| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| do photons travel at the speed of light | 1.69 | 0.1 | 2372 | 20 |
| do all photons travel at the speed of light | 0.01 | 1 | 2716 | 11 |
| photons always travel at the speed of light | 1.34 | 0.5 | 2570 | 83 |
| why do photons travel at the speed of light | 0.04 | 1 | 5387 | 98 |
| why photons always travel at speed of light | 0.97 | 0.7 | 9730 | 61 |
| can photons travel faster than light | 1.34 | 1 | 9469 | 49 |
| photons speed of light | 0.02 | 0.2 | 9110 | 72 |
| does light travel as photons | 0.03 | 1 | 3696 | 47 |
| can photons travel slower than light | 1.49 | 0.7 | 8254 | 58 |
| how fast do photons travel | 1.57 | 0.6 | 9933 | 95 |
| what travel at the speed of light | 0.57 | 0.6 | 6429 | 31 |
| do photons travel in waves | 1.65 | 1 | 1985 | 86 |
| do photons make light | 0.59 | 0.1 | 6468 | 44 |
| the speed of a photon is always | 1.95 | 0.7 | 77 | 55 |
| how fast do photons move | 1.18 | 0.7 | 8610 | 54 |
| do photons lose energy as they travel | 0.83 | 0.1 | 1052 | 68 |
| does light travel as particles called photons | 0.8 | 0.5 | 6443 | 96 |
| how far can photons travel | 1.95 | 0.4 | 5008 | 23 |
| does light travel at different speeds | 0.96 | 0.7 | 913 | 70 |
| how fast are photons | 1.72 | 0.7 | 2884 | 70 |
| how does energy travel as photons | 1.36 | 0.1 | 2417 | 88 |
