GRADE 3â5 CONCEPTS â  When ice is warmed to its melting point, itmelts into water. â  When liquid water is cooled below a tem-perature known as the freezing point ofwater the liquid water becomes solid ice. â  The melting-point and freezing point of asubstance are essentially the same.
In American Football, there are 100 yards on the field (120 including the 10 yard endzones), however they don't start in the middle of the field...(except for the coin toss).
Near each end of the field is a goal line; they are 100 yards apart. A scoring area called an end zone extends 10 yards beyond each goal line to each end line. Yard lines cross the field every 5 yards, and are numbered from each goal line to the 50-yard line, or midfield (similar to a typical rugby league field). Two rows of lines, known as hash marks parallel the side lines near the middle of the field.