Fill in the following blanks with suitable words:
(a) Sound is caused by .................
(b) A sound wave consists of places of higher pressure called ................. and places of................pressure called.................
(c) Wave speed in metres per second equals frequency in ............ multiplied by ..................... in ...................
(d) Sound cannot travel through ................
(e) The speed of sound in a solid is ............... than the speed of sound in air.
(f) When the frequency of the sound is increased, the wavelength.................

(a) Sound is caused by vibration.

(b) A sound wave consists of places of higher pressure called compression and places of lower pressure  called rarefactions.

(c) Wave speed in metres per second equals frequency in Hertz multiplied by wavelength in metres.  

(d) Sound cannot travel through vacuum.

(e) The speed of sound in a solid is more than the speed of sound in air.  

(f) When the frequency of the sound is increased, the wavelength decreases.

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Updated on: 10-Oct-2022

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