Exam-style question
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A star classified as G has a surface temperature closest to that of which of the following?.
- A.10 000 K
- B.5 000 K
- C.3 000 K
- D.1 500 K
Model answer
What a good answer should say
- 5 000 K
Explanation
Why this works
Define both: G‑type stars have temperatures around 5 000 K, whereas the other temperatures correspond to hotter (A, B, O) or cooler (K, M) classes. Identify key difference: The temperature range of G stars is distinct from the hotter and cooler classes.
Explain when each applies: G stars are used for stars like the Sun, which have moderate temperatures. Conclude: 5 000 K is the temperature that matches a G‑type star.
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