fill in the blanks.

Questions

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7 questions · timed · auto-graded

Question 11 Mark

The repetition of sound produced due to the reflection of sound waves from a reflecting surface is known as an _____________

Answer

echo

Question 21 Mark

Loudness of a sound depends upon the ____________ of the sound.

Answer

amplitude

Question 31 Mark

The SI unit of frequency is __________

Answer

hertz

Question 41 Mark

The larynx has two folds called _________

Answer

vocal cords

Question 51 Mark

Vibration means ________ motion of an object

Answer

to-and-fro

Question 61 Mark

Sound travels in the form of _________

Answer

waves

Question 71 Mark

An object that does not vibrate cannot produce __________

Answer

sound

fill in the blanks. - PHYSICS STD 7 Questions - Vidyadip

PHYSICS fill in the blanks.