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