SOUND- GRADE 8

Sound propagates fastest through ________

The pitch of sound is proportional to _____

Middle ear consists of ___ bone/s and its functions is to ____ sound vibrations.

• 2, transfer

• 3, transfer

• 2, transfer

• 3, amplify

The unit to measure loudness is _____

Sound needs a medium to propagate.

• true

• false

The frequency of sound produced by a mosquito is ___ if it produces 750 vibrations in a second.

The audible range for human being is ____

The nerve impulses from cochlea is transported to brain by ______

If the amplitude of sound increases 6 times, loudness of sound increases ____ times

Which among the following are percussion instruments?

• veena, guitar, flute

• veena, tabla, flute

• tabla, flute, drum

• tabla, drum, mrudangam