EASY
8th Kerala Board
IMPORTANT
Earn 100

Why do astronauts use radio devices to communicate with one another?

Important Questions on Sound

EASY
8th Kerala Board
IMPORTANT
Science for Class 8 - Part 2>Chapter 8 - Sound>Exercise 3>Q 1
 What are the disadvantages of noise pollution?
MEDIUM
8th Kerala Board
IMPORTANT
Science for Class 8 - Part 2>Chapter 8 - Sound>Exercise 3>Q 2
What can we do to reduce noise pollution?
EASY
8th Kerala Board
IMPORTANT
Science for Class 8 - Part 2>Chapter 8 - Sound>Let us assess>Q 1
If a tuning fork vibrates 480 times in one second, what would be its natural frequency in Hz ?
MEDIUM
8th Kerala Board
IMPORTANT
Science for Class 8 - Part 2>Chapter 8 - Sound>Let us assess>Q 2
If a simple pendulum oscillates 10 times in 10 second, what would be its frequency in Hz ?
MEDIUM
8th Kerala Board
IMPORTANT
Science for Class 8 - Part 2>Chapter 8 - Sound>Let us assess>Q 3
What are the factors influencing the natural frequency of a body?
MEDIUM
8th Kerala Board
IMPORTANT
Science for Class 8 - Part 2>Chapter 8 - Sound>Let us assess>Q 4
The frequencies of certain tuning forks are given below. Find out which among these have the highest and the smallest pitches.
(256 Hz, 512 Hz, 480 Hz, 288 Hz)
MEDIUM
8th Kerala Board
IMPORTANT
Science for Class 8 - Part 2>Chapter 8 - Sound>Let us assess>Q 5
In the sources of sound given below, vibration in which main part produces sound?
a. Chenda b. Flute c. Vocal cord
MEDIUM
8th Kerala Board
IMPORTANT
Science for Class 8 - Part 2>Chapter 8 - Sound>Let us assess>Q 6
Design an activity to prove that sound can be propagated even through solid substances.