The relative brightness of a star as seen in Earth's sky is called
A) absolute magnitude.
B) apparent magnitude.
C) surface temperature.
D) luminosity.

Question

Quizplus · Accepted Answer

Apparent magnitude measures how bright a star appears from Earth, not its intrinsic brightness, which is measured by absolute magnitude. Surface temperature and luminosity are different properties of a star.

The Relative Brightness of a Star as Seen in Earth's