Hockey is a sport of finesse, toughness, and speed all wrapped up by player talent. Hockey can be played on any surface, though ice and hard rubber "roller turf" are the two major fields currently played on by professionals. All though to some these two variations on hockey may seem the same, they actually have many differences. Roller hockey contrasts that of ice in several ways. While the playing surfaces are the most obvious difference, number of players, periods, and skates also vary. The most obvious difference between the two sports is their playing surfaces. Ice hockey is played on a three inch layer of ice cooled to approximately ten degrees Fahrenheit. Roller hockey is played on a two inch layer of a plastic and rubber composite compound. Both types have specific advantages and disadvantages. Roller "turf" almost never needs any repairs while ice must be resurfaced between every period. Ice is generally known for being a faster surface but a good argument to that is the fact that the players and equipment have more to do with speed than the surface. Hockey would not be hockey without the players. The NHL is famous for its five on five play. Roller hockey, on the other hand, is four on four. Strategically in ice hockey two players stay primarily on defense while the other three are sent forward for offense. Roller hockey, however, with only two forwards for offense, one of the two defense-men must move up to join the attack in order for teams to have an effective attack. While causing a minor headache to defensive players, having four players on the floor allows more open ice to skate and make plays in. This too has a downfall though, four players doing the work of five can be tiresome to players leading to the need for shorter periods.Ice hockey by league standards consists of three-twenty minute with a fifteen minute intermission after the first and second periods. Roller hockey plays four-fifteen minute peri...