The aim of a hockey game is to get the puck — a 3-inch (7.6-centimeter) diameter rubber disc — completely across the goal line into the net. Players cannot purposely kick or hit the puck in with their hands or with a stick above the net, although almost any other way of getting the puck in there counts as a goal. Penalty shots at goal are given in certain circumstances. The team with the most goals at the end of the game wins.
Answered by: Science Channel