Question

20 0 (c) A man (d) A woman Fill in the blanks: INCERT) [NCERT) 1. Sound is produced by wbiceber 2. When the sound reaches our ear, the carduum vibrates and sends the signals to the brain. 3. The vibration of Vocal cende produces sound in human beings. 4. Time taken by an object to complete one oscillation is called me found 5. Loudness is determined by the amplitude of vibration. 6. The unit of frequency is herty [NCERT) 7. Unwanted sound is called noso 8. Shrillness of a sound is determined by the Dean of vibration. [NCERT) 9. Noise pollution can be reduced by planting more trees 10. A whistle produces sound of high frequency than a drum. [NCERT)​

Answer 1

Answer:

1 voice box 2 ear drum 3 vocal cords 4 time period 5 amplitude  6 Hertz 7 noise 8 frequency 9 trees

Explanation

• 1 voice box is also called larynx which has 2 cords when they vibrate it produces sound 2 ear drum is like a membrane produces sound when sound comes to it 3 larynx has vocal cord and produces sound 4 its self explanatory 5 self explanatory 6 hertz is frequency unit 7 noise is a sound which we dont  like whereas we like music 8other are self explanatory