Exam-style question
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Which statement correctly distinguishes between apparent magnitude and absolute magnitude?.
- A.Apparent magnitude measures brightness as seen from Earth, while absolute magnitude measures intrinsic brightness at a standard distance.
- B.Apparent magnitude is the same as absolute magnitude.
- C.Absolute magnitude is always greater than apparent magnitude.
- D.Apparent magnitude is measured in parsecs, while absolute magnitude is measured in light-years.
Model answer
What a good answer should say
- Apparent magnitude measures brightness as seen from Earth, while absolute magnitude measures intrinsic brightness at a standard distance.
Explanation
Why this works
This statement accurately describes the definitions of apparent and absolute magnitude, highlighting their differences in measurement context.
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