Question for:
What hard, tough chemical or biochemical sedimentary rock that breaks with a conchoidal fracture was instrumental in early toolmaking? Grimes Graves in Norfolk, England, is a prehistoric mine that was dedicated to the extraction of this rock.
Clues
Possible QScores
100
82.73
35.94
22.4
Answer Breakdown
| Clues Used | |||||
|---|---|---|---|---|---|
| 0 | 1 | 2 | 3 | Total | |
| Submissions | 75 | 53 | 138 | 35 | 301 |
| % of Total | 24.92% | 17.61% | 45.85% | 11.63% | |
| Clues Used | |||||
| 0 | 1 | 2 | 3 | Total | |
| Correct | 58 | 52 | 135 | 35 | 280 |
| % of Correct | 20.71% | 18.57% | 48.21% | 12.5% | |
| % of Answers | 19.27% | 17.28% | 44.85% | 11.63% | |
| Clues Used | |||||
| 0 | 1 | 2 | 3 | Total | |
| Incorrect | 17 | 1 | 3 | 0 | 21 |
| % of Incorrect | 80.95% | 4.76% | 14.29% | 0% | |
| % of Answers | 5.65% | 0.33% | 1% | 0% | |
93.02%
6.98%
75.08%
Most Common Incorrect Answer
| Answer | Count |
|---|---|
| “Slate” | 3 |