Exam-style question
Try this first
When comparing two stars, one of spectral class A and another of spectral class K, which star has the higher surface temperature?.
Model answer
What a good answer should say
- The A‑type star has the higher surface temperature because spectral class A lies earlier in the sequence than K, indicating a hotter photosphere.
Explanation
Why this works
The answer uses the compare reasoning pattern: it defines both classes, identifies the key difference (position in the sequence), explains that earlier classes are hotter, and concludes that the A‑type star is hotter, thereby testing understanding of spectral class temperature comparison.
Common mistake
No common mistake is linked to this question yet.