Science quizzes are a fun and effective way for kids to learn, revise, and test their basic science knowledge. Whether you’re a parent, teacher, or student, these science quiz questions with answers for kids will help build curiosity, improve memory, and make learning enjoyable.
Below is a complete list of 100 science quiz questions with answers, suitable for kids from primary to middle school.
Easy Science Quiz Questions (1–25)
- What do plants need to make food?
Sunlight - Which planet do we live on?
Earth - What gas do humans need to breathe?
Oxygen - How many legs does an insect have?
Six - What is the boiling point of water?
100°C - Which part of the plant grows underground?
Root - What do we call animals that eat plants?
Herbivores - Which sense organ is used to see?
Eyes - What is frozen water called?
Ice - Which star gives us light and heat?
The Sun - How many days are there in a year?
365 days - What is rain made of?
Water - Which animal is known as the King of the Jungle?
Lion - What do birds use to fly?
Wings - Which planet is closest to the Sun?
Mercury - What is the color of leaves?
Green - Which organ pumps blood in our body?
Heart - What is the shape of the Earth?
Round - Which part of the body helps us hear?
Ears - What do we call baby cats?
Kittens - Which animal gives us milk?
Cow - What do fish use to breathe?
Gills - Which object tells time?
Clock - What is the opposite of hot?
Cold - What do we call the movement of air?
Wind
Basic Science GK Questions (26–50)
- Which planet is called the Red Planet?
Mars - What do we call animals that eat meat?
Carnivores - How many bones are in the human body?
206 - Which gas do plants absorb from air?
Carbon dioxide - What is the largest land animal?
Elephant - Which part of the plant makes food?
Leaf - What do we call a scientist who studies plants?
Botanist - What is the nearest planet to Earth?
Venus - Which metal is liquid at room temperature?
Mercury - Which animal is known as the Ship of the Desert?
Camel - What is the hardest natural substance?
Diamond - Which gas is filled in balloons?
Helium - What do we call the change of water into vapor?
Evaporation - Which sense organ helps us smell?
Nose - What do frogs live on land and water?
Amphibians - Which planet has rings around it?
Saturn - Which vitamin do we get from sunlight?
Vitamin D - What is the largest organ in the human body?
Skin - Which part of the body helps us think?
Brain - What is the main source of energy on Earth?
Sun - Which animal can live without water for many days?
Camel - What is the process of breathing called?
Respiration - What do we call animals that live in water?
Aquatic animals - Which planet is known as the Morning Star?
Venus - What is the color of the sky?
Blue
Fun Science Questions for Kids (51–75)
- Which bird cannot fly?
Ostrich - What do bees make?
Honey - Which organ helps us digest food?
Stomach - What is the tallest animal in the world?
Giraffe - What do we call solid rain?
Hail - Which animal is known for its long trunk?
Elephant - What do plants give us to breathe?
Oxygen - Which planet is the largest?
Jupiter - What do we call a group of stars?
Constellation - Which sense organ helps us taste?
Tongue - What do cows eat?
Grass - Which animal is known as man’s best friend?
Dog - What is the white part of an egg called?
Albumen - Which object reflects light?
Mirror - What do we call animals that eat both plants and meat?
Omnivores - Which planet is known as the Blue Planet?
Earth - What is the freezing point of water?
0°C - Which part of the body helps us walk?
Legs - What is the nearest star to Earth?
Sun - Which animal sleeps during the day and stays awake at night?
Owl - What do we call young dogs?
Puppies - Which gas is essential for fire to burn?
Oxygen - What do we call the study of animals?
Zoology - Which planet is farthest from the Sun?
Neptune - What is rainwater collected in called?
Ponds / Rivers
Slightly Advanced Science Questions (76–100)
- What is the force that pulls objects to Earth?
Gravity - Which organ filters blood in our body?
Kidney - What is the natural satellite of Earth?
Moon - Which instrument measures temperature?
Thermometer - What do we call the process of plants losing water through leaves?
Transpiration - Which animal is the largest mammal?
Blue Whale - What do we call the study of weather?
Meteorology - Which vitamin is found in citrus fruits?
Vitamin C - What is the change from solid to liquid called?
Melting - Which planet is famous for its big red spot?
Jupiter - What do we call energy stored in food?
Chemical energy - Which part of the eye controls light entry?
Pupil - What is the smallest unit of life?
Cell - Which gas is most abundant in the air?
Nitrogen - What do we call the path of a planet around the Sun?
Orbit - Which organ helps fish swim?
Fins - What type of animal is a dolphin?
Mammal - Which material is attracted to magnets?
Iron - What do we call the study of space?
Astronomy - Which blood cells help fight diseases?
White blood cells - What is the speed of light faster than?
Sound - Which planet has the most moons?
Saturn - What is the main source of energy for living organisms?
Food - Which organ stores urine?
Urinary bladder - What do we call the process of making food in plants?
Photosynthesis
Conclusion
Learning science becomes much more enjoyable when it is presented in a fun and interactive way. These 100 science quiz questions with answers are designed to help kids strengthen their basic concepts, improve logical thinking, and develop a natural curiosity about the world around them. Regular practice with such quizzes not only boosts confidence but also makes classroom learning easier and more engaging. Whether used at home, in school, or during quiz competitions, this collection serves as a simple yet effective learning resource that encourages children to explore science with interest and excitement.
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