Exam-style question
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Redshift measurement: Pick the observation showing recession of a distant galaxy. This tests Explain how temperature affects peak wavelength. in Temperature and black-body radiation.
- A.Redshift measurement answer: Spectral lines shift to longer wavelengths compared with laboratory values.
- B.Redshift measurement distractor: The star appears brighter than the Sun.
- C.Redshift measurement misconception: The telescope eyepiece is shorter.
- D.Redshift measurement off-scope: The CCD pixel count is lower.
Model answer
What a good answer should say
- The correct option is Redshift measurement answer: Spectral lines shift to longer wavelengths compared with laboratory values.
Explanation
Why this works
It is correct because it applies Temperature and black-body radiation evidence to Explain how temperature affects peak wavelength.. The other options are incorrect because they swap in a different astrophysics measurement, telescope property or cosmology idea.
Common mistake
No common mistake is linked to this question yet.