Ultimate Science Challenge: Can You Score 23/23?

About this quiz

Put your knowledge to the test with 23 science questions covering space, biology, chemistry, Earth science, and physics.

This Medium-level quiz contains 23 questions and takes most readers 8–12 minutes to complete. Your progress is saved automatically, so you can leave and return at any time.

Topics covered

How scoring works

Each correct answer is worth one point. Your final score is the percentage of questions you got right. 80% or higher puts you in the top tier; below 40%, you might want to give it another go.