NCERT Class 9 Science Chapter 12 Sound Quiz

How does the sound produced by a vibrating object in a medium reach your ear?

Explain how sound is produced by your school bell.

Why are sound waves called mechanical waves?

Suppose you and your friend are on the moon. Will you be able to hear any sound produced by your friend?

Which wave property determines (a) loudness, (b) pitch?

Guess which sound has a higher pitch: guitar or car horn?

What are the wavelength, frequency, time period and amplitude of a sound wave?

How are the wavelength and frequency of a sound wave related to its speed?

Calculate the wavelength of a sound wave whose frequency is 220 Hz and speed is 440 m/s in a given medium.

A person is listening to a tone of 500 Hz, sitting at a distance of 450 m from the source of the sound. What is the time interval between successive compressions from the source?