Study Materials

NCERT Solutions for Class 8th Science

 

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Chapter 13. Sound

Additional Questions With Solutions

 

 

 

Additiona Questions With Answers


Ques: Write the name of two properties of sound on basis of which sounds can differentiate?

Ans: we differentiate sounds on the basis of their amplitudes and frequencies.

Ques: What is the difference between noise and music? Can music become noise sometimes?

Ans: Unpleasant sounds are called noise. Ex - the sounds produced by horns of buses and trucks.

While, Musical sound is one which is pleasing to the ear. Sound produced by a harmonium is a musical sound. The string of a sitar also gives out a musical sound. Musical sound may be noise if it is too loud.

Ques: What is noise pollution?

Ans: Presence of excessive or unwanted sounds in the environment is called noise pollution.

Ex - sounds of vehicles, explosions including bursting of crackers, machines, loudspeakers etc.

Ques: List sources of noise pollution in your surroundings.

Ans: sounds of vehicles, explosions including bursting of crackers, machines, loudspeakers etc.

 

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