ASTRONOMY HELP!! STAR CHARACTER :
1. The power output at the source is A. Flux, B. Luminosity, C. Apparent brightness.

2. Flux from a source depends on A. its luminosity, B. the area over which the observer receives, C. both A and B.

3. The distance at which a star's parallax is one arc second is called A. a parsec, B. a Light Year, C. stellax.

4. The light flowing through the surface of a star is related to A. its surface temperature, B. its mass, C. its age, D. all of the above.

5. The continuous spectrum peak wavelength gives us the surface temperature by Boltzmann's Law, B. Wien's Law, C. the Law of Temperature.

The sun's temperature-color (spectral) classification A. O, B. A, C. G, D. M.