Science Trivia Questions and Answers (60 Q&A by Field)

Science trivia is a goldmine for hosts because the category is huge, the answers feel earned, and almost every player has a corner they secretly know cold — the chemistry teacher in row two, the kid who memorized planet facts, the nurse who can name every bone. This guide gives you 60 science trivia questions and answers organized into six fields, mixed difficulty, ready to read straight from the page at your next bar trivia night, classroom warm-up, or family game night.

If you'd rather skip the prep entirely, our Weekly Trivia Subscription Service drops 4 fresh themed rounds into your inbox every Sunday — your first month is just $1. For more general questions covering history, pop culture, and beyond, see our general knowledge trivia questions page.

How to Use These Science Trivia Questions

Each round below has 10 questions. Run all six fields as a full 60-question science night, or pull one round to slot into a mixed-category event. Easy questions sit toward the top of each round, harder ones toward the bottom — a structure that keeps casual players engaged early and rewards true science nerds at the finish. Read the question once at full volume, then once more slowly. Give 15 seconds for the answer. If your venue is loud, write the question on a whiteboard or project it.

Biology Trivia (10 Q&A)

1. What is the powerhouse of the cell? The mitochondrion.
2. How many chambers does the human heart have? Four.
3. What pigment makes plants green? Chlorophyll.
4. What is the largest organ in the human body? The skin.
5. Which blood type is the universal donor? O negative.
6. What is the study of fungi called? Mycology.
7. How many bones are in the adult human body? 206.
8. What is the only mammal that lays eggs? The platypus (and echidna — accept either).
9. Which scientist proposed the theory of evolution by natural selection? Charles Darwin.
10. What is the longest cell in the human body? A neuron (specifically the sciatic nerve).

Chemistry Trivia (10 Q&A)

1. What is the chemical symbol for gold? Au.
2. What gas do plants absorb from the atmosphere? Carbon dioxide.
3. What is the most abundant gas in Earth's atmosphere? Nitrogen.
4. What is the pH of pure water? 7.
5. Which element has the atomic number 1? Hydrogen.
6. What is the hardest naturally occurring substance? Diamond.
7. Who created the modern periodic table? Dmitri Mendeleev.
8. What is the chemical formula for table salt? NaCl.
9. What metal is liquid at room temperature? Mercury.
10. What does pH stand for? Potential of hydrogen.

Physics Trivia (10 Q&A)

1. What is the speed of light in a vacuum? Approximately 299,792 km/s (186,000 miles per second).
2. Who developed the theory of general relativity? Albert Einstein.
3. What is the SI unit of force? The newton.
4. What particle has a negative charge? The electron.
5. What is the formula for kinetic energy? KE = 1/2 mv².
6. What law states that for every action there is an equal and opposite reaction? Newton's third law of motion.
7. What is absolute zero in Celsius? -273.15°C.
8. Which scientist is credited with discovering gravity after watching an apple fall? Sir Isaac Newton.
9. What is the unit of electrical resistance? The ohm.
10. What does E = mc² describe? The equivalence of mass and energy.

Astronomy Trivia (10 Q&A)

1. What is the largest planet in our solar system? Jupiter.
2. Which planet is known as the Red Planet? Mars.
3. What galaxy is Earth located in? The Milky Way.
4. How long does it take Earth to orbit the Sun? 365.25 days.
5. What is the closest star to Earth? The Sun.
6. What was the first man-made object to orbit Earth? Sputnik 1.
7. Who was the first human in space? Yuri Gagarin.
8. What is the name of the galaxy nearest to the Milky Way? Andromeda.
9. What planet has the most moons? Saturn.
10. What is a light-year a measure of? Distance.

Earth Science Trivia (10 Q&A)

1. What is the Earth's largest ocean? The Pacific Ocean.
2. What is the tallest mountain on Earth? Mount Everest.
3. What is the longest river in the world? The Nile (with the Amazon a contested second — accept either).
4. What scale measures earthquakes? The Richter scale (also accept moment magnitude).
5. What is the hottest layer of the Earth? The inner core.
6. What is the name of the supercontinent that existed 200 million years ago? Pangaea.
7. What gas makes up most of the air we breathe? Nitrogen.
8. What instrument measures wind speed? An anemometer.
9. What type of rock is formed from cooled lava? Igneous rock.
10. What is the rainiest place on Earth? Mawsynram, India.

Tech & Computer Science Trivia (10 Q&A)

1. Who founded Microsoft? Bill Gates and Paul Allen.
2. What does HTML stand for? HyperText Markup Language.
3. What year was the first iPhone released? 2007.
4. What does CPU stand for? Central Processing Unit.
5. Who is credited with inventing the World Wide Web? Tim Berners-Lee.
6. What does RAM stand for? Random Access Memory.
7. What programming language is named after a snake? Python.
8. What does USB stand for? Universal Serial Bus.
9. What does Wi-Fi technically stand for? Nothing — it's a brand name (often mistakenly cited as Wireless Fidelity).
10. What was the first programmable computer called? ENIAC.

Frequently Asked Questions

How many science trivia questions should I run for one night?

For a 90-minute event, plan 40-60 questions across 4-6 rounds. The 60 questions above split cleanly into six 10-question rounds.

What's the right difficulty mix for a casual crowd?

About 60% easy, 30% medium, 10% hard. Each round above is sequenced this way — top to bottom, easy to harder.

Can I use these in a classroom?

Yes. Teachers use these as bell-ringer warm-ups, end-of-unit reviews, and rainy-day activities. The category split maps to most middle and high school science curricula.

How do I keep teams from googling answers?

Set a phones-down rule, walk the room between questions, and tie a bonus point to the rule. Most casual teams comply once it's stated up front.

Do you have rounds in other categories?

Yes — see our general knowledge trivia questions hub for history, pop culture, geography, sports, and more.

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Writing 60 fresh questions every week is the part that burns hosts out. Our Weekly Trivia Subscription Service sends 4 themed rounds every Sunday so you have everything ready before doors open. New customers pay just $1 for the first month — try a Sunday drop, run it that week, and decide if you want to keep going. Hosts at bars, breweries, schools, and senior centers use it to skip the writing and focus on the room.