| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| why does warm air expand | 1.32 | 0.2 | 920 | 89 |
| why does warm air rises | 0.67 | 0.4 | 8721 | 51 |
| why does air expand when heated | 0.23 | 0.4 | 2903 | 92 |
| why does hot air expand | 1.71 | 0.1 | 6706 | 1 |
| does air warm as it expands | 0.49 | 1 | 7105 | 13 |
| does warm air contract or expand | 0.33 | 0.3 | 3857 | 82 |
| why does air cool when it expands | 1.82 | 0.1 | 8853 | 72 |
| why does warmer air rise | 1.99 | 0.9 | 2937 | 55 |
| why does air warm as it descends | 0.89 | 0.2 | 4503 | 51 |
| does heated air expand | 0.08 | 0.1 | 1590 | 1 |
| why is hot air hot and expands | 1.41 | 1 | 1059 | 38 |
| does air expand when cooled | 1.7 | 1 | 2479 | 48 |
| why air expands when it rises | 0.1 | 0.1 | 7160 | 89 |
| what happens to warm air | 0.68 | 0.2 | 8741 | 39 |
