Exam-style question
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Hubble graph: Choose what the gradient of velocity-distance data represents. This tests Explain how temperature affects peak wavelength. in Temperature and black-body radiation.
- A.Hubble graph answer: The gradient estimates the Hubble constant for cosmic expansion.
- B.Hubble graph distractor: The gradient gives telescope magnification.
- C.Hubble graph misconception: The gradient is the star absolute magnitude.
- D.Hubble graph off-scope: The gradient measures diffraction aperture.
Model answer
What a good answer should say
- The correct option is Hubble graph answer: The gradient estimates the Hubble constant for cosmic expansion.
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.