In music, speed is referred to as tempo. A tempo marking is usually given at the beginning of a piece.
Many musical terms are in Italian because it was mainly Italian composers - such as Vivaldi, Monteverdi, da Palestrina, and Gabrieli - who invented musical notation as we know it today:
You only need to remember the four tempos below for your exam:
Adagio - slow
Andante - a walking pace
Moderato - moderately
Allegro - quick and lively
Change of tempo
Sometimes a piece of music changes tempo. The following words can be used to describe tempo changes:
Accelerando - getting faster
Rallentando - slowing down, normally for emphasis
Ritardando - slowing down, holding back
A tempo - return to the original tempo after speeding up or slowing down