| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| The toy seenhereis demonstrating the conservation of momentum & of this, formulated by Helmholtz in 1847 | energy | $1,200 | DJ | SCIENCE FACT | 2009-01-19 | #5611 | |
| Matter has the "potential" form of this by virtue of its position or structure | energy | $800 | DJ | GENERAL SCIENCE | 1993-07-01 | #2049 |