Looking for science trivia questions and answers? This is the most complete collection online – 100+ questions covering biology, physics, chemistry, and earth science, from easy warm-ups to questions that will stump even science teachers.

Quick Science Trivia Questions and Answers

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Easy Science Trivia Questions

Q1
What is the chemical symbol for water?
H₂O
Q2
What planet is known as the “Red Planet”?
Mars
Q3
How many bones are in an adult human body?
206
Q4
What gas do plants absorb from the atmosphere during photosynthesis?
Carbon dioxide (CO₂)
Q5
What is the fastest land animal?
Cheetah
Q6
What is the largest planet in our solar system?
Jupiter
Q7
What organ pumps blood through the human body?
Heart
Q8
What gas do we breathe in to survive?
Oxygen
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Medium Science Trivia Questions

Q9
What is the largest organ in the human body?
The skin
Q10
What is the speed of light in a vacuum?
Approximately 299,792,458 meters per second
Q11
Who developed the theory of evolution by natural selection?
Charles Darwin
Q12
What is the pH of pure water?
7 (neutral)
Q13
What element has the chemical symbol “Au”?
Gold
Q14
Which part of the brain controls balance and coordination?
The cerebellum
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Hard Science Trivia Questions

Q15
What is the Heisenberg Uncertainty Principle?
You cannot simultaneously know both the exact position and momentum of a particle
Q16
What is the deepest oceanic trench?
The Mariana Trench
Q17
Who discovered penicillin?
Alexander Fleming
Q18
What is a supernova?
A powerful stellar explosion that occurs at the end of a massive star’s life
Q19
What does CRISPR stand for?
Clustered Regularly Interspaced Short Palindromic Repeats
Q20
What is the half‑life of Carbon‑14?
Approximately 5,730 years
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Science Quiz Bee Questions (Quiz Bowl Style)

Q21
What is the most abundant compound in most living things?
Water
Q22
What force keeps planets in orbit around the sun?
Gravity
Q23
What element is most abundant in the Earth’s atmosphere?
Nitrogen
Q24
What type of cells in the human body transmit nerve impulses?
Neurons
Q25
Which organelle is known as the powerhouse of the cell?
Mitochondria
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Biology Trivia Questions and Answers

Human Body Science Questions

Q26
How many ribs does a human have?
24 (12 pairs)
Q27
What is the largest muscle in the human body?
Gluteus maximus
Q28
What percentage of the human body is water?
Approximately 60%
Q29
How many taste buds does the average human have?
About 10,000
Q30
What is the smallest muscle in the human body?
Stapedius (in the ear)
Q31
How many teeth does an adult human have?
32
Q32
What is the longest nerve in the human body?
Sciatic nerve
Q33
How many chromosomes do humans have?
46 (23 pairs)
Q34
What is the average human body temperature?
98.6°F (37°C)
Q35
How many vertebrae are in the human spine?
33
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Animal Kingdom Science Questions

Q36
How many hearts does an octopus have?
Three
Q37
What is the only mammal capable of true flight?
Bats
Q38
How many stomachs does a cow have?
Four
Q39
What is the fastest bird in the world?
Peregrine falcon
Q40
How many legs does a lobster have?
Ten
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Plant Life Science Questions

Q41
What is the largest flower in the world?
Rafflesia arnoldii
Q42
How many species of plants are there on Earth?
Approximately 400,000
Q43
What is the tallest tree species in the world?
Coast redwood
Q44
How long can a bristlecone pine tree live?
Over 4,000 years
Q45
What is the fastest‑growing plant in the world?
Bamboo
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Chemistry Trivia Questions and Answers

Periodic Table Questions

Q46
How many elements are currently on the periodic table?
118
Q47
What is the most reactive metal?
Francium
Q48
What element has the atomic number 1?
Hydrogen
Q49
What is the chemical symbol for tungsten?
W
Q50
What element is known as quicksilver?
Mercury
Q51
What is the chemical symbol for potassium?
K
Q52
What element has the highest melting point?
Tungsten
Q53
What is the chemical symbol for sodium?
Na
Q54
What element is essential for making steel?
Iron
Q55
What is the chemical symbol for silver?
Ag
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Chemical Reactions and Compounds

Q56
What is the chemical formula for glucose?
C6H12O6
Q57
What type of reaction releases energy?
Exothermic
Q58
What is the chemical formula for hydrogen peroxide?
H2O2
Q59
What type of reaction absorbs energy?
Endothermic
Q60
What is the chemical formula for baking soda?
NaHCO3
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Physics Trivia Questions and Answers

Forces and Motion

Q61
What is Newton’s second law of motion?
F = ma (Force equals mass times acceleration)
Q62
What is Newton’s third law of motion?
For every action, there is an equal and opposite reaction
Q63
What is the unit of power in the SI system?
Watt (W)
Q64
What is the unit of energy in the SI system?
Joule (J)
Q65
What is the acceleration due to gravity on Earth?
9.8 m/s²
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Space and Astronomy

Q66
How long does it take for light from the Sun to reach Earth?
About 8 minutes and 20 seconds
Q67
What is the largest moon of Jupiter?
Ganymede
Q68
How many Earth days is one year on Mars?
About 687 Earth days
Q69
What is the largest moon of Saturn?
Titan
Q70
How many moons does Earth have?
One
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Earth Science Trivia Questions and Answers

Geology and Earth Structure

Q71
What are the four layers of the Earth?
Crust, mantle, outer core, inner core
Q72
What is the thickest layer of the Earth?
Mantle
Q73
What is the temperature of Earth’s core?
About 5,000-6,000°C
Q74
What type of rock is formed by heat and pressure?
Metamorphic rock
Q75
What is the study of volcanoes called?
Volcanology
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Weather and Climate

Q76
What is the study of clouds called?
Nephology
Q77
What type of cloud produces thunderstorms?
Cumulonimbus
Q78
What is the most dangerous type of weather?
Lightning/thunderstorms
Q79
What is the eye of a hurricane?
The calm center of the storm
Q80
What is the difference between weather and climate?
Weather is short-term; climate is long-term patterns
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Why Use TriviaMaker Instead of Paper or Slides?

You found the questions. Now what?

Most people copy these questions into a Google Doc, PowerPoint, or just read them off their phone. That works — but it’s slow, boring, and impossible to score fairly. Here’s the difference:

❌ The Old Way (Paper / Slides)

  • Manually type questions into PowerPoint
  • Read them out loud, one by one
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  • No engagement — people zone out
  • Takes 30-60 min just to set up

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How to Use These Science Trivia Questions

These science quiz questions work for almost any setting — but how you deliver them makes all the difference.

For teachers: Instead of reading questions off a worksheet, use TriviaMaker to turn any section of this article into a live classroom quiz. Students answer on their phones, scores update in real time, and you get instant data on who understood the material. Works for end-of-unit review, substitute teacher days, or extra credit.

For event hosts and team-building: Running a team-building trivia night? Science themes work great because everyone has some knowledge — but nobody knows everything. TriviaMaker’s Crowd Mode handles groups of 5 to 500+, with automatic scoring so you can focus on hosting, not spreadsheets.

For remote teams: These questions work perfectly for online trivia games on Zoom. Share your screen, and participants play on their own devices. No screen-sharing lag, no “can everyone see my slides?” issues.

For families: Pick the Easy section (Q1–Q8) for kids, mix in Medium questions for teens, and throw in the Hard section to stump the adults. It’s the easiest way to make science fun at home — way better than reading questions off your phone.

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Frequently Asked Questions

What are the best science trivia questions for all ages?

The best science trivia questions match your audience’s level. Use easy questions (Q1–Q8 above) for kids and casual players, medium questions for high school and adults, and hard science questions for science enthusiasts or quiz bee competitors. When in doubt, mix all three – a good science quiz has something that stumps everyone.

What are science quiz bee questions?

Science quiz bee questions are fast-paced, precise, and typically cover a broad range of topics – biology, chemistry, physics, and earth science. They reward quick recall over guessing. The hard science trivia section of this article (Q15–Q20) is the closest in style to a typical science quiz bee format.

How many science trivia questions should I use per round?

10-15 questions per round is the standard for most trivia nights and classroom sessions. For a full science quiz, 3-4 rounds covering different categories (biology, physics, chemistry, earth science) keeps things varied without losing energy.

How do I make a science quiz online?

The quickest way is to use an online quiz maker that supports multiple game modes. Our step-by-step guide on how to create a quiz walks you through the whole process – from adding questions to hosting a live game.

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