| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| why do hot air rises | 1.2 | 1 | 1378 | 12 |
| if hot air rises why are mountains cold | 1.86 | 0.4 | 6747 | 17 |
| why hot air balloon rises up | 1.88 | 0.1 | 1427 | 3 |
| why is hot air hot and rises up | 1.97 | 0.4 | 361 | 93 |
| why a balloon inflated with hot air rises up | 1.74 | 0.4 | 1728 | 71 |
| why hot air rises up | 0.7 | 0.3 | 4860 | 95 |
| why hot air rises and cold air sinks | 1.93 | 0.2 | 4853 | 63 |
| explain why a hot air balloon rises | 0.28 | 0.5 | 830 | 18 |
| explain why air rises above the hot flame | 1.48 | 0.4 | 2371 | 69 |
| why are mountains cold at the top | 1.32 | 0.4 | 294 | 13 |
| why are mountains so cold | 0.89 | 0.8 | 6058 | 2 |
| why is it cold in mountains | 0.05 | 0.2 | 9019 | 14 |
| why are mountains colder at the top | 1.16 | 0.2 | 1761 | 70 |
| why mountains are colder | 0.28 | 0.5 | 9511 | 28 |
| why is it colder in the mountains | 1.75 | 0.3 | 2639 | 15 |
| why are the tops of mountains colder | 0.82 | 0.1 | 2513 | 86 |
| why it is cold on mountain top | 0.9 | 0.8 | 1810 | 11 |
| why is it cold in higher altitudes | 0.03 | 0.2 | 1201 | 81 |
| why is it cold at high altitude | 1.68 | 1 | 9275 | 80 |
| why are mountain tops colder | 1.32 | 0.5 | 6416 | 34 |
| why is it colder at higher altitude | 1.83 | 0.2 | 3172 | 76 |
