http://revach.net/article.php?id=4062

Section: Revach   Category: Lists
10 Reasons Why We Blow A Shofar On Rosh Hashana
The Torah says we blow the Shofar on Rosh HaShana.  Of course this does not need a reason but Chazal have enumerated a number of them so that we can add some Kavana to this Mitzva.  One of our readers sent us a list of ten reasons compiled by the 10th century Gaon, Rabbi Saadia Gaon.  To see the list click here for Revavch Lists.