Science questions in a quiz are rarely about doing science. They are about whether a handful of facts stuck from school: what the symbol means, which organ does what, why the sky behaves as it does. These eighteen cover biology, chemistry and physics in roughly equal measure.
Easy science questions
- What is the chemical symbol for water? — H₂O
- How many bones are in the adult human body? — 206
- Which planet is closest to the Sun? — Mercury
- What gas do plants absorb from the air? — Carbon dioxide
- Which organ pumps blood around the body? — The heart
- What force keeps us on the ground? — Gravity
Medium science questions
- What is the chemical symbol for gold? — Au
- Which blood cells fight infection? — White blood cells
- What is the hardest naturally occurring substance? — Diamond
- At what temperature in Celsius does water boil at sea level? — 100°C
- Which scientist proposed the theory of general relativity? — Albert Einstein
- What is the powerhouse of the cell? — The mitochondrion
Hard science questions
- What is the most abundant element in the universe? — Hydrogen
- How many chromosomes are in a typical human cell? — 46
- What does DNA stand for? — Deoxyribonucleic acid
- Which particle carries a negative charge? — The electron
- What is the speed of light in a vacuum, to the nearest thousand km/s? — 300,000 km/s
- Which element has the atomic number 1? — Hydrogen
Chemistry symbols are the highest-value thing to memorise here — they recur in quizzes far more often than any single fact about physics.