Exercises

Author:E Doris James, Vandana Tirath, Anton Siromani & Kiran Banerji

E Doris James Science Solutions for Exercises

Simple step-by-step solutions to Exercises questions of Sound from New Science Ahead 8. Also get 3D topic explainers, cheat sheets, and unlimited doubts solving on EMBIBE.

Questions from Exercises with Hints & Solutions

EASY
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 13 - Sound>Exercises>Q E

Human speech is possible due to the passage of air through the oesophagus.

EASY
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 13 - Sound>Exercises>Q E

The absorption and slow release of sound waves by surfaces cause echoes.

EASY
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 13 - Sound>Exercises>Q E

Sound of frequency above 20,000 Hz is called ultrasonic sound.

EASY
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 13 - Sound>Exercises>Q E

Excessive noise can cause deafness.

EASY
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 13 - Sound>Exercises>Q E

Curtains, cushions and rugs in a room absorb sound.

MEDIUM
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 13 - Sound>Exercises>Q F

Describe the structure and function of the eardrum.

EASY
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 13 - Sound>Exercises>Q F

What kind of material can be used in the house to make it more soundproof?

MEDIUM
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 13 - Sound>Exercises>Q G

What are the characteristics of vibrations? Describe them.