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ASTRONOMY & SPACE · DRAFT PRACTICE BANK

Space Science Questions

Explore 60 original multiple-choice practice questions across three grade bands, from observable solar-system patterns to orbital motion, stellar physics, planetary science, and data analysis.

3 grade bands20 questions per levelInstant answer feedback

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Work through one question at a time. Your progress remains available while you switch between grade bands.

Practice notice: These questions are draft formative material. Official competition scoring remains governed by the GYSO Assessment & Scoring Regulations.

Solar system, Earth–Moon–Sun, gravity & exploration

Grades 4–6

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Question 1 of 20Solar systemFoundation

Which planet is closest to the Sun?

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Official organizers of the Global Youth Science Olympiad.