you block the puck.
No. In hockey, you can substitute without a stoppage in play. In football (american soccer) you need to wait for play to stop.
Every player needs a mouthguard, shinpads, perhaps a glove (or two), of course a stick, and if you are a goalie, will also need pads. You might have to find a suitable place to play on, enough equipped people to play with, and maybe an umpire.
Player-Skates, Shin pads, can, socks, shoulder pads, hockey pants, elbow pads, jersey, helmet, gloves, stick. Some people also wear visor or cage on their helmets by choice or by league rules. Some also where a neck guard, after a guy in the NHL (cant rmmbr his name) got his throat cut open by a skate (he did live). Goalie-Goalie skates (most goalies wear these, but in pond hockey, shinny hockey, or fun hockey you will find some that wear regular skates), goalie pads, socks, goalie can, hockey pants (goalie type), monkey suite (also known as a chest protector or other names), jersey, gloves (one blocker, one catcher), goalie helmet. Some goalies also wear a goalie neck guard, which is a curved plastic shield that hangs in front of their neck from their helmet.
In some Junior Games you play with 8 a-side and a goalie, but in senior hockey you play with 11 a-side and a goalie.
Depends on your league. I play in the Maryland Scholastic Hockey League (MSHL) and they still allow 38" tall and 12" wide pads, but next year plan to change to an 11" width. You would need to talk to your goalie coach or someone from the league
What you wear, besides clothes, are shin pads, hockey socks and boots. You will also need a hockey stick and you play with a ball.
Ice Hockey Goalies do not always wear their team socks under their pads (Practices usually just sweatpants) although for games they mainly do. If you are going to play Ice Hockey, you most definitely need to buy a Goalie Jock. They are padded and usually have thicker plastic for the "jock" part.
To play full contact ice hockey you need the following equipment; skates, shin-guards, hockey pants, an athletic cup, hockey shoulder pads, elbow pads, hockey gloves (and sometimes wrist guards), a helmet with or without a full cage or shield, and a mouth guard.
go along to you're nearest ice hockey team and express you're desires to play hockey in paticular to play in goals.