Thats fine..most people I know don't know what a shofar is. The shofar is the biblical trumpet that was used outside of the temple. It is mentioned 80 times in the O.T. as "trumpet" The other trumpet, the silver trumpets, were used in the temple.The Levites played the silver trumpets. I have lots of verses, but pretty much whenever we see the word "trumpet" outside of the temple it is the shofar. It is a rams horn or gazelle, goat, or kudu horn. It was the horn that was blown outside the walls of Jericho, and Gideon's men used them at the "battle" with Midianites. The Jewish people still blow shofars on the Day of Atonement and on Yom Kippur.Here is a website that shows the basic shapes of shofars.
http://www114.rapidsite.net/minis4/indexx.html
There are three kinds of shofar blasts:
Shevarim- Call to repentance. It sounds like someone crying, because you blow three short low-to-high blasts.
Teruah- This is the call to battle.Blow 9 stoccato blasts.
Tekiah- This is a heralding call, heralding the presence of the king.
Tekiah G'dolah- This is the call to worship, one long note held as long as possible.
Here is a link showing the general shapes of different types of shofars.
Kippur.
http://www114.rapidsite.net/minis4/indexx.html
Also, if you have the movie Ben-Hur, they play the shofar when Jesus is born.
Hope this is helpful,
Mike