13 Sound

 Sound 

1) The object due to which sound is produced is called the......of that sound.

2) The science of sound, resonance, including the production, propagation and effects of sound is called....

3) The intensity of sound is measured in a unit called......(db).

4) The quality of the sound produced in the larynx depends upon the..... of the vocal cords.

5) Sound is heard most clearly through a.......

6) ..... pollution is a social problem.

7) birds like the Robin and the woodcock can recognize the sound of an..... in the soil and find their prey.

8) the flopping of the wings of  the bee or the mosquito produces a......

9) blowing the horns of vehicles is prohibited near places like .... and .....

10) ...... are required for the production of sound. 

11). A medium is required for the..... of sound 


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