| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| Below the atmosphere is this "sphere", from the Greek for "stone" | the lithosphere | $2,000 | DJ | SCIENCE | 2008-01-10 | #5374 | |
| In contrast to the hydrosphere, it's the term for the rocky part of the Earth, or its crust | the lithosphere | $1,000 | DJ | SCIENCE | 1999-04-01 | #3364 | |
| It's the solid part of the earth as distinguished from the atmosphere & hydrosphere | the lithosphere | $800 | DJ | SCIENCE | 1992-05-15 | #1790 |