Science Quizzes

Science quizzes with questions and answers about space and the human body, plus math series with rounds that get harder: multiplication tables, quick arithmetic, and money, age and area problems. Play for free.

🏁 98 quizzes and challenges ❓ 23,105 questions ✓ No sign-up

About Science Quizzes

The science quizzes in Ghada World bring science and math together in one place. Set off on "A Trip to Space" to learn about the planets, discover the "Secrets of the Human Body" and how its organs work, then test how fast you think in dozens of arithmetic quizzes.

Most of the math quizzes are series with rounds that get harder step by step, from Bronze to Silver, Gold and beyond, such as "Math Geniuses", "Quick Math Challenge", "Money Problems" and "The Unknown Number". Start at the level that suits you and move up round by round.

📚 Question topics

A Trip to SpaceSecrets of the Human BodyMultiplication Table HeroesQuick Math ChallengeMoney ProblemsPerimeter of shapes and area of rectanglesOrder of operationsPatterns for Smart Minds

🏁 Science Quizzes quizzes

🎲 Science Quizzes Challenge

🎲 Quick challenge ✓ No sign-up

A Trip to Space 🚀

⭐ 5 points per answer ✓ No sign-up

Secrets of the Human Body 🫀

⭐ 5 points per answer ✓ No sign-up

🥉 Bronze Round

Math Geniuses: Beginner

The First Spark 💫

⭐ 5 points per answer ✓ No sign-up

🥈 Silver Round

Math Geniuses: Beginner

Rabbit Leap 🐇

⭐ 5 points per answer ✓ No sign-up

🥉 Bronze Round

Math Geniuses: Intermediate

Brainstorm 🌪️

⭐ 5 points per answer ✓ No sign-up

🥈 Silver Round

Math Geniuses: Intermediate

Explorer's Trail 🛤️

⭐ 5 points per answer ✓ No sign-up

🥇 Gold Round

Math Geniuses: Intermediate

Falcon's Flight 🦅

⭐ 5 points per answer ✓ No sign-up

🏅 Platinum Round

Math Geniuses: Intermediate

Spark of Creativity 🎇

⭐ 5 points per answer ✓ No sign-up

🥉 Bronze Round

Math Geniuses: Pro

Blaze of Excitement 🔥

⭐ 5 points per answer ✓ No sign-up

🥈 Silver Round

Math Geniuses: Pro

Will of Steel 🛡️

⭐ 5 points per answer ✓ No sign-up

🥇 Gold Round

Math Geniuses: Pro

Super Brain 🧠

⭐ 5 points per answer ✓ No sign-up

All Science Quizzes quizzes (98) →

❓ Sample Science Quizzes questions and answers

Salt water boils at a slightly higher temperature than pure water.

Answer: True ✔
Dissolved salt raises the boiling point of water slightly, so salt water needs a little more than 100 degrees Celsius to boil.

Marie Curie is one of the most famous scientists to study radioactivity, and with her husband Pierre she discovered the elements polonium and radium.

Answer: True ✔
Marie Curie studied the radiation given off by some elements and coined the term "radioactivity," and with her husband Pierre she discovered polonium and radium in 1898.

Marie Curie was the first person to win the Nobel Prize twice. In which two fields did she win?

Answer: Physics and chemistry
Marie Curie won the Nobel Prize in Physics in 1903 with her husband Pierre and Henri Becquerel, then the Nobel Prize in Chemistry in 1911.

Which Muslim scientist combined medicine and chemistry and is credited with classifying substances as mineral, plant and animal?

Answer: Abu Bakr al-Razi
Abu Bakr al-Razi was a physician and chemist who lived in the 9th and 10th centuries CE; he is credited with classifying substances and describing lab tools and processes such as distillation.

Why are people warned against mixing household bleach with other cleaners, such as those containing ammonia?

Answer: Because the mixture releases dangerous toxic gases
Mixing bleach with ammonia or some acidic cleaners releases toxic gases that harm the lungs, so each cleaner should be used alone with good ventilation.

How does soap help remove greasy stains with water?

Answer: Its molecules have one end attracted to water and one end attracted to grease, so it surrounds the grease and carries it away with the water
Soap surrounds droplets of grease with its grease-loving ends, while its water-loving ends stay on the outside, so the water washes them away during rinsing.

All Science Quizzes questions and answers (23,105) →

💬 FAQ

What is the difference between a regular quiz and a series of rounds?

A series is a set of rounds on the same idea that get harder step by step, such as "Money Problems — Bronze Round", then Silver and Gold. When you finish a round the next one appears, and completing every round in the series earns you a badge.

How are points calculated in the science quizzes?

Each correct answer is worth 5 points, plus a completion bonus when you answer all five questions in the attempt.

Can I replay a round?

Yes, you can try as many times as you like, and each time the quiz picks five random questions from its bank.

Where can I find the science questions with their answers?

On the "Questions & Answers" page at /qa/science, which has the category's questions with the correct answers for review.