| Keyword | CPC | PCC | Volume | Length string | Score |
|---|---|---|---|---|---|
| mid ocean ridges are formed by what boundary | 1.47 | 1 | 2853 | 44 | 38 |
| how are mid ocean ridges formed | 0.95 | 0.8 | 5473 | 31 | 27 |
| what boundary causes mid ocean ridge | 0.23 | 0.8 | 9498 | 36 | 100 |
| where do mid ocean ridges form | 1.04 | 1 | 8253 | 30 | 8 |
| what are mid ocean ridges formed by | 0.82 | 0.4 | 7021 | 35 | 16 |
| mid ocean ridges formed | 1.82 | 0.7 | 2568 | 23 | 22 |
| explain how mid ocean ridges are formed | 1.9 | 0.8 | 2478 | 39 | 1 |
| what is formed at mid ocean ridges | 1.77 | 1 | 6283 | 34 | 73 |
| new crust is formed at mid ocean ridges | 1.76 | 0.1 | 6700 | 39 | 90 |
