What are the different types of juries?

Petit Jury:
If you are selected to serve on a "Petit Jury," you will hear a case which is criminal or civil. A criminal trial will involve a felony (a more serious type of crime). The law requires twelve (12) jurors to be seated in a criminal case, only eight (8) jurors are required in a civil case. In a criminal trial, the jury must find a defendant "guilty" or "not guilty" by unanimous vote. In civil cases the law requires a vote of at least three-fourths of the jury to reach a verdict. Most jury trials will seat an "alternative-juror(s)," in the event, sickness or unforeseen circumstances arise in which one of the regular jurors are unable to attend some portion of the trial. The "alternative-juror" hears the trial, in its entirety, but does not participate in jury deliberations.

Grand Jury:
A "Grand Jury" hears evidence about crimes and decides whether or not a person should be "indicted" and tried for committing a crime. The grand jury does not decide guilt or innocence. If you are summoned to court to be selected for service on a grand jury, you will probably serve for a longer period of time than if you served on a petit jury.