Propagation of Sound

Sound wave can travel through -

Sound cannot be heard by us when it is produced by a 

Which membrane of the human ear vibrates when sound wave enters our ear?

Sound travels with less speed in -

Sound cannot travel through a -

A single disturbance produced in a slinky is called

The part of the instrument which vibrates to produce sound in a guitar is

The amount of sound energy passing each second through unit area is called the _____ of sound.

The loudness of sound is measured in units of

1 Hz is equal to

Pitch of sound is determined by its 

Which of the following is the range frequencies with which ultrasonic equipments work with?

Sound can travel through

The loudness of sound depends on 

Sound is produced in humans by the vibration of which of these body parts?  

 What is the frequency of the wave with time period 0.025s?

Sound waves are mechanical waves because

A key of a mechanical piano is struck gently and then struck again, but much harder this time. In the second case
 

What is the "note" of a sound?

If an object oscillates $40$ times in one second, What would be its frequency?