EASY
8th CBSE
IMPORTANT
Earn 100

Give two harmful effects of noise pollution.

Important Questions on Sound

HARD
8th CBSE
IMPORTANT
OXFORD New Science In Everyday Life 8>Chapter 12 - Sound>Exercises>Q D
How do human beings produce sound while talking?
HARD
8th CBSE
IMPORTANT
OXFORD New Science In Everyday Life 8>Chapter 12 - Sound>Exercises>Q D
Explain how sound waves travel in air.
HARD
8th CBSE
IMPORTANT
OXFORD New Science In Everyday Life 8>Chapter 12 - Sound>Exercises>Q D
Explain briefly how the ear works, and therefore how we hear.
HARD
8th CBSE
IMPORTANT
OXFORD New Science In Everyday Life 8>Chapter 12 - Sound>Exercises>Q D
Explain the three categories of musical instruments.
HARD
8th CBSE
IMPORTANT
OXFORD New Science In Everyday Life 8>Chapter 12 - Sound>Exercises>Q D
What is noise? What is noise pollution? What measures should we take to reduce noise pollution?
HARD
8th CBSE
IMPORTANT
OXFORD New Science In Everyday Life 8>Chapter 12 - Sound>LET'S RECALL

Recall and complete the concept map given below: 

Question Image

MEDIUM
8th CBSE
IMPORTANT
OXFORD New Science In Everyday Life 8>Chapter 12 - Sound>LET'S APPLY
Name one factor that would change when sound travels in a solid (such as glass) instead of air.
 
EASY
8th CBSE
IMPORTANT
OXFORD New Science In Everyday Life 8>Chapter 12 - Sound>LET'S APPLY
Many musical instruments have an air chamber. Why?