| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| earth impact crater database | 1.04 | 0.8 | 3552 | 60 | 28 |
| earth | 0.08 | 0.1 | 204 | 11 | 5 |
| impact | 0.92 | 0.2 | 1520 | 57 | 6 |
| crater | 0.2 | 0.8 | 3932 | 50 | 6 |
| database | 1.4 | 0.2 | 581 | 7 | 8 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| earth impact crater database | 1.73 | 0.7 | 1529 | 80 |
| earth impact crater map | 0.04 | 0.7 | 4312 | 29 |
| impact crater on earth | 0.88 | 0.8 | 2165 | 11 |
| impact craters on earth map | 1.74 | 0.5 | 7730 | 23 |
| crater impact sites on earth | 1.36 | 0.4 | 8572 | 51 |
| impact crater map of the world | 1.36 | 0.6 | 9638 | 40 |
| most recent impact crater on earth | 0.27 | 1 | 1698 | 89 |
| list of impact craters on earth | 1.09 | 0.8 | 5622 | 56 |
| the largest verified impact crater on earth | 1.98 | 0.7 | 244 | 83 |
| large impact craters on earth | 1.92 | 1 | 4383 | 6 |
| visible impact craters on earth | 1.37 | 0.8 | 4247 | 14 |
| the largest impact crater on earth | 0.94 | 0.6 | 24 | 4 |
| a new lunar impact crater database | 1.33 | 0.9 | 4098 | 81 |
| biggest impact crater on earth | 0.03 | 0.1 | 3478 | 77 |
| what is an impact crater | 1.29 | 0.7 | 2518 | 23 |
| the nature of impact craters | 1.26 | 0.2 | 1897 | 80 |
| impact craters in usa | 0.62 | 0.5 | 1345 | 56 |
| structural geology of impact craters | 1.86 | 0.8 | 5869 | 32 |
| earth's largest impact craters | 1.5 | 0.9 | 3020 | 47 |
