Let's Find Out about Sound !!!

Let's Find Out about Sound !!!!!!!!!

What is sound ?

Sound is an amount of vibration that enters our ears. 

How does sound travels ? 

Sound travels in all directions. When an object produces sound, the sound travels away from the object in all directions. Sound can travel through water and air. 

What is sound wave ? 

Sound wave is the squezing and strechting of sound.

How do we hear sound , and how might it affect hearing ?

Sound waves travel to the air and enters the ear drum and allows it to vibrate.
To much loudness might affect our hearing or can cause us deafness.

How do sound transfer to the inner drums ?

The incoming sound waves that are sent to the eardrum cause it to vibrate. These vibrations in turn cause movement in three small bones called ossides, that are connected to the inner ear.

Sound travels away from the source

When we drop a small pebble into a pond, we can see ripples on the surface of the water. These ripples travel away from the pebble in all directions.

When an object produces a sound, the sound travels away from the object in all directions. Object that produced sound is called source of the sound.

The loudness of the sound decreases as the sound travels farther away from the source. When we are very close to the source of the sound, it becames loud. When we move away from the source of the sound, the sound becames softer.

Sound requires a medium to travel 

Sound requires medium to travel. When an alarm clock rings, we can hear the sound because the sounds travels through the air reaches our ears. In this case, air is the medium through which sound travels.

A space has no matter in it is called a vacumm. Vacumm can be created in an empty jar by sucking out all the air from it. We cannot hear an alarm clock when it rings inside a jar with a vacumm because there is no air or any other medium through which the sound travels. 

 

Sound can travel through solid, liquid or gaseous material. Travels at different speeds in different media.

Sound travels in all directions. Sound travels faster through most solids and liquids than in the air. It is why we can hear the other person talking into the tin can at the other end of the tin can telephone. Sound travels faster through a string than through the air.