1.
Choose the correct answer.
Sound can travel through
(a) gases only
(b) solids only
(c) liquids only (d) solids, liquids and gases.
Voice of which of the following is likely to have minimum frequency?
(a) Baby girl
(b) Baby boy
c) A man
(d) A woman
Answers
Explanation:
options ç is answer and baby girl
Answer:
Explanation:
1.Sound is a form of energy produced and transmitted by vibrating matter. Sound travels in waves. When sound moves through matter (solid, liquid, or a gas), the molecules of the matter move backward and forward in the direction in which the wave is traveling. This movement is called a vibration. Sound travels more quickly through solids than through liquids and gases because the molecules of a solid are closer together. Sound travels the lowest through gases because the molecules of a gas are farthest apart. In a vacuum sound cannot travel because there is no matter for it to move through.
Hence, sounds can travel in solids, liquids and gases.
2.THE ANSWER IS A MAN. THE VOICE OF AN ADULT MAN IS OF LOWER PITCH IN COMPARISON TO THE VOICES OF THE BABY BOY, THE BABY GIRL AND THE WOMAN. SINCE FREQUENCY OF A SOUND IS DIRECTLY PROPORTIONAL TO ITS PITCH, A MAN'S VOICE IS OF MINIMUM FREQUENCY IN COMPARISON TO THE BABY BOY, THE BABY GIRL AND THE WOMAN.