These mind-blowing science trivia questions put your brain to the test!
They cover everything from outer space to the tiniest atoms. Whether you’re a self-proclaimed science nerd or just here for fun facts, this quiz is full of aha! moments, weird wonders, and “I had no idea!” surprises.
Ready to find out what you really know?! Let’s begin! Keep track with a friend and see how many you each know!
Fun Science Trivia For Kids
1. Is the sun a planet or a star?
2. What produces the majority of oxygen on Earth?
3. A scientist who studies rocks is called a what?
4. What two elements make up water?
5. Which gas makes up about 78% of the Earth’s atmosphere?
6. Which famous scientist developed the three laws of motion?
7. What is the hardest natural substance on Earth?
8. Which planet has the most moons?
9. What is the main gas found in the bubbles of soda?
10. Earth’s rotation is changing speed. Is it slowing down or speeding up?
11. How many moons does Mars have?
12. Does sound travel faster in water or air?
13. What do you call animals that eat only plants?
14. What’s the name of the scientist who proposed the theory of evolution by natural selection?
15. What is the largest planet in our solar system?
Cool Human Body Science Trivia

16. How many bones does an adult human body have?
17. How many bones is a baby born with?
18. What muscle is responsible for pumping blood throughout the body?
19. Do identical twins have the same fingerprints?
20. What is the most common eye color in the world?
21. How many chambers does the human heart have?
22. What is the strongest and longest bone in the human body?
23. How many times a day does the heart beat?
24. What other part of the body has a “print” as unique as a fingerprint?
25. What system in the body is responsible for hormones?
26. What is the largest organ of the human body?
27. What type of joint is the knee?
28. Which blood cells help fight infection?
29. How many chromosomes does a human cell have?
30. Which vitamin do we get from sunlight?
31. Which blood type is known as the universal donor?
32. Which human organ can regenerate itself?
33. True or false: Your sense of smell is strongest in the evening.
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Hard Science Trivia Questions

34. What metal is liquid at room temperature?
35. What type of energy does a moving object have?
36. Which planet could float in water because it’s so light?
37. What’s the boiling point of water on the Celsius scale?
38. Which part of the plant conducts photosynthesis?
39. What’s the name of the process where a solid turns directly into a gas?
40. What’s the name of the pigment that gives skin its color?
41. What’s the only letter that doesn’t appear in the periodic table?
42. What is the splitting of atomic nuclei called?
43. What part of the brain controls balance and coordination?
44. What’s the name of the molecule that carries genetic information?
45. What causes tides on Earth?
46. What part of the atom has no electric charge?
47. What’s the most abundant element in the universe?
48. How many elements are on the periodic table?
49. What are the three layers of the Earth?
50. What element is the most commonly used to create nuclear energy?
Science Trivia Team Names
Ready for your amazing trivia night? Don’t forget to pick a fun trivia team name!
1. The Mad Scientists Club
2. H2-Oh Snap!
3. Nerds At Work
4. The Big Bang Gang
5. The Lab Rats
6. Atomically Correct
7. Biology Nerd Herd
8. Einstein’s Entourage
9. We Got Proton Problems
10. No Shame in Our Bunsen Game
Related: Best Kids Trivia Quiz
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