Sound+barrier

__ **The Sound Barrier** __

What is it- The sound barrier is defined as a sudden increase of drag when an object reaches the speed of sound.
==How it works-The sound barrier can only be reached by objects moving at (340 m/s) or greater, it is accompnied by a large boom (sonic boom). When an plane is going through the air it creates air wave similar to the waves made by a ships bow. When the plane reaches the speed of sound all these waves combine. The boom is the all the waves that are usually propagated ahead of the plane (figure 1), When it reaches the speed of sound (figure 2) all the waves in front combine so at first we hear nothing than the sonic booms comes (Figure 3).== ==How it relates to sound- It relates to sound because when an object reaches speeds greater than the speed of sound there is a sonic boom. To understand what causes the boom we must first know how sound waves travel.== [] [] []

bY COLBY DUFORT