| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| An earthquake with a 7.0 magnitude on this scale releases about 32 times as much energy as a 6.0 | the Richter scale | $200 | J | GEOLOGY | 2008-07-23 | #5513 | |
| While Mercalli's scale measures earthquake intensity, this is the scale usually used for magnitude | the Richter scale | $400 | DJ | GEOLOGY | 1986-01-23 | #359 |