| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| sources of background radiation gcse | 1.68 | 1 | 5305 | 93 | 36 |
| sources | 1.18 | 0.6 | 4316 | 18 | 7 |
| of | 0.63 | 0.7 | 7285 | 82 | 2 |
| background | 0.63 | 0.2 | 9206 | 79 | 10 |
| radiation | 1.11 | 0.5 | 6353 | 30 | 9 |
| gcse | 0.29 | 0.3 | 8574 | 28 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| sources of background radiation gcse | 0.19 | 0.6 | 2209 | 55 |
