SOUND

                                                                            Part 1

Sound , what is sound ? Sound is an energy that we use for hearing.

Sound travels away from the object in all direction.

Sound waves are how fast and slow sound travel

Sound waves travel in the air and all directions,then it will vibrates our ear drum

The incoming sound waves that are sent to the eardrum cause it to vibrate.

Part 2

Today , we're making a recycled telephone using a :

• Plastic Glass
• String
• Painting Materials

This is the telephone when its done we can communicate using these telephones as well , as long as the string doesn't bend the string needs to be straight.

So Sound requires a medium to travel such as a telephone.