Whether you're hosting a quiz night at your local bar or looking for the perfect icebreaker at a team event, science trivia questions are guaranteed to spark curiosity and friendly competition. From the mysteries of deep space to the chemistry happening inside your morning coffee, science offers an endless well of mind-blowing facts that make for unforgettable trivia rounds.

In this collection, you'll find over 80 science trivia questions organized by category — biology, chemistry, physics, space and astronomy, earth science, and technology and inventions. Each question comes with its answer, so you're ready to host a science-themed trivia night or just test your own knowledge.

Biology Trivia Questions

Biology is the science of life itself — from the tiniest cell to the largest whale. These biology science trivia questions cover anatomy, animals, plants, and the wild world of living things.

1. What is the largest organ in the human body? Answer: The skin

2. How many chambers does the human heart have? Answer: Four

3. What pigment gives plants their green color? Answer: Chlorophyll

4. What is the powerhouse of the cell? Answer: The mitochondria

5. How many bones are in the adult human body? Answer: 206

6. What type of animal is a Komodo dragon? Answer: A lizard (reptile)

7. What gas do plants absorb from the atmosphere during photosynthesis? Answer: Carbon dioxide

8. What is the smallest bone in the human body? Answer: The stapes (stirrup bone in the ear)

9. What part of the brain is responsible for balance and coordination? Answer: The cerebellum

10. What animal has the longest lifespan on Earth? Answer: The ocean quahog clam (can live over 500 years)

11. What is the process by which cells divide to produce two identical daughter cells? Answer: Mitosis

12. How many pairs of chromosomes do humans have? Answer: 23

13. What protein makes up human hair and nails? Answer: Keratin

14. Which blood type is known as the universal donor? Answer: O negative

15. What is the largest species of shark? Answer: The whale shark

Chemistry Trivia Questions

Chemistry explains the building blocks of everything around us. These chemistry science quiz questions will test your knowledge of elements, reactions, and molecular magic.

16. What is the chemical symbol for gold? Answer: Au (from the Latin "aurum")

17. What is the most abundant gas in Earth's atmosphere? Answer: Nitrogen (about 78%)

18. What pH level is considered neutral? Answer: 7

19. What element does the chemical symbol "Fe" represent? Answer: Iron (from the Latin "ferrum")

20. How many elements are on the modern periodic table? Answer: 118

21. What is the hardest natural substance on Earth? Answer: Diamond

22. What is the chemical formula for water? Answer: H₂O

23. Which noble gas is the most abundant in the atmosphere? Answer: Argon

24. What is the only metal that is liquid at room temperature? Answer: Mercury

25. What scientist is credited with creating the first periodic table? Answer: Dmitri Mendeleev

26. What type of bond involves the sharing of electron pairs between atoms? Answer: Covalent bond

27. What is dry ice made of? Answer: Solid carbon dioxide

28. What element has the atomic number 1? Answer: Hydrogen

29. What is the process of a liquid turning into a gas called? Answer: Evaporation (or vaporization)

30. Which element is known as the "King of Chemicals"? Answer: Sulfuric acid (H₂SO₄) — though technically a compound, it's widely known by this nickname in chemistry

Physics Trivia Questions

Physics is the study of how the universe works — forces, motion, energy, and everything in between. These physics science trivia questions range from everyday phenomena to mind-bending concepts.

31. What is the speed of light in a vacuum (approximately)? Answer: 186,000 miles per second (or about 300,000 kilometers per second)

32. What force keeps us on the ground? Answer: Gravity

33. What scientist formulated the three laws of motion? Answer: Sir Isaac Newton

34. What is the SI unit of force? Answer: Newton

35. What does E=mc² describe? Answer: The equivalence of mass and energy (Einstein's theory of special relativity)

36. What type of energy does a moving object possess? Answer: Kinetic energy

37. What is the term for the bending of light as it passes from one medium to another? Answer: Refraction

38. What is absolute zero in Celsius? Answer: −273.15°C

39. What subatomic particle has a positive charge? Answer: Proton

40. What physicist is known for his uncertainty principle? Answer: Werner Heisenberg

41. What is the phenomenon where light splits into its component colors called? Answer: Dispersion

42. How many states of matter are commonly recognized? Answer: Four (solid, liquid, gas, plasma)

43. What is the unit of electrical resistance? Answer: Ohm

44. What is the speed of sound at sea level (approximately)? Answer: 343 meters per second (about 767 mph)

45. What law states that for every action, there is an equal and opposite reaction? Answer: Newton's Third Law of Motion

Space and Astronomy Trivia Questions

The cosmos is full of jaw-dropping facts that are perfect for trivia games. These space science trivia questions will take your quiz night to another galaxy.

46. What is the largest planet in our solar system? Answer: Jupiter

47. How long does it take light from the Sun to reach Earth? Answer: About 8 minutes and 20 seconds

48. What is the closest star to Earth (other than the Sun)? Answer: Proxima Centauri

49. What planet is known as the Red Planet? Answer: Mars

50. How many moons does Saturn have (as of current count)? Answer: Over 140 confirmed moons

51. What is the name of the largest moon in the solar system? Answer: Ganymede (a moon of Jupiter)

52. What galaxy is Earth located in? Answer: The Milky Way

53. What is a light-year a measure of? Answer: Distance (not time) — about 5.88 trillion miles

54. What was the first human-made object to leave the solar system? Answer: Voyager 1

55. What planet has the shortest day in our solar system? Answer: Jupiter (about 10 hours)

56. What causes a solar eclipse? Answer: The Moon passing between the Sun and Earth

57. What is the hottest planet in our solar system? Answer: Venus (due to its thick greenhouse atmosphere)

58. Who was the first person to walk on the Moon? Answer: Neil Armstrong (July 20, 1969)

59. What is the name of NASA's most powerful space telescope launched in 2021? Answer: The James Webb Space Telescope

60. What phenomenon occurs when a massive star collapses under its own gravity? Answer: A black hole (or supernova, depending on the stage)

Earth Science Trivia Questions

Our own planet is full of fascinating science. From volcanoes to weather patterns, these earth science trivia questions and answers cover geology, meteorology, and oceanography.

61. What is the Earth's inner core primarily made of? Answer: Iron and nickel

62. What scale measures the intensity of earthquakes? Answer: The Richter scale (or moment magnitude scale)

63. What is the deepest point in the ocean? Answer: The Mariana Trench (Challenger Deep, about 36,000 feet)

64. What type of rock is formed from cooled magma or lava? Answer: Igneous rock

65. How old is the Earth (approximately)? Answer: About 4.5 billion years

66. What layer of the atmosphere protects us from ultraviolet radiation? Answer: The ozone layer (in the stratosphere)

67. What is the most abundant mineral in the Earth's crust? Answer: Feldspar

68. What causes tides on Earth? Answer: The gravitational pull of the Moon (and to a lesser extent, the Sun)

69. What is the Ring of Fire? Answer: A horseshoe-shaped zone of frequent earthquakes and volcanic eruptions around the Pacific Ocean

70. What percentage of Earth's surface is covered by water? Answer: About 71%

71. What is the driest place on Earth? Answer: The Atacama Desert in Chile (or McMurdo Dry Valleys in Antarctica)

72. What type of cloud is associated with thunderstorms? Answer: Cumulonimbus

73. What causes the Northern Lights (Aurora Borealis)? Answer: Charged particles from the Sun interacting with Earth's magnetic field and atmosphere

74. What is the tallest mountain on Earth measured from base to peak? Answer: Mauna Kea (when measured from its oceanic base)

75. How many tectonic plates make up Earth's lithosphere? Answer: About 15 major plates

Technology and Inventions Trivia Questions

Science and technology go hand in hand. These fun science trivia questions about inventions and tech breakthroughs are perfect for any quiz round — especially if you're using Quizado's game show platform to host the action.

76. Who invented the telephone? Answer: Alexander Graham Bell

77. What year was the World Wide Web invented? Answer: 1989 (by Tim Berners-Lee)

78. What does DNA stand for? Answer: Deoxyribonucleic acid

79. Who is known as the father of modern computer science? Answer: Alan Turing

80. What material is most commonly used in computer chips? Answer: Silicon

81. What was the first antibiotic discovered? Answer: Penicillin (discovered by Alexander Fleming in 1928)

82. What does "HTTP" stand for in a web address? Answer: HyperText Transfer Protocol

83. What technology does a barcode scanner use? Answer: Laser (optical) technology

84. Who invented the light bulb? Answer: Thomas Edison (though Joseph Swan developed a similar design independently)

85. What does GPS stand for? Answer: Global Positioning System

How to Use These Science Trivia Questions

These 85 science trivia questions work great in a variety of settings:

• Bar trivia nights: Build a full science round or mix these into your weekly trivia rotation. Science rounds tend to level the playing field since they pull from general knowledge rather than niche pop culture.
• Classroom reviews: Teachers love using trivia to make test prep feel less like studying and more like a game. Try running a Jeopardy-style quiz with these questions sorted by category.
• Team building events: Science trivia is a neutral, inclusive topic that works well across departments and age groups. Pair it with a Family Feud format for maximum team energy.
• House parties and game nights: Print these out or pull them up on your phone for an impromptu quiz challenge.

If you want to take your trivia night to the next level, Quizado lets you host fully interactive game shows — complete with buzzers, scoreboards, and customizable questions — right from your browser. No apps, no downloads, just pure trivia fun.

Looking for more trivia content? Check out our collections of fun trivia questions and answers, history trivia questions and answers, and pop culture trivia questions and answers.

Frequently Asked Questions

What are good science trivia questions for beginners?

Start with general knowledge questions like "What planet is known as the Red Planet?" (Mars) or "What is the chemical formula for water?" (H₂O). Biology and space categories tend to have the most approachable questions for beginners.

How many science trivia questions should I include in a quiz round?

For a typical trivia night round, 10 to 15 questions works best. It keeps the pace moving without overwhelming players. If you're running a full science-themed night, you can split questions across multiple rounds by category.

Can I use these science trivia questions for a school quiz?

Absolutely. These questions cover a wide range of difficulty levels and subjects, making them suitable for middle school through college-level review sessions. The categorized format makes it easy to match questions to your curriculum.

What's the best format for hosting science trivia?

A Jeopardy-style board works perfectly for science trivia since the questions are already organized by category. You can assign point values based on difficulty. Alternatively, a standard quiz format with answer sheets works well for larger groups.

How do I make science trivia more engaging?

Add visual rounds with images of planets, animals, or chemical structures. Use a digital platform like Quizado to add buzzers and live scoreboards, which keeps energy levels high. Bonus rounds with "true or false" or "name that scientist" themes also mix things up nicely.

Are these science trivia questions suitable for adults?

Yes — these questions range from accessible general knowledge to more challenging topics like quantum physics concepts and geological formations. They're designed for adults at trivia nights, team events, and social gatherings, though many also work well for older students.