| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| The Richter scale is used to measure the magnitude of these | earthquakes | $100 | J | TECHNOLOGY | 1990-11-26 | #1436 | |
| An architectural technique called base isolation uses rubber & steel pads to absorb waves from these | earthquakes | $300 | J | TECHNOLOGY | 1989-12-04 | #1211 |