Exam-style question
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GALAXY RECESSION case: Which option best applies the AQA A-Level Physics objective "Use distance modulus relationships where appropriate." in Absolute magnitude using the relevant astronomical observation rather than a generic calculation?.
- A.astro-224-galaxy-recession: Use Use distance modulus relationships where appropriate. in Absolute magnitude.
- B.astro-224-galaxy-recession: Swap Absolute magnitude with a different Classification of stars method.
- C.astro-224-galaxy-recession: Give a number or label without linking it to the astronomical evidence.
- D.astro-224-galaxy-recession: Ignore the observation and use a generic star or telescope statement.
Model answer
What a good answer should say
- The correct option is astro-224-galaxy-recession: Use Use distance modulus relationships where appropriate.
- in Absolute magnitude.
Explanation
Why this works
It is correct because the galaxy recession context supports use distance modulus relationships where appropriate. The distractors are weaker because they confuse observational evidence, distance scale, spectra, telescope resolution, brightness or cosmological reasoning with a nearby but different astrophysics idea.
Common mistake
No common mistake is linked to this question yet.