1.
We hear sound when it enters our ears after passing through _______.
2.
Sound travels _______ through solid objects than the air.
3.
The speed of sound in water is almost _______ times greater than air.
4.
Intensity of sound depends on its _______.
5.
Speed of sound in iron is _______ meter per second.
6.
How does light travel in air?
7.
Speed of sound in water is _______ meter per second.
8.
The intensity of sound _______with the increase of distance from its source.
9.
Sound cannot pass through space due to
10.
The _______ who landed on the moon use wireless radio system for talking.
11.
A vibrating object produces _______.
12.
Buzzing of flies and mosquitoes is due to _______ of their wings.
13.
The louder the sound, the _______ is its intensity.
14.
When water comes in the way of sound travelling through air:
15.
Sound cannot pass through _______.
16.
Which object does reflect maximum light?
17.
When an object vibrates, it forces the air particles around it to vibrate and thus _______ travel from one plane to another.
18.
Speed of sound is maximum in:.
19.
Sound can travel through:
20.
The sounds which are pleasant to our ears are called _______.
21.
Speed of sound in air is _______ meter per second.
22.
Which of the following sounds is called noise?
23.
The sounds which are unpleasant to our ears are called _______.
24.
The speed of sound in solid objects is almost _______ times greater than air.
25.
Sound is a form of energy which produces _______ in matter particles.
Please Write Your Comments