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18 questions
What is sound?
Sound is produced by .......
Vibration of particles/ objects.
By seeing objects
By hearing the objects
None of the above
The most common medium through which sound travels easily to our ears.....
Water
Steel
Air
None of these
What is the compression region?
When a vibrating object moves forward it pushes and compresses air in front of it , creating a region of high pressure is compression region .
Compression is the region of high pressure
Both A&B
None of the above
Now , what is rarefaction?
Sound needs a medium to propogate..?
Yes
No
Don't know
None of these
Sound is which type of wave?
What are the different mediums of sound?
Air
Water
Steel
All of the above
Does sound travel through vaccum?
No
Yes
Don't know
Longitudinal waves are
.......
In which the particles of medium moves in a direction parallel to the direction of propagation of disturbance.
Particles do not move from one form to another
The particles oscillate back and forth about their rest position
All the above
Example of longitudinal waves are
Simple pendulum
vibrating Spring
Rest position of pendulum
Both A& B
What are the transverse waves.....?
Particles oscillate up and down about their mean position / original position
Individual particles of a medium move perpendicular to the direction of wave propogation
All of the above
Characteristics of sound are
Frequency
Speed
Amplitude
All of the above
In the compression region
Particles are crowded or in large amount
Represented by upper portion of the curve
Density is high
Pressure is high
Tell me what is rarefaction region ........?
What is crest
Upper part peak
Lower part peak
None of these
Now tell me , what is trough of the wave?
What is crest
Upper part peak
Lower part peak
None of these
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