EASY
8th CBSE
IMPORTANT
Earn 100

Differentiate infrasonic sounds and ultrasonic sounds.

Important Questions on Sound

EASY
8th CBSE
IMPORTANT
All in One - SCIENCE CBSE Class 8>Chapter 13 - Sound>Chapter Test>Q 10
The moment we put our ear to the railway line, we can hear the sound of an approaching train even when the train is far off but its sound cannot be heard through the air. Why?
EASY
8th CBSE
IMPORTANT
All in One - SCIENCE CBSE Class 8>Chapter 13 - Sound>Chapter Test>Q 11

Thunder is heard after lighting. Give reasons.


EASY
8th CBSE
IMPORTANT
All in One - SCIENCE CBSE Class 8>Chapter 13 - Sound>Chapter Test>Q 12

Why are the voices of men and women different?


EASY
8th CBSE
IMPORTANT
All in One - SCIENCE CBSE Class 8>Chapter 13 - Sound>Chapter Test>Q 13

How is musical sound different from noise?

EASY
8th CBSE
IMPORTANT
All in One - SCIENCE CBSE Class 8>Chapter 13 - Sound>Chapter Test>Q 14

Write some harmful effects of noise pollution.


MEDIUM
8th CBSE
IMPORTANT
All in One - SCIENCE CBSE Class 8>Chapter 13 - Sound>Chapter Test>Q 15

Draw a labelled diagram of larynx and explain its functions.


HARD
8th CBSE
IMPORTANT
All in One - SCIENCE CBSE Class 8>Chapter 13 - Sound>Chapter Test>Q 16
Draw a neat labelled diagram of human ear and explain its working.
MEDIUM
8th CBSE
IMPORTANT
All in One - SCIENCE CBSE Class 8>Chapter 13 - Sound>Chapter Test>Q 17

Mention the frequency of sound produced when the vocal cords are

(a) tight and thin

(b) loose and thick.