Question

1. which of the following describes the actual brightness of a star in comparison to other stars?

○ apparent magnitude
○ axis magnitude
○ apparent motion
○ absolute magnitude

Explanation:

• Apparent magnitude refers to how bright a star appears from Earth, not its actual brightness.
• Axis magnitude is not a recognized term related to star brightness.
• Apparent motion refers to the perceived movement of stars, not their brightness.
• Absolute magnitude is the measure of a star's actual brightness when compared to other stars, assuming they are all at a standard distance.

Answer:

D. absolute magnitude