What is sound ? name any four sources of sound.
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Answer:
Acoustic instruments, Electrical instruments, Living beings like animals and birds using their vocal cords, Man-made sources like machines, any vibration caused by wind are five sources of sound.
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Explanation:
Sound :- Sound is a form of energy which requires material medium to propagate.
Some important points related to sound are:-
1) It is a mechanical wave, i.e.. it requires material medium to travel.
2) It cannot travel in vacuum as there is not material medium to propagate.
3) It is a longitudinal wave [This you will learn in class 9].
Four sources of Sound are:- 1) Speakers 2) Music Instruments 3) Our Vocal Chords 4) Birds Singing, etc...
Hope it Helps!!
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