| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| sound travels fastest in vacuum | 1.43 | 0.7 | 6111 | 57 |
| sound travels fastest in vacuum or steel | 1.86 | 1 | 208 | 83 |
| at what speed sound travel in vacuum | 0.05 | 0.4 | 6615 | 60 |
| sound travel in vacuum speed | 1.88 | 1 | 8441 | 57 |
| does sound travel faster in a vacuum | 0.43 | 0.6 | 2121 | 27 |
| sound speed in vacuum | 0.88 | 0.4 | 7447 | 10 |
| sound travels in vacuum | 0.91 | 0.3 | 6026 | 60 |
| the speed of sound mph in vacuum | 1.29 | 0.9 | 5867 | 71 |
| sound travels fastest in air | 0.34 | 0.6 | 9646 | 24 |
| sound travels fastest in | 1.38 | 0.7 | 4326 | 88 |
| sound waves can travel in a vacuum | 0.47 | 0.7 | 9356 | 22 |
