100+ Science Trivia Questions, Answers & How to Create Your Own Quiz

Remember that moment in science class when everything clicked? When the periodic table transformed from cryptic symbols to a map of the universe, or when Newton's laws suddenly explained why you fall off your skateboard? Science isn't just memorizing formulas—it's the incredible story of everything around us, waiting to be discovered.

But here's the real question: How much of that wonder stuck with you?

Welcome to the ultimate test of your scientific mettle. We've compiled a massive collection of 100+ science trivia questions and answers spanning biology, chemistry, physics, astronomy, and bizarre "wait, really?" facts. Answer them solo, challenge your friends over group chat, or use them to create the ultimate trivia night.

And if you're inspired to become a quizmaster yourself, we'll show you exactly how to build a stunning, interactive quiz with SurveyMars in just minutes. Let's dive in.

Section 1: The Fundamentals (Questions 1-20)

Warm up those neurons with some classic science staples.

1.  Q: What is the hardest natural substance on Earth?

    A: Diamond.

2.  Q: What is the chemical symbol for gold?

    A: Au.

3.  Q: How many bones are in the adult human body?

    A: 206.

4.  Q: What planet is known as the "Red Planet"?

    A: Mars.

5.  Q: What is the process by which plants make their own food?

    A: Photosynthesis.

6.  Q: What force pulls objects toward the center of the Earth?

    A: Gravity.

7.  Q: What is the fastest land animal?

    A: Cheetah.

8.  Q: What gas do humans primarily breathe in?

    A: Oxygen (O₂).

9.  Q: What is the largest organ in the human body?

    A: Skin.

10. Q: Which planet has the most moons?

    A: Saturn (with 146 confirmed moons as of 2024!).

11. Q: What is the smallest unit of life?

    A: The cell.

12. Q: What is H₂O more commonly known as?

    A: Water.

13. Q: What galaxy is our Solar System a part of?

    A: The Milky Way Galaxy.

14. Q: What type of animal is a dolphin: fish or mammal?

    A: Mammal.

15. Q: What is the center of an atom called?

    A: The nucleus.

16. Q: True or False: Sound travels faster through water than air.

    A: True.

17. Q: What planet spins on its side?

    A: Uranus.

18. Q: What is the human body's normal temperature in Celsius?

    A: Approximately 37°C.

19. Q: What gas do plants absorb from the atmosphere?

    A: Carbon Dioxide (CO₂).

20. Q: What is the study of fossils called?

    A: Paleontology.

Section 2: Biology Bonanza (Questions 21-40)

Dive into the wonderful world of life sciences.

21. Q: What is the powerhouse of the cell?

    A: The mitochondrion.

22. Q: DNA is shaped like a twisted ladder. What is this shape called?

    A: A double helix.

23. Q: Which human gland is known as the "master gland"?

    A: The pituitary gland.

24. Q: What is the scientific name for the fear of long words?

    A: Hippopotomonstrosesquippedaliophobia (a bonus trivia in itself!).

25. Q: How many chambers does the human heart have?

    A: Four.

26. Q: What is the largest bone in the human body?

    A: The femur (thigh bone).

27. Q: What protein gives skin and hair its pigment?

    A: Melanin.

28. Q: True or False: Octopuses have three hearts.

    A: True. (Two pump blood to the gills, one pumps it to the rest of the body).

29. Q: What is the process of cell division called?

    A: Mitosis.

30. Q: Which blood type is known as the universal donor?

    A: O-negative.

31. Q: What is the strongest muscle in the human body relative to its size?

    A: The masseter (jaw muscle).

32. Q: What part of the brain is responsible for balance and coordination?

    A: The cerebellum.

33. Q: What is the study of animals called?

    A: Zoology.

34. Q: How many pairs of chromosomes does a typical human have?

    A: 23 pairs (46 total).

35. Q: Bees help flowers by spreading what?

    A: Pollen (a process called pollination).

36. Q: What is the only mammal capable of true flight?

    A: The bat.

37. Q: What is the largest living structure on Earth, visible from space?

    A: The Great Barrier Reef.

38. Q: What human organ regenerates tissue the fastest?

    A: The liver.

39. Q: What is the primary component of plant cell walls?

    A: Cellulose.

40. Q: What do you call an animal that eats both plants and meat?

    A: An omnivore.

Section 3: Chemistry Conundrums (Questions 41-60)

React with these questions on elements and compounds.

41. Q: What element is denoted by the symbol 'K'?

    A: Potassium.

42. Q: What is the most abundant gas in Earth's atmosphere?

    A: Nitrogen (about 78%).

43. Q: What scale measures the acidity or alkalinity of a substance?

    A: The pH scale.

44. Q: What do you call a substance that cannot be broken down into simpler substances by chemical means?

    A: An element.

45. Q: What is the lightest element?

    A: Hydrogen.

46. Q: What is table salt chemically known as?

    A: Sodium chloride (NaCl).

47. Q: What metal is liquid at room temperature?

    A: Mercury.

48. Q: What gas gives soda its fizz?

    A: Carbon dioxide (CO₂).

49. Q: What is the chemical symbol for lead?

    A: Pb.

50. Q: Rust is formed by the reaction of iron and what gas?

    A: Oxygen (forming iron oxide).

51. Q: What is the main element in coal and diamonds?

    A: Carbon.

52. Q: What is the only letter that does not appear on the periodic table?

    A: The letter "J."

53. Q: What is the common name for Nitrous Oxide (N₂O)?

    A: Laughing gas.

54. Q: What is the second most abundant element in the Earth's crust?

    A: Silicon.

55. Q: What is the chemical formula for ozone?

    A: O₃.

56. Q: What is the process of a liquid turning into a gas called?

    A: Evaporation.

57. Q: What acid is found in your stomach?

    A: Hydrochloric acid.

58. Q: TNT stands for what chemical compound?

    A: Trinitrotoluene.

59. Q: What noble gas is used in brightly lit signs?

    A: Neon.

60. Q: What is the term for atoms of the same element with different numbers of neutrons?

    A: Isotopes.

Section 4: Physics & Forces (Questions 61-80)

Put your knowledge of energy and motion to the test.

61. Q: What is the unit of electrical resistance?

    A: The Ohm (Ω).

62. Q: What is the speed of light in a vacuum (approximately)?

    A: 299,792,458 meters per second (or about 186,282 miles per second).

63. Q: For every action, there is an equal and opposite reaction. This is which of Newton's Laws?

    A: Newton's Third Law of Motion.

64. Q: What type of energy is stored in a stretched spring?

    A: Elastic potential energy.

65. Q: What particle has a positive charge and resides in an atom's nucleus?

    A: A proton.

66. Q: What is the tendency of an object to resist changes in its state of motion?

    A: Inertia (Newton's First Law).

67. Q: What is the Earth's primary source of energy?

    A: The Sun.

68. Q: What does a prism do to white light?

    A: Separates (or refracts) it into the colors of the spectrum.

69. Q: What is the unit of force?

    A: The Newton (N).

70. Q: What kind of energy does a rolling ball have?

    A: Kinetic energy.

71. Q: What is the name for a subatomic particle with no electrical charge?

    A: A neutron.

72. Q: True or False: In a vacuum, a feather and a hammer fall at the same rate.

    A: True (as demonstrated on the Moon by Apollo 15 astronaut David Scott).

73. Q: What is the phenomenon where light bends as it passes through a medium?

    A: Refraction.

74. Q: What law states that energy cannot be created or destroyed, only transformed?

    A: The Law of Conservation of Energy.

75. Q: What is the unit of power?

    A: The Watt (W).

76. Q: What is the opposite of matter?

    A: Antimatter.

77. Q: What do you call the change in frequency of a wave due to motion?

    A: The Doppler Effect.

78. Q: What state of matter has a definite volume but no definite shape?

    A: Liquid.

79. Q: What is the name of the theoretical boundary around a black hole from which nothing can escape?

    A: The event horizon.

80. Q: What fundamental force holds the nucleus of an atom together?

    A: The strong nuclear force.

Section 5: Earth & Space Explorations (Questions 81-100)

Reach for the stars and dig into geology.

81. Q: What is the name of our closest star (besides the Sun)?

    A: Proxima Centauri.

82. Q: What phenomenon is caused by the Moon passing between the Earth and the Sun?

    A: A solar eclipse.

83. Q: What are the three main types of rock?

    A: Igneous, sedimentary, and metamorphic.

84. Q: What was the name of the supercontinent that existed 300 million years ago?

    A: Pangaea.

85. Q: What is the hottest planet in our solar system?

    A: Venus (due to its thick, greenhouse-gas-rich atmosphere).

86. Q: What is the study of earthquakes called?

    A: Seismology.

87. Q: What is the most abundant metal in the Earth's crust?

    A: Aluminum.

88. Q: What causes the tides on Earth?

    A: The gravitational pull of the Moon (and, to a lesser extent, the Sun).

89. Q: Which planet has rings made mostly of ice particles?

    A: Saturn.

90. Q: What layer of the atmosphere contains the ozone layer?

    A: The stratosphere.

91. Q: What is the name of a violently rotating column of air?

    A: A tornado.

92. Q: Olympus Mons, the largest volcano in our solar system, is found on which planet?

    A: Mars.

93. Q: What is the imaginary line that runs around the center of the Earth?

    A: The equator.

94. Q: Which gas protects Earth from harmful ultraviolet solar radiation?

    A: Ozone (O₃).

95. Q: What celestial body did NASA's Perseverance rover land on in 2021?

    A: Mars.

96. Q: What is the name for molten rock beneath the Earth's surface?

    A: Magma (it's called lava when it reaches the surface).

97. Q: What type of cloud is tall, dense, and associated with thunderstorms?

    A: Cumulonimbus.

98. Q: True or False: A cloud can weigh over a million pounds.

    A: True! The average cumulus cloud weighs about 1.1 million pounds.

99. Q: What percent of the Earth's surface is covered by water?

    A: Approximately 71%.

100. Q: What is the name of the first artificial satellite launched into space?

    A: Sputnik 1 (launched by the USSR in 1957).

BONUS ROUND: The "Wait, Really?" Oddities (Questions 101-110)

Because science is wonderfully weird.

101. Q: What percent of the human brain is water?

     A: About 73%.

102. Q: How many taste buds does the average human have?

     A: About 8,000 to 10,000.

103. Q: A single bolt of lightning contains enough energy to toast how many slices of bread?

     A: Approximately 100,000 slices. (Talk about a powerful toaster!).

104. Q: What is the only fruit that bears its seeds on the outside?

     A: The strawberry.

105. Q: What mammal has the shortest gestation period?

     A: The Virginia opossum (about 12-13 days).

106. Q: What color is an astronaut's urine when they first enter space?

     A: Bright red (due to the stress of launch! It normalizes later).

107. Q: What animal has the largest eyes of any land mammal?

     A: The moose.

108. Q: What is the only metal that is not silver in color?

     A: Gold (and copper).

109. Q: How many times can a hummingbird flap its wings per second?

     A: Up to 80 times per second.

110. Q: What is the fear of the number 13 called?

     A: Triskaidekaphobia.

From Trivia Player to Quiz Master: Create Your Own Science Quiz with SurveyMars

Inspired? Feeling that itch to challenge your friends, students, or social media followers? With SurveyMars, you can transform these questions—or any of your own—into a professional, engaging, and fun quiz in just a few clicks.

Why Use SurveyMars for Your Quizzes?

• Drag-and-Drop Simplicity: No coding or design skills needed.
• Engaging Templates: Start with beautiful, pre-built quiz formats.
• Instant Scoring & Feedback: Provide explanations and results immediately.
• Share Anywhere: Embed on your website, blog, or share via a simple link.
• Analyze Results: Get insights into how your participants performed.

How to Create Your Science Quiz in 5 Easy Steps:

Step 1: Sign Up & Choose "Quiz"

Go to SurveyMars and create a free account. Click "+ New Survey" and select the "Online Quiz" format.

Step 2: Pick a Template or Start Fresh

Browse the template gallery for an "Educational" or "Trivia" theme, or start with a blank slate for full creative control.

Step 3: Add Your Questions & Answers

This is the fun part! Use the question bank above as your starting point.

• For each question, you can set the question type (multiple choice, true/false).
• Input your answer choices and mark the correct one.
• Use the "Set Answer Explanation" field to drop a cool science fact after the answer is revealed (e.g., "Saturn has 146 moons because its massive gravity captures passing objects.").
• Use the "Randomize Questions" feature to display different questions for each respondent, preventing bias.

Step 4: Configure Settings & Share

• Set up instant scoring to show a final percentage and rank.
• Choose whether to show answers at the end.
• Hit "Share" and get your unique quiz link. Share it anywhere—social media, email, or embed it directly in your blog post, just like this template!

Your Next Great Idea Starts with a Question

Whether you aced this trivia challenge or learned something new, the goal is the same: to stay curious. The universe is full of incredible questions waiting for answers. Now, you have the tools not just to find them, but to create engaging experiences that spread that curiosity to others.

What will you quiz about next? The periodic table? The human skeleton? The mysteries of deep space? With SurveyMars, the only limit is your imagination. 

Ready to build? Create your FREE science quiz on SurveyMars now!