{"id":36,"date":"2026-03-25T12:05:51","date_gmt":"2026-03-25T12:05:51","guid":{"rendered":"https:\/\/admissions.dpsgurugram.com\/blog\/science-quiz-questions-and-answers-for-kids\/"},"modified":"2026-09-16T03:08:45","modified_gmt":"2026-09-16T03:08:45","slug":"science-quiz-questions-and-answers-for-kids","status":"publish","type":"post","link":"https:\/\/dpsgurugram.com\/blog\/science-quiz-questions-and-answers-for-kids\/","title":{"rendered":"200+ Science Quiz Questions and Answers For Kids"},"content":{"rendered":"

Science is everywhere, in the clouds floating above us, in the food we eat, and even in the devices we use every day. One of the most exciting ways to spark curiosity in young minds is through science quiz questions that challenge them to think, wonder, and discover.<\/p>\n

Whether you are a teacher looking for classroom activities, a parent planning a fun quiz night, or a student brushing up for a competition, this collection of 250+ questions is your go-to guide.<\/p>\n

From the tiniest cells in our body to the vast expanse of the universe, every category here is packed with fascinating facts your child will love to learn. So, get ready to test your knowledge and have a blast with science!<\/p>\n

Why Science Quizzes Are Important for Kids<\/b><\/h2>\n

Science quizzes are not just about testing knowledge. They help kids think, ask questions, and understand the world better. They improve memory, encourage logical thinking, and make learning interactive. <\/span><\/p>\n

Kids also develop problem-solving skills and gain confidence when they answer questions correctly. Most importantly, quizzes turn learning into a fun activity rather than a boring task.<\/span><\/p>\n

Also Read: <\/em>250+ General Knowledge Questions With Answers For Kids<\/a><\/strong><\/p>\n

1. Biology Quiz Questions<\/b><\/h2>\n

Biology is the study of living things, from the tiniest bacteria to the largest whale. These questions will help kids understand the wonderful world of plants, animals, and the human body.<\/span><\/p>\n

Q1. What is the powerhouse of the cell?<\/b><\/p>\n

Answer:<\/b> Mitochondria<\/span><\/p>\n

Q2. How many chambers does the human heart have?<\/b><\/p>\n

Answer:<\/b> Four<\/span><\/p>\n

Q3. What is the process by which plants make their own food?<\/b><\/p>\n

Answer:<\/b> Photosynthesis<\/span><\/p>\n

Q4. Which organ in the human body produces insulin?<\/b><\/p>\n

Answer:<\/b> Pancreas<\/span><\/p>\n

Q5. What is the largest organ of the human body?<\/b><\/p>\n

Answer:<\/b> Skin<\/span><\/p>\n

Q6. How many bones are in the adult human body?<\/b><\/p>\n

Answer:<\/b> 206<\/span><\/p>\n

Q7. What do we call the study of insects?<\/b><\/p>\n

Answer:<\/b> Entomology<\/span><\/p>\n

Q8. Which part of the plant absorbs water and nutrients from the soil?<\/b><\/p>\n

Answer:<\/b> Roots<\/span><\/p>\n

Q9. What is the scientific name for the human species?<\/b><\/p>\n

Answer:<\/b> Homo sapiens<\/span><\/p>\n

Q10. Which blood cells help fight infections?<\/b><\/p>\n

Answer:<\/b> White blood cells (leukocytes)<\/span><\/p>\n

Q11. What is the basic unit of life?<\/b><\/p>\n

Answer:<\/b> The cell<\/span><\/p>\n

Q12. What green pigment is found in plant leaves?<\/b><\/p>\n

Answer:<\/b> Chlorophyll<\/span><\/p>\n

Q13. Which organ is responsible for pumping blood throughout the body?<\/b><\/p>\n

Answer:<\/b> The heart<\/span><\/p>\n

Q14. What do we call animals that eat only plants?<\/b><\/p>\n

Answer:<\/b> Herbivores<\/span><\/p>\n

Q15. Which part of a flower becomes the fruit?<\/b><\/p>\n

Answer:<\/b> The ovary<\/span><\/p>\n

Q16. What is the process of a caterpillar turning into a butterfly called?<\/b><\/p>\n

Answer:<\/b> Metamorphosis<\/span><\/p>\n

Q17. How many legs does a spider have?<\/b><\/p>\n

Answer:<\/b> Eight<\/span><\/p>\n

Q18. What is the longest bone in the human body?<\/b><\/p>\n

Answer:<\/b> The femur (thigh bone)<\/span><\/p>\n

Q19. Which gas do plants absorb during photosynthesis?<\/b><\/p>\n

Answer:<\/b> Carbon dioxide (CO\u2082)<\/span><\/p>\n

Q20. What do we call animals that eat both plants and meat?<\/b><\/p>\n

Answer:<\/b> Omnivores<\/span><\/p>\n

Q21. What is the fluid that carries blood cells through the body?<\/b><\/p>\n

Answer:<\/b> Plasma<\/span><\/p>\n

Q22. Which organ filters waste from the blood to make urine?<\/b><\/p>\n

Answer:<\/b> Kidneys<\/span><\/p>\n

Q23. What is the name of the process by which organisms produce offspring?<\/b><\/p>\n

Answer:<\/b> Reproduction<\/span><\/p>\n

Q24. What do we call the outer protective layer of a tree?<\/b><\/p>\n

Answer:<\/b> Bark<\/span><\/p>\n

Q25. Which part of the brain controls balance and coordination?<\/b><\/p>\n

Answer:<\/b> Cerebellum<\/span><\/p>\n

Also Read:\u00a0<\/em>The Real Benefits of Holiday Homework for Students<\/a><\/strong><\/p>\n

2. Chemistry Quiz Questions<\/b><\/h2>\n

Chemistry is the science of matter, what things are made of and how they change and interact. These science questions will introduce kids to the fascinating world of atoms, elements, and chemical reactions.<\/span><\/p>\n

Q26. What is the chemical symbol for water?<\/b><\/p>\n

Answer:<\/b> H\u2082O<\/span><\/p>\n

Q27. What is the most abundant gas in Earth’s atmosphere?<\/b><\/p>\n

Answer:<\/b> Nitrogen (about 78%)<\/span><\/p>\n

Q28. What do we call a substance that cannot be broken down into simpler substances by chemical means?<\/b><\/p>\n

Answer:<\/b> An element<\/span><\/p>\n

Q29. What is the chemical formula of table salt?<\/b><\/p>\n

Answer:<\/b> NaCl (sodium chloride)<\/span><\/p>\n

Q30. What is the pH value of pure water?<\/b><\/p>\n

Answer:<\/b> 7 (neutral)<\/span><\/p>\n

Q31. What do we call the smallest particle of an element that retains its chemical properties?<\/b><\/p>\n

Answer:<\/b> An atom<\/span><\/p>\n

Q32. Which element has the chemical symbol ‘O’?<\/b><\/p>\n

Answer:<\/b> Oxygen<\/span><\/p>\n

Q33. What is the process of a liquid turning into a gas called?<\/b><\/p>\n

Answer:<\/b> Evaporation<\/span><\/p>\n

Q34. Which metal is liquid at room temperature?<\/b><\/p>\n

Answer:<\/b> Mercury<\/span><\/p>\n

Q35. What gas is produced when you mix vinegar and baking soda?<\/b><\/p>\n

Answer:<\/b> Carbon dioxide (CO\u2082)<\/span><\/p>\n

Q36. What is the chemical symbol for gold?<\/b><\/p>\n

Answer:<\/b> Au<\/span><\/p>\n

Q37. What type of bond holds water molecules together?<\/b><\/p>\n

Answer:<\/b> Hydrogen bond<\/span><\/p>\n

Q38. What do we call a substance that speeds up a chemical reaction without being consumed?<\/b><\/p>\n

Answer:<\/b> A catalyst<\/span><\/p>\n

Q39. What is the most reactive group of metals on the periodic table?<\/b><\/p>\n

Answer:<\/b> Alkali metals (Group 1)<\/span><\/p>\n

Q40. What is dry ice made of?<\/b><\/p>\n

Answer:<\/b> Solid carbon dioxide (CO\u2082)<\/span><\/p>\n

Q41. Which element is the hardest natural substance on Earth?<\/b><\/p>\n

Answer:<\/b> Carbon (in the form of diamond)<\/span><\/p>\n

Q42. What is the name of the scale used to measure acidity or alkalinity?<\/b><\/p>\n

Answer:<\/b> The pH scale<\/span><\/p>\n

Q43. What do we call the change of a solid directly into a gas?<\/b><\/p>\n

Answer:<\/b> Sublimation<\/span><\/p>\n

Q44. Which element has the symbol ‘Fe’ on the periodic table?<\/b><\/p>\n

Answer:<\/b> Iron<\/span><\/p>\n

Q45. What is the process of separating a mixture by passing it through a filter?<\/b><\/p>\n

Answer:<\/b> Filtration<\/span><\/p>\n

Q46. What color does litmus paper turn in an acid?<\/b><\/p>\n

Answer:<\/b> Red<\/span><\/p>\n

Q47. What is the chemical symbol for silver?<\/b><\/p>\n

Answer:<\/b> Ag<\/span><\/p>\n

Q48. What type of reaction produces heat and light, such as burning?<\/b><\/p>\n

Answer:<\/b> Combustion reaction<\/span><\/p>\n

Q49. What is the name of the force that holds atoms together in a molecule?<\/b><\/p>\n

Answer:<\/b> Chemical bond<\/span><\/p>\n

Q50. Which planet in our solar system is made mostly of hydrogen and helium?<\/b><\/p>\n

Answer:<\/b> Jupiter<\/span><\/p>\n

Also Read:\u00a0<\/em><\/strong>12 Benefits Of Reading Books For Students<\/strong><\/a><\/p>\n

3. Physics Quiz Questions<\/b><\/h2>\n

Physics explains the fundamental forces and laws that govern our universe, from gravity and electricity to light and sound. These questions will challenge young scientists to think about how the world works.<\/span><\/p>\n

Q51. What is the speed of light in a vacuum?<\/b><\/p>\n

Answer:<\/b> Approximately 300,000 km\/s (3 \u00d7 10\u2078 m\/s)<\/span><\/p>\n

Q52. What force pulls objects toward the Earth?<\/b><\/p>\n

Answer:<\/b> Gravity<\/span><\/p>\n

Q53. Who formulated the three laws of motion?<\/b><\/p>\n

Answer:<\/b> Sir Isaac Newton<\/span><\/p>\n

Q54. What is the unit of electrical resistance?<\/b><\/p>\n

Answer:<\/b> Ohm (\u03a9)<\/span><\/p>\n

Q55. What type of energy does a moving object have?<\/b><\/p>\n

Answer:<\/b> Kinetic energy<\/span><\/p>\n

Q56. What do we call the energy stored in an object due to its position?<\/b><\/p>\n

Answer:<\/b> Potential energy<\/span><\/p>\n

Q57. What is the unit of force named after a famous scientist?<\/b><\/p>\n

Answer:<\/b> Newton (N)<\/span><\/p>\n

Q58. What type of wave does not require a medium to travel?<\/b><\/p>\n

Answer:<\/b> Electromagnetic wave (e.g., light)<\/span><\/p>\n

Q59. What is the name of the phenomenon where light bends as it passes through different mediums?<\/b><\/p>\n

Answer:<\/b> Refraction<\/span><\/p>\n

Q60. What is the unit of power?<\/b><\/p>\n

Answer:<\/b> Watt (W)<\/span><\/p>\n

Q61. What do we call the bouncing back of light from a surface?<\/b><\/p>\n

Answer:<\/b> Reflection<\/span><\/p>\n

Q62. What is the SI unit of temperature?<\/b><\/p>\n

Answer:<\/b> Kelvin (K)<\/span><\/p>\n

Q63. Which colour has the longest wavelength in the visible spectrum?<\/b><\/p>\n

Answer:<\/b> Red<\/span><\/p>\n

Q64. What is the principle that states energy cannot be created or destroyed?<\/b><\/p>\n

Answer:<\/b> Law of Conservation of Energy<\/span><\/p>\n

Q65. What type of lens is used to correct short-sightedness?<\/b><\/p>\n

Answer:<\/b> Concave lens<\/span><\/p>\n

Q66. What is measured in decibels (dB)?<\/b><\/p>\n

Answer:<\/b> Sound intensity (loudness)<\/span><\/p>\n

Q67. Which particle in an atom has a negative charge?<\/b><\/p>\n

Answer:<\/b> Electron<\/span><\/p>\n

Q68. What is the unit of electric current?<\/b><\/p>\n

Answer:<\/b> Ampere (A)<\/span><\/p>\n

Q69. What do we call the resistance of a liquid to flow?<\/b><\/p>\n

Answer:<\/b> Viscosity<\/span><\/p>\n

Q70. What is the name of the force that opposes the relative motion of two surfaces in contact?<\/b><\/p>\n

Answer:<\/b> Friction<\/span><\/p>\n

Q71. What type of mirror is used in car rear-view mirrors?<\/b><\/p>\n

Answer:<\/b> Convex mirror<\/span><\/p>\n

Q72. What is the formula for calculating speed?<\/b><\/p>\n

Answer:<\/b> Speed = Distance \u00f7 Time<\/span><\/p>\n

Q73. What do we call the splitting of white light into its constituent colours?<\/b><\/p>\n

Answer:<\/b> Dispersion<\/span><\/p>\n

Q74. Which law states that for every action there is an equal and opposite reaction?<\/b><\/p>\n

Answer:<\/b> Newton’s Third Law of Motion<\/span><\/p>\n

Q75. What do we call the point where all the mass of an object is concentrated for calculation purposes?<\/b><\/p>\n

Answer:<\/b> Centre of gravity<\/span><\/p>\n

Also Read:\u00a0<\/em>What is Meant by Mock Tests & How Does it Help Students?<\/a><\/strong><\/p>\n

4. Earth Science Quiz Questions<\/b><\/h2>\n

Our planet is a marvel of science, from volcanic eruptions and tectonic plates to weather systems and ocean currents. These questions explore the science of Earth itself.<\/span><\/p>\n

Q76. What are the three main layers of the Earth?<\/b><\/p>\n

Answer:<\/b> Crust, mantle, and core<\/span><\/p>\n

Q77. What type of rock is formed from cooled lava?<\/b><\/p>\n

Answer:<\/b> Igneous rock<\/span><\/p>\n

Q78. What is the name of the layer of gases surrounding the Earth?<\/b><\/p>\n

Answer:<\/b> The atmosphere<\/span><\/p>\n

Q79. What do we call the study of earthquakes?<\/b><\/p>\n

Answer:<\/b> Seismology<\/span><\/p>\n

Q80. What is the water cycle also known as?<\/b><\/p>\n

Answer:<\/b> The hydrological cycle<\/span><\/p>\n

Q81. Which is the tallest mountain in the world?<\/b><\/p>\n

Answer:<\/b> Mount Everest<\/span><\/p>\n

Q82. What type of cloud is associated with thunderstorms?<\/b><\/p>\n

Answer:<\/b> Cumulonimbus<\/span><\/p>\n

Q83. What causes the seasons on Earth?<\/b><\/p>\n

Answer:<\/b> Earth’s tilted axis as it orbits the Sun<\/span><\/p>\n

Q84. What is the term for rocks formed from compressed sediments?<\/b><\/p>\n

Answer:<\/b> Sedimentary rock<\/span><\/p>\n

Q85. What percentage of the Earth’s surface is covered by water?<\/b><\/p>\n

Answer:<\/b> About 71%<\/span><\/p>\n

Q86. What do we call the boundary between two tectonic plates?<\/b><\/p>\n

Answer:<\/b> A fault line<\/span><\/p>\n

Q87. Which layer of the atmosphere contains the ozone layer?<\/b><\/p>\n

Answer:<\/b> The stratosphere<\/span><\/p>\n

Q88. What is the most common mineral in the Earth’s crust?<\/b><\/p>\n

Answer:<\/b> Feldspar<\/span><\/p>\n

Q89. What do we call a scientist who studies weather?<\/b><\/p>\n

Answer:<\/b> Meteorologist<\/span><\/p>\n

Q90. What is the deepest ocean trench in the world?<\/b><\/p>\n

Answer:<\/b> The Mariana Trench<\/span><\/p>\n

Q91. What is the name of the supercontinent that existed millions of years ago?<\/b><\/p>\n

Answer:<\/b> Pangaea<\/span><\/p>\n

Q92. What causes a rainbow to appear?<\/b><\/p>\n

Answer:<\/b> Refraction and reflection of sunlight in water droplets<\/span><\/p>\n

Q93. What do we call the point inside the Earth where an earthquake originates?<\/b><\/p>\n

Answer:<\/b> The focus (or hypocentre)<\/span><\/p>\n

Q94. What is the name of the scale used to measure earthquake magnitude?<\/b><\/p>\n

Answer:<\/b> The Richter Scale (or Moment Magnitude Scale)<\/span><\/p>\n

Q95. What is the term for the natural breakdown of rocks by water, wind, and temperature changes?<\/b><\/p>\n

Answer:<\/b> Weathering<\/span><\/p>\n

Q96. What do we call the natural satellite that orbits the Earth?<\/b><\/p>\n

Answer:<\/b> The Moon<\/span><\/p>\n

Q97. What type of rock is marble?<\/b><\/p>\n

Answer:<\/b> Metamorphic rock<\/span><\/p>\n

Q98. What is the name of the phenomenon where warm ocean water in the Pacific affects global weather?<\/b><\/p>\n

Answer:<\/b> El Ni\u00f1o<\/span><\/p>\n

Q99. What is the term for the point on the Earth’s surface directly above an earthquake’s focus?<\/b><\/p>\n

Answer:<\/b> Epicentre<\/span><\/p>\n

Q100. What do we call rainforests that receive rainfall throughout the year?<\/b><\/p>\n

Answer:<\/b> Tropical rainforests<\/span><\/p>\n

Also Read:\u00a0<\/em>How to Improve Handwriting: 9 Easy Tips for Students<\/a><\/strong><\/p>\n

5. Space and Astronomy Quiz Questions<\/b><\/h2>\n

The universe is vast, mysterious, and full of wonder. From the planets in our solar system to distant galaxies, these questions will take young minds on an incredible journey through space.<\/span><\/p>\n

Q101. How many planets are in our solar system?<\/b><\/p>\n

Answer:<\/b> Eight<\/span><\/p>\n

Q102. What is the closest star to Earth?<\/b><\/p>\n

Answer:<\/b> The Sun<\/span><\/p>\n

Q103. Which planet is known as the Red Planet?<\/b><\/p>\n

Answer:<\/b> Mars<\/span><\/p>\n

Q104. What is a light-year a measure of?<\/b><\/p>\n

Answer:<\/b> Distance (the distance light travels in one year)<\/span><\/p>\n

Q105. Which is the largest planet in our solar system?<\/b><\/p>\n

Answer:<\/b> Jupiter<\/span><\/p>\n

Q106. What do we call a rocky body that orbits the Sun and sometimes has a glowing tail?<\/b><\/p>\n

Answer:<\/b> A comet<\/span><\/p>\n

Q107. What is the name of Earth’s galaxy?<\/b><\/p>\n

Answer:<\/b> The Milky Way<\/span><\/p>\n

Q108. Which planet has the most moons?<\/b><\/p>\n

Answer:<\/b> Saturn (with over 140 confirmed moons as of 2023)<\/span><\/p>\n

Q109. What do we call a region of space with gravity so strong that even light cannot escape?<\/b><\/p>\n

Answer:<\/b> A black hole<\/span><\/p>\n

Q110. What is the name of the first artificial satellite launched into space?<\/b><\/p>\n

Answer:<\/b> Sputnik 1 (launched by the Soviet Union in 1957)<\/span><\/p>\n

Q111. Who was the first human to walk on the Moon?<\/b><\/p>\n

Answer:<\/b> Neil Armstrong (1969)<\/span><\/p>\n

Q112. What is the name of the force responsible for keeping planets in orbit around the Sun?<\/b><\/p>\n

Answer:<\/b> Gravity<\/span><\/p>\n

Q113. Which planet is known for its prominent ring system?<\/b><\/p>\n

Answer:<\/b> Saturn<\/span><\/p>\n

Q114. What do we call the dark spots on the Sun’s surface?<\/b><\/p>\n

Answer:<\/b> Sunspots<\/span><\/p>\n

Q115. What type of star is our Sun?<\/b><\/p>\n

Answer:<\/b> A yellow dwarf star (G-type main-sequence star)<\/span><\/p>\n

Q116. What is the term for the path a planet follows around the Sun?<\/b><\/p>\n

Answer:<\/b> An orbit<\/span><\/p>\n

Q117. What do we call a large collection of stars, gas, and dust held together by gravity?<\/b><\/p>\n

Answer:<\/b> A galaxy<\/span><\/p>\n

Q118. Which planet is closest to the Sun?<\/b><\/p>\n

Answer:<\/b> Mercury<\/span><\/p>\n

Q119. What is the name of the largest known volcano in our solar system?<\/b><\/p>\n

Answer:<\/b> Olympus Mons (on Mars)<\/span><\/p>\n

Q120. What do we call a small, rocky body that burns up upon entering Earth’s atmosphere?<\/b><\/p>\n

Answer:<\/b> A meteor (shooting star)<\/span><\/p>\n

Q121. What is the name of NASA’s famous space telescope launched in 1990?<\/b><\/p>\n

Answer:<\/b> The Hubble Space Telescope<\/span><\/p>\n

Q122. Which planet rotates on its side (axial tilt of about 98\u00b0)?<\/b><\/p>\n

Answer:<\/b> Uranus<\/span><\/p>\n

Q123. What is the name of the boundary at the edge of our solar system?<\/b><\/p>\n

Answer:<\/b> The heliopause<\/span><\/p>\n

Q124. What do we call the alignment of three or more celestial bodies in a straight line?<\/b><\/p>\n

Answer:<\/b> A syzygy<\/span><\/p>\n

Q125. What is the name of the first man-made object to leave our solar system?<\/b><\/p>\n

Answer:<\/b> Voyager 1 (launched in 1977)<\/span><\/p>\n

Also Read:\u00a0<\/em>How to Become a Topper: 12 Proven Study Tips<\/a><\/strong><\/p>\n

6. Human Body Quiz Questions<\/b><\/h2>\n

The human body is a remarkable machine. With trillions of cells working in perfect harmony, it is one of nature’s greatest masterpieces. These questions explore how our body works, from head to toe.<\/span><\/p>\n

Q126. How many teeth does an adult human have (including wisdom teeth)?<\/b><\/p>\n

Answer:<\/b> 32<\/span><\/p>\n

Q127. What is the name of the largest artery in the human body?<\/b><\/p>\n

Answer:<\/b> The aorta<\/span><\/p>\n

Q128. Which part of the brain controls thinking, memory, and decision-making?<\/b><\/p>\n

Answer:<\/b> The cerebrum<\/span><\/p>\n

Q129. What is the name of the tube that connects the throat to the stomach?<\/b><\/p>\n

Answer:<\/b> The oesophagus<\/span><\/p>\n

Q130. How many pairs of ribs does the human body have?<\/b><\/p>\n

Answer:<\/b> 12 pairs (24 ribs total)<\/span><\/p>\n

Q131. What is the name of the fluid that lubricates our joints?<\/b><\/p>\n

Answer:<\/b> Synovial fluid<\/span><\/p>\n

Q132. Which vitamin is primarily produced when our skin is exposed to sunlight?<\/b><\/p>\n

Answer:<\/b> Vitamin D<\/span><\/p>\n

Q133. What is the name of the small intestine’s first section?<\/b><\/p>\n

Answer:<\/b> The duodenum<\/span><\/p>\n

Q134. What do we call the tiny air sacs in the lungs where gas exchange takes place?<\/b><\/p>\n

Answer:<\/b> Alveoli<\/span><\/p>\n

Q135. Which gland is known as the ‘master gland’ of the endocrine system?<\/b><\/p>\n

Answer:<\/b> The pituitary gland<\/span><\/p>\n

Q136. What is the name of the protein in red blood cells that carries oxygen?<\/b><\/p>\n

Answer:<\/b> Haemoglobin<\/span><\/p>\n

Q137. How many muscles does the human body have, approximately?<\/b><\/p>\n

Answer:<\/b> About 600 muscles<\/span><\/p>\n

Q138. What do we call the bony structure that protects the brain?<\/b><\/p>\n

Answer:<\/b> The skull (cranium)<\/span><\/p>\n

Q139. What is the name of the involuntary muscle that makes up the heart?<\/b><\/p>\n

Answer:<\/b> Cardiac muscle<\/span><\/p>\n

Q140. Which organ produces bile to help digest fats?<\/b><\/p>\n

Answer:<\/b> The liver<\/span><\/p>\n

Q141. What is the name of the membrane that surrounds the lungs?<\/b><\/p>\n

Answer:<\/b> The pleura<\/span><\/p>\n

Q142. How many chromosomes does a normal human cell contain?<\/b><\/p>\n

Answer:<\/b> 46 chromosomes (23 pairs)<\/span><\/p>\n

Q143. What do we call the area of the skin that contains hair follicles and sweat glands?<\/b><\/p>\n

Answer:<\/b> The dermis<\/span><\/p>\n

Q144. What is the name of the largest part of the large intestine?<\/b><\/p>\n

Answer:<\/b> The colon<\/span><\/p>\n

Q145. Which sense organ contains the cochlea?<\/b><\/p>\n

Answer:<\/b> The ear<\/span><\/p>\n

Q146. What do we call the three tiny bones in the middle ear?<\/b><\/p>\n

Answer:<\/b> Ossicles (malleus, incus, and stapes)<\/span><\/p>\n

Q147. What is the name of the substance that makes up fingernails and hair?<\/b><\/p>\n

Answer:<\/b> Keratin<\/span><\/p>\n

Q148. Which lobe of the brain processes vision?<\/b><\/p>\n

Answer:<\/b> The occipital lobe<\/span><\/p>\n

Q149. What do we call the muscle that separates the chest cavity from the abdominal cavity?<\/b><\/p>\n

Answer:<\/b> The diaphragm<\/span><\/p>\n

Q150. What is the name of the process by which the body maintains a stable internal environment?<\/b><\/p>\n

Answer:<\/b> Homeostasis<\/span><\/p>\n

Also Read:<\/em> 27 Easy Life Hacks For School Students<\/a><\/strong><\/p>\n

7. Environment and Ecology Quiz Questions<\/b><\/h2>\n

Our environment is a complex web of living and non-living things that depend on one another for survival. These questions encourage kids to think about nature, ecosystems, and how we can protect our planet.<\/span><\/p>\n

Q151. What do we call a community of organisms interacting with their environment?<\/b><\/p>\n

Answer:<\/b> An ecosystem<\/span><\/p>\n

Q152. What is the term for an animal that feeds on dead organic matter?<\/b><\/p>\n

Answer:<\/b> A decomposer (or detritivore)<\/span><\/p>\n

Q153. What is the name of the process by which plants release water vapour through their leaves?<\/b><\/p>\n

Answer:<\/b> Transpiration<\/span><\/p>\n

Q154. What do we call the gradual increase in the Earth’s average temperature due to greenhouse gases?<\/b><\/p>\n

Answer:<\/b> Global warming<\/span><\/p>\n

Q155. Which gas is primarily responsible for the greenhouse effect?<\/b><\/p>\n

Answer:<\/b> Carbon dioxide (CO\u2082)<\/span><\/p>\n

Q156. What do we call an organism that produces its own food through photosynthesis?<\/b><\/p>\n

Answer:<\/b> A producer (autotroph)<\/span><\/p>\n

Q157. What is the term for the variety of life in a particular habitat or ecosystem?<\/b><\/p>\n

Answer:<\/b> Biodiversity<\/span><\/p>\n

Q158. What do we call the movement of carbon through living organisms, the atmosphere, and the Earth?<\/b><\/p>\n

Answer:<\/b> The carbon cycle<\/span><\/p>\n

Q159. What is the name of the layer in the atmosphere that absorbs harmful UV radiation?<\/b><\/p>\n

Answer:<\/b> The ozone layer<\/span><\/p>\n

Q160. What do we call a food chain that shows the feeding relationships in an ecosystem?<\/b><\/p>\n

Answer:<\/b> A food web<\/span><\/p>\n

Q161. What type of pollution is caused by too much noise in the environment?<\/b><\/p>\n

Answer:<\/b> Noise pollution<\/span><\/p>\n

Q162. What is the term for species that are at risk of becoming extinct?<\/b><\/p>\n

Answer:<\/b> Endangered species<\/span><\/p>\n

Q163. What do we call the natural home or environment of an organism?<\/b><\/p>\n

Answer:<\/b> A habitat<\/span><\/p>\n

Q164. What is acid rain caused by?<\/b><\/p>\n

Answer:<\/b> Air pollution (sulphur dioxide and nitrogen oxides dissolving in rainwater)<\/span><\/p>\n

Q165. What is the name of the process where organic waste is broken down by microorganisms?<\/b><\/p>\n

Answer:<\/b> Decomposition<\/span><\/p>\n

Q166. What do we call the organisms at the top of a food chain?<\/b><\/p>\n

Answer:<\/b> Apex predators<\/span><\/p>\n

Q167. What is the term for the damage caused to an ecosystem by human activities?<\/b><\/p>\n

Answer:<\/b> Environmental degradation<\/span><\/p>\n

Q168. What do we call the relationship where both organisms benefit from each other?<\/b><\/p>\n

Answer:<\/b> Mutualism<\/span><\/p>\n

Q169. What is the name of the zone in the ocean where sunlight does not reach?<\/b><\/p>\n

Answer:<\/b> The aphotic zone<\/span><\/p>\n

Q170. What do we call the process of restoring a forest that has been destroyed?<\/b><\/p>\n

Answer:<\/b> Reforestation<\/span><\/p>\n

Q171. What type of energy does solar power harness?<\/b><\/p>\n

Answer:<\/b> Sunlight (solar energy)<\/span><\/p>\n

Q172. What do we call the movement of animals from one region to another due to seasonal changes?<\/b><\/p>\n

Answer:<\/b> Migration<\/span><\/p>\n

Q173. What is the role an organism plays in its ecosystem called?<\/b><\/p>\n

Answer:<\/b> Its ecological niche<\/span><\/p>\n

Q174. What is the name of the international agreement aimed at reducing greenhouse gas emissions?<\/b><\/p>\n

Answer:<\/b> The Paris Agreement (2015)<\/span><\/p>\n

Q175. What do we call the process by which plants release oxygen as a by-product of photosynthesis?<\/b><\/p>\n

Answer:<\/b> Oxygen evolution<\/span><\/p>\n

Also Read:\u00a0<\/em>10 Benefits of Reading Newspaper for Students Daily<\/a><\/strong><\/p>\n

8. Technology and Inventions Quiz Questions<\/b><\/h2>\n

Science and technology go hand in hand. From ancient tools to modern computers, human ingenuity has shaped the world we live in. These questions celebrate some of the most important discoveries and inventions in history.<\/span><\/p>\n

Q176. Who invented the telephone?<\/b><\/p>\n

Answer:<\/b> Alexander Graham Bell (1876)<\/span><\/p>\n

Q177. What does ‘www’ stand for in a web address?<\/b><\/p>\n

Answer:<\/b> World Wide Web<\/span><\/p>\n

Q178. Who is credited with inventing the practical light bulb?<\/b><\/p>\n

Answer:<\/b> Thomas Edison (1879)<\/span><\/p>\n

Q179. What does ‘DNA’ stand for?<\/b><\/p>\n

Answer:<\/b> Deoxyribonucleic acid<\/span><\/p>\n

Q180. What was the name of the world’s first electronic general-purpose computer?<\/b><\/p>\n

Answer:<\/b> ENIAC (1945)<\/span><\/p>\n

Q181. Who invented the World Wide Web?<\/b><\/p>\n

Answer:<\/b> Tim Berners-Lee (1989)<\/span><\/p>\n

Q182. What does ‘LED’ stand for?<\/b><\/p>\n

Answer:<\/b> Light Emitting Diode<\/span><\/p>\n

Q183. What technology uses sound waves to detect objects underwater?<\/b><\/p>\n

Answer:<\/b> SONAR (Sound Navigation and Ranging)<\/span><\/p>\n

Q184. Who discovered penicillin, the first antibiotic?<\/b> A<\/b><\/p>\n

nswer:<\/b> Alexander Fleming (1928)<\/span><\/p>\n

Q185. What is the name of the device that converts solar energy into electrical energy?<\/b><\/p>\n

Answer:<\/b> A solar cell (photovoltaic cell)<\/span><\/p>\n

Q186. What does ‘GPS’ stand for?<\/b><\/p>\n

Answer:<\/b> Global Positioning System<\/span><\/p>\n

Q187. Who invented the printing press?<\/b><\/p>\n

Answer:<\/b> Johannes Gutenberg (around 1440)<\/span><\/p>\n

Q188. What do we call a computer program that can learn and improve from experience?<\/b><\/p>\n

Answer:<\/b> Artificial intelligence (AI) or machine learning<\/span><\/p>\n

Q189. What does ‘RAM’ stand for in computing?<\/b><\/p>\n

Answer:<\/b> Random Access Memory<\/span><\/p>\n

Q190. Who is known as the father of modern physics?<\/b><\/p>\n

Answer:<\/b> Albert Einstein<\/span><\/p>\n

Q191. What technology is used in MRI scans to create images of the body?<\/b><\/p>\n

Answer:<\/b> Magnetic resonance imaging (using magnetic fields and radio waves)<\/span><\/p>\n

Q192. Who invented the steam engine that powered the Industrial Revolution?<\/b><\/p>\n

Answer:<\/b> James Watt (improved design, 1769)<\/span><\/p>\n

Q193. What is the name of the programming language created by Guido van Rossum?<\/b><\/p>\n

Answer:<\/b> Python<\/span><\/p>\n

Q194. What do we call a network that connects computers around the world?<\/b><\/p>\n

Answer:<\/b> The internet<\/span><\/p>\n

Q195. What technology is used to create three-dimensional objects layer by layer?<\/b><\/p>\n

Answer:<\/b> 3D printing (additive manufacturing)<\/span><\/p>\n

Q196. What do we call the use of living organisms to develop useful products?<\/b><\/p>\n

Answer:<\/b> Biotechnology<\/span><\/p>\n

Q197. What does ‘CPU’ stand for in computing?<\/b><\/p>\n

Answer:<\/b> Central Processing Unit<\/span><\/p>\n

Q198. Which scientist developed the theory of general relativity?<\/b><\/p>\n

Answer:<\/b> Albert Einstein (1915)<\/span><\/p>\n

Q199. What is the name of the process used to purify drinking water by removing impurities using a membrane?<\/b><\/p>\n

Answer:<\/b> Reverse osmosis<\/span><\/p>\n

Q200. What do we call a machine that can perform tasks automatically without human intervention?<\/b><\/p>\n

Answer:<\/b> A robot<\/span><\/p>\n

Also Read:\u00a0<\/em>List of National Symbols of India For Kids<\/a><\/strong><\/p>\n

9. Fun Science Trivia Questions<\/b><\/h2>\n

Here are some fascinating and surprising science trivia questions that will leave kids amazed! These are perfect for quiz competitions and are sure to spark lively conversations.<\/span><\/p>\n

Q201. What is the hottest planet in our solar system?<\/b><\/p>\n

Answer:<\/b> Venus (not Mercury, despite being closest to the Sun \u2014 its thick atmosphere traps heat)<\/span><\/p>\n

Q202. What is the only mammal capable of true flight?<\/b><\/p>\n

Answer:<\/b> The bat<\/span><\/p>\n

Q203. How many hearts does an octopus have?<\/b><\/p>\n

Answer:<\/b> Three<\/span><\/p>\n

Q204. What colour is the blood of a horseshoe crab?<\/b><\/p>\n

Answer:<\/b> Blue<\/span><\/p>\n

Q205. Which planet has a day longer than its year?<\/b><\/p>\n

Answer:<\/b> Venus<\/span><\/p>\n

Q206. What is the fear of spiders called?<\/b><\/p>\n

Answer:<\/b> Arachnophobia<\/span><\/p>\n

Q207. Can you hear sound in space?<\/b><\/p>\n

Answer:<\/b> No, because space is a vacuum, and sound needs a medium to travel<\/span><\/p>\n

Q208. What is the smallest planet in our solar system?<\/b><\/p>\n

Answer:<\/b> Mercury<\/span><\/p>\n

Q209. What percentage of the human body is water?<\/b><\/p>\n

Answer:<\/b> About 60%<\/span><\/p>\n

Q210. Why does the sky appear blue?<\/b><\/p>\n

Answer:<\/b> Because of the scattering of sunlight by Earth’s atmosphere (Rayleigh scattering)<\/span><\/p>\n

Q211. What animal has the largest eyes of any living creature?<\/b><\/p>\n

Answer:<\/b> The giant squid<\/span><\/p>\n

Q212. How long does it take for light from the Sun to reach Earth?<\/b><\/p>\n

Answer:<\/b> About 8 minutes and 20 seconds<\/span><\/p>\n

Q213. Which is the only planet in the solar system that rotates clockwise (as seen from above the North Pole)?<\/b><\/p>\n

Answer:<\/b> Venus<\/span><\/p>\n

Q214. What is the name of the world’s largest living structure?<\/b><\/p>\n

Answer:<\/b> The Great Barrier Reef<\/span><\/p>\n

Q215. What do we call a group of fish swimming together?<\/b><\/p>\n

Answer:<\/b> A school of fish<\/span><\/p>\n

Q216. What makes fizzy drinks fizzy?<\/b><\/p>\n

Answer:<\/b> Dissolved carbon dioxide (CO\u2082) gas under pressure<\/span><\/p>\n

Q217. How many colours are in a rainbow?<\/b><\/p>\n

Answer:<\/b> Seven \u2014 violet, indigo, blue, green, yellow, orange, and red (VIBGYOR)<\/span><\/p>\n

Q218. Why do we see lightning before we hear thunder?<\/b><\/p>\n

Answer:<\/b> Because light travels much faster than sound<\/span><\/p>\n

Q219. What is the name of the first man-made object to leave our solar system?<\/b><\/p>\n

Answer:<\/b> Voyager 1 (launched in 1977)<\/span><\/p>\n

Q220. What do we call the outer edge of a shadow where light is only partially blocked?<\/b><\/p>\n

Answer:<\/b> The penumbra<\/span><\/p>\n

Q221. A snail can sleep for how long?<\/b><\/p>\n

Answer:<\/b> Up to three years during unfavourable conditions<\/span><\/p>\n

Q222. Which is the fastest land animal on Earth?<\/b><\/p>\n

Answer:<\/b> The cheetah (reaching speeds of up to 120 km\/h)<\/span><\/p>\n

Q223. What is the name of the process by which a liquid becomes a solid?<\/b><\/p>\n

Answer:<\/b> Freezing (or solidification)<\/span><\/p>\n

Q224. What do we call a scientist who studies fossils?<\/b><\/p>\n

Answer:<\/b> A palaeontologist<\/span><\/p>\n

Q225. What is the most abundant element in the universe?<\/b><\/p>\n

Answer:<\/b> Hydrogen<\/span><\/p>\n

Conclusion<\/b><\/h2>\n

Science is not just a subject. It is a lifelong journey of curiosity and discovery. These 200+ quiz questions spanning biology, chemistry, physics, space, and technology give kids a fun and effective way to strengthen their knowledge. Regular quizzing builds confidence, sharpens critical thinking, and makes learning truly enjoyable.\u00a0<\/span><\/p>\n

For students at <\/span>Delhi Public School Gurugram<\/a>, this spirit of inquiry aligns perfectly with the school’s vision of nurturing curious, confident, and future-ready young minds<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

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