65+ Science Quiz Questions and Answers For Kids

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Welcome to the ultimate Science Quiz for Kids, packed with 50 exciting science questions and answers for kids.

Our fun-filled kids science quiz is just the thing to stretch those brain muscles and explore the fantastic world of science!

Our science trivia for kids is divided into 7 interactive rounds.

The first round contains easy science questions for kids. This sets the foundation for your science knowledge and primes you for the upcoming rounds.

In the second round, we’ll test your understanding with multiple-choice questions. Round three is a true-or-false round.

Finally, if you thought these scientific questions for kids were too easy, round 4 and 5 will take the level up a bit.

Whether you’re preparing for a school project, looking to challenge yourself, or just keen to learn more about the wonders of science, our Science Quiz for Kids is the perfect way to make learning fun!

Round 1: Easy Science Trivia Questions for Kids

1. What is the name of the force that causes an object to fall if you drop it?
2. Which organ pumps blood around the body?
3. What can you add to a bottle of diet coke to make it erupt?
4. What is the biggest planet in the solar system?
5. Which bones protect the lungs and heart?
6. What are the two poles on a magnet?
7. What piece of lab equipment might you use to look at bacteria?
8. What is the term for an animal that only eats plants?
9. Which gas is used to make balloons float?
10. What are the double teeth at the back of the mouth known as?

Round 1: Easy Science Trivia Questions and Answers for Kids

1. What is the name of the force that causes an object to fall if you drop it? Gravity
2. Which organ pumps blood around the body? The heart
3. What can you add to a bottle of diet coke to make it erupt? Mentos (mints)
4. What is the biggest planet in the solar system? Jupiter
5. Which bones protect the lungs and heart? Ribs
6. What are the two poles on a magnet? North and South
7. What piece of lab equipment might you use to look at bacteria? Microscope
8. What is the term for an animal that only eats plants? Herbivore
9. Which gas is used to make balloons float? Helium
10. What are the double teeth at the back of the mouth known as? Molars

Round 2: Science Multiple Choice Questions for Kids

In this round, you will find some fun multiple choice questions for kids. They all have 4 possible answers. You need to pick the right one. Only one of them is correct.

1. What are the three states of matter?
   1. Solids, Plasma and Foam
   2. Stone, Water and Air
   3. Solids, Liquids and Gas
   4. Stone, Liquids and Foam
2. Charles Darwin discovered the Theory of ….
   1. Magnetism
   2. Climate change
   3. Evolution
   4. Continental drift
3. You can use the sentence ‘My Very Educated Mother Just Served Us Nachos’ to remember what?
   1. The order of the planets
   2. The parts of a plant
   3. The continents on Earth
   4. The organs in the human body
4. Pollination helps a plant do what?
   1. Photosynthesise 
   2. Reproduce
   3. Attract bees
   4. Grow
5. Which of the following animals is a primate?
   1. Whale
   2. Scorpion
   3. Eagle
   4. Gorilla
6. When a lightbulb turns on, electrical energy is turned into ….
   1. Light energy and kinetic energy
   2. Light energy and heat energy
   3. Heat energy and kinetic energy
   4. Sound energy and gravitational potential energy
7. Approximately how many humans are there on Earth?
   1. 800 thousand
   2. 8 Million
   3. 8 Billion
   4. 18 Billion
8. Which force keeps an aeroplane from falling out of the air?
   1. Lift
   2. Flight
   3. Gravity 
   4. Drag
9. If you put a glass over a lit candle, what would happen to the flame?
   1. It would get brighter
   2. It would go out
   3. It would set the glass on fire
   4. Nothing would happen
10. Which of these mammals is a marsupial?
    1. Human
    2. Dolphin
    3. Hedgehog
    4. Kangaroo 

Round 2: Science Multiple Choice Questions and Answers for Kids

1. What are the three states of matter? C. Solids, Liquids and Gas
2. Charles Darwin discovered the Theory of …. C. evolution 
3. You can use the sentence ‘My Very Educated Mother Just Served Us Nachos’ to remember what? A. The order of the planets
4. Pollination helps a plant do what? B. Reproduce
5. Which of the following animals is a primate? D. Gorilla
6. When a lightbulb turns on, electrical energy is turned into …. b. Light energy and heat energy
7. Approximately how many humans are there on Earth? C. 8 Billion
8. Which force keeps an aeroplane from falling out of the air? A. Lift
9. If you put a glass over a lit candle, what would happen to the flame? B. it would go out
10. Which of these mammals is a marsupial? D. Kangaroo 

Round 3: Science Quiz for Kids – True or False

This round consists of easy questions for kids in the form of true or false. Basically, you will find 10 ‘facts’ below and just need to indicate whether you think they are true or false.

1. Carbon dioxide, oxygen, nitrogen and methane are all greenhouse gases.
2. If you put the same poles of two magnets next to one another they will pull together.
3. Sugar will dissolve faster in a hot cup of tea than a glass of water straight from the fridge.
4. The Earth is not perfectly spherical. It’s slightly squashed so it bulges at the equator.
5. Though small, atoms are extremely dense.
6. Saturn’s rings are made of broken up pieces of comets, asteroids and moons, as well as billions of small chunks of ice and dust.
7. Palaeontologists are scientists that study mushrooms.
8. Vaccines work by injecting you with a very small number of strong viruses so your body can practise fighting the disease.
9. The friendly dogs that humans keep as pets were never actually wild animals. Humans purposely bred them from wolves.
10. About 5 thousand Earths could fit inside the sun.

Round 3: Science Quiz Answers for Kids – True or False

1. Carbon dioxide, oxygen, nitrogen and methane are all greenhouse gases. False.
2. If you put the same poles of two magnets next to one another they will pull together. False, they will push each other apart.
3. Sugar will dissolve faster in a hot cup of tea than a glass of water straight from the fridge. True.
4. The Earth is not perfectly spherical. It’s slightly squashed so it bulges at the equator. True.
5. Though small, atoms are extremely dense. False, atoms are actually mostly empty.
6. Saturn’s rings are made of broken up pieces of comets, asteroids and moons, as well as billions of small chunks of ice and dust. True.
7. Palaeontologists are scientists that study mushrooms. False, they study fossils.
8. Vaccines work by injecting you with a very small number of strong viruses so your body can practise fighting the disease. False, vaccines only contain dead or weak viruses.
9. The friendly dogs that humans keep as pets were never actually wild animals. Humans purposely bred them from wolves. True.
10. About 5 thousand Earths could fit inside the sun. False, in fact, about 1 million Earths could fit into the sun.

Round 4: Medium Science Trivia Questions for Kids

1. A person will travel faster when ice skating than skidding on carpet because there is less of which force acting on them?
2. What is the name for the plates of land which make up the Earth’s crust, which sometimes rub against each other to cause earthquakes?
3. Which class of the animal kingdom do frogs belong to?
4. How many natural satellites does the Earth have?
5. What is the name for the dense particle at the centre of an atom?
6. On what continent would you find most marsupial mammals?
7. Wind turbines convert what kind of energy into electrical energy?
8. What does A/C stand for when referring to A/C power?
9. In which body part would you find the phalanges?
10. What is the name for a scientist who specialises in studying bacteria?
11. What is the largest internal organ in the human body?

Round 4: Medium Science Trivia Questions and Answers for Kids

1. A person will travel faster when ice skating than skidding on carpet because there is less of which force acting on them? Friction
2. What is the name for the plates of land which make up the Earth’s crust, which sometimes rub against each other to cause earthquakes? Tectonic Plates
3. Which class of the animal kingdom do frogs belong to? Amphibians
4. How many natural satellites does the Earth have? 1
5. What is the name for the dense particle at the centre of an atom? Nucleus
6. On what continent would you find most marsupial mammals? Australia
7. Wind turbines convert what kind of energy into electrical energy? Kinetic energy
8. What does A/C stand for when referring to A/C power? Alternating Current
9. In which body part would you find the phalanges? Hands
10. What is the name for a scientist who specialises in studying bacteria? A Microbiologist
11. What is the largest internal organ in the human body? Liver

Round 5: Hard Science Trivia Questions for Kids

Looking for a science quiz for 12 year olds? This round is a bit more difficult so it’s perfect for kids who know a bit more about science.

1. What is the most abundant gas in the Earth’s atmosphere?
2. Which body part produces insulin?
3. During that age of the dinosaurs, all of the Earth’s continents were joined together. What was the name of this supercontinent?
4. Which hormone is often known as the ‘bonding hormone?’
5. What is the scientific name for a water bear?
6. What kind of blood cells are responsible for creating scabs if you cut your skin?  
7. Other than the sun, what is the closest star to Earth?
8. What is often said to be ‘the powerhouse of the cell?’
9. What kind of electromagnetic waves have the longest wavelength?
10. Which part of the brain is responsible for controlling body temperature and appetite?

Round 5: Hard Science Trivia Questions and Answers for Kids

1. What is the most abundant gas in the Earth’s atmosphere? Nitrogen
2. Which body part produces insulin? The Pancreas
3. During that age of the dinosaurs, all of the Earth’s continents were joined together. What was the name of this supercontinent? Pangaea
4. Which hormone is often known as the ‘bonding hormone?’ Oxytocin
5. What is the scientific name for a water bear? Tardigrade
6. What kind of blood cells are responsible for creating scabs if you cut your skin? Platelets 
7. Other than the sun, what is the closest star to Earth? Proxima Centauri 
8. What is often said to be ‘the powerhouse of the cell?’ The mitochondria 
9. What kind of electromagnetic waves have the longest wavelength? Radio waves
10. Which part of the brain is responsible for controlling body temperature and appetite? Hippocampus

Round 6: Science and nature questions for Kids

1. How many wings does a mosquito have?
2. On which continent do giraffes live?
3. Fahrenheit is a temperature scale used in North America. Which scale starting with the letter C, is used in Europe?
4. Cardiology is the study of which organ?
5. True or False – Carnivorous plants exist.
6. What is a male rabbit called?
7. What is ‘Cumulus’ the scientific name for?
8. Do ducks lay eggs?
9. What are the two holes in your nose called?
10. Which colour is Chlorophyll known for?

Round 6: Science and nature questions and answers for Kids

1. How many wings does a mosquito have? 2
2. On which continent do giraffes live? Africa
3. Fahrenheit is a temperature scale used in North America. Which scale starting with the letter C, is used in Europe? Celsius
4. Cardiology is the study of which organ? Heart
5. True or False – Carnivorous plants exist. True
6. What is a male rabbit called? A buck
7. What is ‘Cumulus’ the scientific name for? Cloud
8. Do ducks lay eggs? Yes
9. What are the two holes in your nose called? Nostrils
10. Which colour is Chlorophyll known for? Green

Round 7: Science and Universe questions for Kids

1. Which planet is the closest to the sun?
2. Which galaxy is Earth in?
3. What is the study of the universe called?
4. What is the common name given to the ‘Ursa Major’ constellation?
5. Which two planets have rings?

Round 7: Science and Universe questions and answers for Kids

1. Which planet is the closest to the sun? Mercury
2. Which galaxy is Earth in? The Milky Way
3. What is the study of the universe called? Astronomy
4. What is the common name given to the ‘Ursa Major’ constellation? The Great Bear
5. Which two planets have rings? Uranus and Saturn

We hope you enjoyed these science questions with answers for kids. If you did, make sure to check out our other quizzes for kids. They are perfect to test their knowledge and have a bit of fun!

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