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EnglandAstronomyQuick questions

Topic 3: The Earth-Moon-Sun system

Quick questions on Earth-Moon-Sun sizes, distances and early measurements - Edexcel GCSE Astronomy

2short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
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State what Eratosthenes measured to find the size of the Earth. [1 mark]
What is q2?
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State why the Sun-Moon-Earth angle is 9090 degrees at first quarter in Aristarchus's method. [1 mark]

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