Jordan Jenkins, 15, a Northview High school freshman, demonstrates kinetic energy with a gauss rifle. Jenkins used a series of very powerful magnets - each one capable of lifting 90 pounds -- and a series of steel balls to demonstrate how magnets can be used to multiply energy. Each magnet increased the speed of a steel ball. The ball at the end of the channeled stick was used to launch a toy car mounted on a plastic track.
Sally Liechty, organizer of this year's science fair, said 180 students were involved, "the most we've ever had". All Clay Community Schools plus Cornerstone and Annunciation were involved in Saturday's show at NHS.
Some students were required to build an exhibit for credit, many others participated voluntarily.
Liechty is a teacher in the NHS science department.