| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| This rocky, outermost layer of the earth is only 5 miles thick under the oceans, 25 miles under the continents | the crust DD | $2,000 | DJ | SCIENCE CLASS | 2007-04-02 | #5201 | |
| Under the oceans, this part of the Earth is generally only 3-5 miles thick | the crust | $200 | J | GENERAL SCIENCE | 1992-05-21 | #1794 | |
| This geologic layer of the Earth represents less than 0.1 % of the Earth's total volume | the crust | $600 | DJ | PHYSICAL SCIENCE | 1988-09-15 | #924 |