NCERT solutions for class 8 science chapter 13 Sound: In day to day life, you hear a variety of sounds. Have you ever thought that how sounds are produced? What makes male and female voices so different from each other? You will get the know answers to these questions in solutions of NCERT class 8 science chapter 13 sound. After studying the chapter attempt NCERT exercise of science chapter 13. For better preparation CBSE NCERT solutions for class 8 science chapter 13 sound are helpful. You must have observed that when we take a steel bucket and hit it with a small hammer, vibrations are caused. These vibrations are responsible for the production of sound. Production of sound in humans is mainly due to the presence of a voice box or larynx. It is found to be present at the upper end of the windpipe. You will understand the structure of the voice box and mechanism of production of sound by voice box after studying this chapter. The solutions of NCERT helps students in solving homework problems. The NCERT solutions for class 8 science chapter 13 sound give an explanation to 13 exercise questions.
NCERT solutions for class 8 science chapter 13 Sound
4. Fill in the blanks with suitable words.
(a) Time taken by an object to complete one oscillation is called __________.
(b) Loudness is determined by the __________ of vibration.
(c) The unit of frequency is __________
(d) Unwanted sound is called __________ .
(e) Shrillness of a sound is determined by the __________ of vibration.
Q6. The sound from a mosquito is produced when it vibrates its wings at an average rate of 500 vibrations per second. What is the time period of the vibration?
Q9. List sources of noise pollution in your surroundings.