Science tests & quizzes
Pick a subject, then take a 10-question test. Read why each answer is right — and why the others aren’t.
Quizzes
Astronomy Tests
Explore free astronomy tests on About Science: planets, orbits, stars, and the Solar System explained for curious learners. Online science quizzes build real sky literacy with clear questions and feedback—no jargon walls, just solid cosmic science you can practice anytime.
Quizzes
Biology Tests
Free biology tests on About Science cover cells, genetics, body systems, photosynthesis, and ecosystems. Practice with clear online science quizzes that strengthen real understanding of how life works—from molecules to food webs.
Quizzes
Chemistry Tests
Free chemistry tests on About Science explore atoms, the periodic table, reactions, acids and bases, and states of matter. Online science quizzes turn molecular ideas into clear practice you can use in everyday scientific literacy.
Quizzes
Earth Science Tests
Explore free Earth science tests on About Science: plate tectonics, weather, rocks, oceans, and climate systems. Online science quizzes build real planet literacy—how Earth’s spheres interact and why that knowledge matters.
Quizzes
Physics Tests
Practice free physics tests on About Science: forces, energy, electricity, waves, and gravity. Online science quizzes build clear conceptual understanding so the rules behind motion, light, and circuits actually stick.