Science Trivia, Quizzes, Questions & Answers based on unbelievable facts

science trivia

In my previous posts, I shared technology facts and amazing astronomy facts. Today I’ve made some fun and mind-blowing science trivia and quizzes. These science trivia are not general science questions and are based on unbelievable science facts. I hope you’ll enjoy answering these science questions. These are for everyone who likes science and wants to learn more about it even Kids, Grade 5-12 students and adults can participate in it. All science quizzes have explanations and answers in the end!

This short video below has some really fun and cool science quizzes. Go ahead and enjoy watching and answering them!

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Science Trivia – Quick Questions and Quizzes


Which is the biggest known star in the universe?

Which is the smallest known particle in the universe?

How much time on average your individual blood cell takes to complete a cycle in your body?

How many bones babies have at the time of birth?

Which is the hottest planet in the solar system?

There is a painkiller in your saliva which is considered more powerful than morphine! What is its name?

How many hearts octopus has?

How much time light takes to reach earth from the sun?

How faster earth rotates around its own axis?

Which country has world's fastest supercomputer?

What happens when you put Caesium with water?

Which is the closest known black hole to earth?

What percentage of the mass of the solar system is the sun?

Which planet is less denser than water?

World's first famous web browser was?


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Science Trivia Answers and Explanations

  1. “VY Canis Majoris” is correct because it is the biggest star known today in our universe.
  2. “Quark” is the right answer because we know that Atom is no longer considered as the smallest particle. Quark is now considered as the smallest particle.
  3. “One minute” is correct but when we are doing some hard work e.g running our blood pressure increases and the time to complete a cycle reduces.
  4. “300” is correct. Yes, you’ve read it right, Babies have 300 bones at the time of birth. These bones fuse with age leaving behind 206 bones.
  5. “Venus” is the right answer. Although Mercury is the nearest planet to the sun it’s not the hottest planet in our solar system. In fact, Venus is the hottest planet in our solar system and it’s due to its atmosphere of gas clouds which don’t let the sunlight to leave its surface.
  6. “Opiorphin” is correct! It’s found in our saliva.
  7. “Three” is the right answer. Octopus has three hearts. One for the purpose of circulation. The other two for the purpose of pumping.
  8. “8 Minutes and 11 seconds” is correct. So does it means if the sun suddenly disappears we will realize it after eight minutes?
  9. “1000 miles per hour” is the right answer! Yes, the earth rotates that’s faster. But we can’t feel it because we are also moving with it.
  10. “China” is correct. Chinese have the world’s fastest supercomputer named Sunway TaihuLight. China introduced it in the response of US computer Tianhe-2. It outperformed Tianhe-2.
  11. “Explosion” is the right answer. Some metals explode when reacts with water. These are Sodium, Potassium, Rubidium, Caesium, and Francium. That’s the reason they are not easily available.
  12. “V616 Monocerotis” is correct. It is the closest black hole to the earth.
  13. “99%” is the right answer. 99% of the mass of the solar system is the sun.
  14. “Saturn” is the right answer. Saturn is less dense than water so it can float on water.
  15. “Mosaic” is correct. World’s first well-known web browser was Mosaic which released in 1993.

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