Exercise

Author:Dhiren M Doshi

Dhiren M Doshi Science Solutions for Exercise

Simple step-by-step solutions to Exercise questions of Sound from LEARNING SCIENCE. Also get 3D topic explainers, cheat sheets, and unlimited doubts solving on EMBIBE.

Questions from Exercise with Hints & Solutions

HARD
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 13 - Sound>Exercise>Q 1

What are the characteristics of sound? Define them. 

HARD
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 13 - Sound>Exercise>Q 2

Explain the working of human ear with the help of a flow chart. 

MEDIUM
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 13 - Sound>Exercise>Q 3

What is noise pollution? 

MEDIUM
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 13 - Sound>Exercise>Q 3

 Name any three sources of noise pollution. 

HARD
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 13 - Sound>Exercise>Q 3

Write any five measures to reduce noise pollution. 

MEDIUM
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 13 - Sound>Exercise>Q 2

A ringing alarm clock is placed in vacuum. Why will you not be able to hear its ticking sound? 

HARD
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 13 - Sound>Exercise>Q 4

By how much will the loudness of a sound change when the amplitude of vibrations is

(a) tripled 

(b) doubled?

HARD
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 13 - Sound>Exercise>Q 5

When you listen to the sound produced by a tuning fork and the sound of the same frequency produced by a sitar, you find that tuning fork sounds flat whereas the sitar sounds shrill. Why?