Exam-style question
Try this first
Explain how the inverse-square law applies to the apparent brightness of stars and provide an example.
Model answer
What a good answer should say
- The inverse-square law states that the apparent brightness of a star decreases with the square of the distance from the observer.
- For example, if a star is twice as far away, its brightness is reduced to one-fourth of its original value.
Explanation
Why this works
This question assesses the application of the inverse-square law in understanding stellar brightness. A strong answer not only explains the law but also provides a clear example, demonstrating the relationship between distance and brightness.
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