A student finds data showing properties of different main sequence stars.
| Mass of star (relative to the Sun) | Surface temperature (K) |
|---|---|
| 25.0 | 35,000 |
| 15.0 | 30,000 |
| 3.0 | 11,000 |
| 1.5 | 7,000 |
| 1.0 (the Sun) | 5,800 |
| 0.8 | 5,000 |
| 0.5 | 3,800 |
| 0.1 | 2,900 |
State how the surface temperature of a main sequence star changes as the mass of the star increases.