Sound

Sound

1. Uses

   • Medicine
     • To heal wounds at a faster rate without pain
     • To capture images of babies in the womb
   • Warning of Danger
     • Fire Alarm
     • Air Raid Siren
     • Vehicle Horn
   • Entertainment
     • Music
     • Watching the television with sound

2. How it works

   • The air molecules are pushed from the source.
     • They then collide with the surrounding air molecules.
       • This will travel all the way to our ear where it will then be converted into electrical signals.
         • This allows us to hear things.

3. Sound travels in solid the fastest. At a speed of 6000 m/s.

   • It travels at a medium speed in liquid. At a speed of 1500 m/s.
     • It travels the slowest in air. At a speed of 330 m/s.