Science trivia refers to interesting and lesser-known facts related to various scientific fields. These facts can cover a wide range of topics, including physics, chemistry, biology, astronomy, geology, and more. Science trivia often highlights fascinating discoveries, historical milestones, peculiar phenomena, and intriguing scientific concepts. It can be a fun way to learn and share knowledge about the wonders of the natural world and our understanding of it. For example, did you know that the world’s oldest known fossil is about 3.5 billion years old? Or that the smallest bone in the human body is the stapes, located in the ear? These are just a couple of examples of science trivia.

Article overview

• Part 1: 20 science trivia questions & answers
• Part 2: Download science trivia questions & answers for free
• Part 3: Free online quiz creator – OnlineExamMaker

Part 1: 20 science trivia quiz questions & answers

1. Which gas is most abundant in Earth’s atmosphere?
a) Nitrogen
b) Oxygen
c) Carbon dioxide
d) Hydrogen
Answer: a) Nitrogen

2. What is the smallest unit of life?
a) Atom
b) Cell
c) Molecule
d) Organ
Answer: b) Cell

3. What causes the tides on Earth?
a) Gravitational pull of the Moon
b) Earth’s rotation
c) Sun’s gravitational pull
d) Ocean currents
Answer: a) Gravitational pull of the Moon

4. Which planet is known as the “Red Planet”?
a) Venus
b) Mars
c) Jupiter
d) Mercury
Answer: b) Mars

5. What is the chemical symbol for gold?
a) Au
b) Ag
c) Fe
d) Hg
Answer: a) Au

6. What is the process by which plants convert sunlight into energy?
a) Photosynthesis
b) Respiration
c) Transpiration
d) Germination
Answer: a) Photosynthesis

7. Which of the following is not a primary color of light?
a) Red
b) Blue
c) Yellow
d) Green
Answer: c) Yellow

8. What is the largest planet in our solar system?
a) Mars
b) Venus
c) Jupiter
d) Saturn
Answer: c) Jupiter

9. Which scientist is famous for the theory of relativity?
a) Albert Einstein
b) Isaac Newton
c) Marie Curie
d) Charles Darwin
Answer: a) Albert Einstein

10. What is the chemical formula for water?
a) H2O
b) CO2
c) NaCl
d) C6H12O6
Answer: a) H2O

Part 2: Download science trivia questions & answers for free

11. Which of the following is not a mammal?
a) Whale
b) Eagle
c) Bat
d) Dolphin
Answer: b) Eagle

12. What is the largest organ in the human body?
a) Liver
b) Heart
c) Brain
d) Skin
Answer: d) Skin

13. What is the closest star to Earth?
a) Alpha Centauri
b) Sirius
c) Proxima Centauri
d) Betelgeuse
Answer: c) Proxima Centauri

14. Which gas is responsible for the green color in plants?
a) Oxygen
b) Carbon dioxide
c) Chlorine
d) Nitrogen
Answer: b) Carbon dioxide

15. Which process involves a change from a solid directly to a gas?
a) Condensation
b) Sublimation
c) Evaporation
d) Freezing
Answer: b) Sublimation

16. What is the main component of Earth’s core?
a) Iron
b) Nickel
c) Copper
d) Aluminum
Answer: a) Iron

17. What is the largest species of shark?
a) Great white shark
b) Hammerhead shark
c) Tiger shark
d) Whale shark
Answer: d) Whale shark

18. Which vitamin is produced in the skin when exposed to sunlight?
a) Vitamin A
b) Vitamin C
c) Vitamin D
d) Vitamin E
Answer: c) Vitamin D

19. What is the chemical symbol for sodium?
a) S
b) N
c) Na
d) So
Answer: c) Na

20. What is the basic unit of electric charge?
a) Electron
b) Proton
c) Neutron
d) Photon
Answer: a) Electron

Part 3: Best online science quiz maker – OnlineExamMaker

OnlineExamMaker is a comprehensive online quiz software designed to streamline the process of creating, sharing, and managing quizzes for educational institutions, training centers, and corporate organizations. With its user-friendly interface and powerful features, OnlineExamMaker simplifies the assessment process, making it easier for instructors and administrators to evaluate learners’ knowledge and progress. The software automates the grading process, saving valuable time for instructors, and provides scores and detailed feedback to learners instantly.