Question

Explain the following terms.( chapter sound )

( l ) compression.

( ll ) rarefaction.

( lll ) wavelength.

( IV ) frequency.

( V ) oscillation.

( VI ) velocity of sound wave.

( VII ) Amplitude.

( VIII ) time period.

(IX ) timbre.

( X ) note.

( XI ) pitch.

( XII ) loudness.

( Xlll ) Intensity

Answer 1

HEY HERE IS YOUR ANSWER
*Sound is form of energy that is produced by vibrating objects it means Rapid to and through of an object.
*compression is the part of longitudinal wave in which particles of the medium are closer to one another *refraction is the part of longitudinal wave in which particles of the medium is further apart

*Amplitude is the maximum displacement of the particles of the medium from the original position .
Wavelength
*the distance between two consecutive craft and craft or compression and rarefaction is called wavelength .
*Time period is defined as where the time taken for one complete oscillation of the medium .

*frequency - reciprocals of time period is called frequency .

*The distance travelled by the sound wave per unit time is called speed of sound .
*Timbre of sound is the characteristics of sound which enables us to distinguish one sound from another having same pitch and loudness.

*Note - the sound produced due to mixture of several frequencies is called note.
*the amount of sound energy passing each second through unit area is called Intensity.
I THINK HELP YOU
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Answer 2

sound is produced by vibrating objects..

1) Compression:- region where air becomes dense.

2) Rarefaction:- region where air becomes Less Dense.

4) Frequency:- the number of vibrations produced per second.

7). Amplitude:- the maximum displacement of a vibrating body from its mean position.

8).Time period:- time taken for A vibrating body to complete one vibration.

9). timbre:- characteristics of sound that helps us to distinguish sound which have the same pitch and loudness.

11). pitch:- the number of vibrations per second perceived by a listener.

12). loudness:- intensity of sound.