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American football - Encyclopedia Jr, free information reference for Kids (3612 words) |
 | American football is played on a rectangular field 120 yards (110 meters) long by 53 1/3 yards (49 meters) wide. |
 | The player with the ball is forced to the ground (tackled) or has his forward progress halted by members of the other team (as determined by an official). |
 | Both American football and soccer have their origins in varieties of football played in the United Kingdom in the mid-19th century, and American football is directly descended from rugby football. |
| American football (4565 words) |
 | The ball used in American football has a pointed prolate spheroid (also known as vesica piscis) shape, and has a large set of stitches along one side. |
 | When a defensive player catches a forward pass it is called an interception, and the player who makes the interception can run with the ball until he is tackled or forced out of bounds. |
 | Most penalties result in moving the football either towards the defense's end zone in the case of a defensive penalty, or away from the defense's end zone in the case of an offensive penalty. |