100%
nothing
A hat trick
Yes, in ice hockey, the puck must completely cross the goal line for a goal to be scored.
During a hockey game years ago, after a player scored three goals, fans tossed hats onto the ice, and the phrase hat trick came to be.
Probably Darryl Sittler, since the question is posed in "Ice Hockey" category. Mr. Sittler scored 5 goals in a playoff game, and 6 goals and 4 assists in a regular season game for a 10 point total that has never been matched.
8
floor hockey is similar to ice hockey with same sized goals
Forced goals
Sidney Crosby
Goals scored on the power play do not count as a +1 (although goals given up on the power play, shorthanded, count as a -1). So, theoretically, if three of the five points were scored on the power play and he was on the ice when all three goals were scored against he would be a -1. (+2 - 3 = -1)
The minus sign in hockey means that a player was on the ice when a goal was scored against his/her team. Golies do not receive a +/- rating.
In ice hockey, when a player scores four goals in one game.