The minor scale or to give it it's full name, the natural minor scale is the Aeolian mode. The intervals between these notes are as follows (where T = tone or two frets, S = semitone or one fret): T S T T S T T. (R,M2,m3,P4,P5,m6,m7,8ve)

A minor scale (A, B, C, D, E, F, G, A)