MEDIUM
8th Chhattisgarh Board
IMPORTANT
Earn 100

From the sounds falling on wood, steel, asbestos, paper and thermocol, for which among them echo can and cannot be heard.

Important Questions on Sound

MEDIUM
8th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VIII>Chapter 10 - Sound>NOW ANSWER THESE>Q 1
Give the two examples each for sounds with a high pitch and with a low pitch.
MEDIUM
8th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VIII>Chapter 10 - Sound>NOW ANSWER THESE>Q 2
What kind of sound is produced when vocal cords are thin and stretched?
MEDIUM
8th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VIII>Chapter 10 - Sound>NOW ANSWER THESE>Q 3
How do birds, fishes and flies produce sound?
EASY
8th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VIII>Chapter 10 - Sound>QUESTIONS FOR PRACTICE>Q 1
The range of audible frequencies for human beings is-
EASY
8th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VIII>Chapter 10 - Sound>QUESTIONS FOR PRACTICE>Q 1
On increasing the frequency of a sound, what else increases?
EASY
8th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VIII>Chapter 10 - Sound>QUESTIONS FOR PRACTICE>Q 1
To hear the echo clearly, the minimum distance of the reflecting surface should be -
EASY
8th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VIII>Chapter 10 - Sound>QUESTIONS FOR PRACTICE>Q 1
Sound propagation is not possible -
MEDIUM
8th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VIII>Chapter 10 - Sound>QUESTIONS FOR PRACTICE>Q 2
Write the definitons of amplitude and frequency.