object _____.
PhysicsGrade-8
- Vibrates alone
- Vibrates and sets the next particle to vibration
- It comes to rest
- First b then c
Physics
Rarefactions are the regions in which the ____ is ____.
- Pressure, high
- Density, high
- Pressure, low
- Both a and b
Rarefactions are the regions in which the ____ is ____.
PhysicsGrade-8
- Pressure, high
- Density, high
- Pressure, low
- Both a and b
Physics
The high-pressure regions formed when a sound wave propagates through a medium ____.
- Are called compressions
- Contain densely packed particles
- Are formed alternatively with low pressure regions
- All of the above
The high-pressure regions formed when a sound wave propagates through a medium ____.
PhysicsGrade-8
- Are called compressions
- Contain densely packed particles
- Are formed alternatively with low pressure regions
- All of the above
Physics
When a speaker vibrates, it sets its neighboring particles into ____.
- Motion
- Vibration
- Rest
- Circulation motion
When a speaker vibrates, it sets its neighboring particles into ____.
PhysicsGrade-8
- Motion
- Vibration
- Rest
- Circulation motion
Physics
We are able to hear sound originating from various objects as ____.
- The medium in which we are located is a material medium
- The sound is able to propagate through the medium
- The particles of the medium vibrate to transmit sound.
- All of the above
We are able to hear sound originating from various objects as ____.
PhysicsGrade-8
- The medium in which we are located is a material medium
- The sound is able to propagate through the medium
- The particles of the medium vibrate to transmit sound.
- All of the above
Physics
One end of a slinky lying on a table is fixed to a rigid support. The free end of the slinky is pushed back and forth. As a result, alternate compressions and rarefactions are observed. The former and the latter refer to the loops of the slinky to be ____ and ____ respectively.
- Farther apart, farther apart
- Closer together, closer together
- Closer together, farther apart
- Farther apart, closer together
One end of a slinky lying on a table is fixed to a rigid support. The free end of the slinky is pushed back and forth. As a result, alternate compressions and rarefactions are observed. The former and the latter refer to the loops of the slinky to be ____ and ____ respectively.
PhysicsGrade-8
- Farther apart, farther apart
- Closer together, closer together
- Closer together, farther apart
- Farther apart, closer together
Physics
Compressions are the regions in which the ____ is ____.
- Pressure, low
- Pressure, high
- Density, low
- None of the above
Compressions are the regions in which the ____ is ____.
PhysicsGrade-8
- Pressure, low
- Pressure, high
- Density, low
- None of the above
Physics
The particles of the medium ____ when a sound wave moves through it.
- Move from source to the destination of the sound
- Move in circular paths
- Move up and down and forward
- Vibrate for some time at their original place
The particles of the medium ____ when a sound wave moves through it.
PhysicsGrade-8
- Move from source to the destination of the sound
- Move in circular paths
- Move up and down and forward
- Vibrate for some time at their original place
Physics
In a particular medium the vibration of an object does not produce a sound. The medium is ____.
- Vacuum
- Air
- Water
- Steel
In a particular medium the vibration of an object does not produce a sound. The medium is ____.
PhysicsGrade-8
- Vacuum
- Air
- Water
- Steel
Physics
Sound is generated when an object ____ and is propagated when it is in a ____.
- Moves, air
- Moves, material medium
- Vibrates, material medium
- Vibrates, vacuum
Sound is generated when an object ____ and is propagated when it is in a ____.
PhysicsGrade-8
- Moves, air
- Moves, material medium
- Vibrates, material medium
- Vibrates, vacuum
Physics
Rarefactions are the regions where the ____ is low.
- Volume
- Force
- Influence
- Pressure
Rarefactions are the regions where the ____ is low.
PhysicsGrade-8
- Volume
- Force
- Influence
- Pressure
Physics
The particles of the medium do not actually move to carry the sound wave from one place to another. They simply vibrate about their equilibrium positions. This statement is ____.
- True
- False
- Sometimes true
- None of the above
The particles of the medium do not actually move to carry the sound wave from one place to another. They simply vibrate about their equilibrium positions. This statement is ____.
PhysicsGrade-8
- True
- False
- Sometimes true
- None of the above
Physics
Propagation of sound can be visualized as the propagation of ____ variations.
- Density
- Pressure
- Both a and b
- None of the above
Propagation of sound can be visualized as the propagation of ____ variations.
PhysicsGrade-8
- Density
- Pressure
- Both a and b
- None of the above
