EASY
8th CBSE
IMPORTANT
Earn 100

Dog whistles can only be heard by dogs and not by human beings. Why do you think this happens? What range of sound does this whistle produce? 

Important Questions on Sound

MEDIUM
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 16 - Sound>EXERCISE>Q 4
In case dynamite is blasted to break big boulders to make smaller stones, will the tremor be felt before hearing the sound or vice versa? Explain. 
EASY
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 16 - Sound>EXERCISE>Q 5
If we shout on the Moon, does the sound travel faster or slower than on Earth? Why? 
EASY
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 16 - Sound>EXERCISE>Q 1
We can hear the buzzing of a bee as it flaps its wings, but cannot hear a bird when it flies. Why?
EASY
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 16 - Sound>EXERCISE>Q 2
Why cannot we hear a vibrating pendulum?
MEDIUM
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 16 - Sound>EXERCISE>FUN ACTIVITIES

Name the musical instrument. Also identify its type.

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