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30 easy science questions covering biology, physics, chemistry and nature.
1. What is the largest organ of the human body?
💡 The skin is the largest organ covering about 2 square meters and weighing 3 to 4 kg.
2. What is the name of the galaxy we live in?
💡 Our solar system is located in the Milky Way galaxy — a barred spiral galaxy containing 100-400 billion stars.
3. What do we call the change from liquid to gas?
💡 Evaporation happens when a liquid is heated and turns into a gas or vapor.
4. What gas do humans breathe out?
💡 When we breathe in oxygen our body uses it to produce energy and we breathe out carbon dioxide as waste.
5. What force keeps us on the ground?
💡 Gravity is the force that pulls all objects with mass toward each other. Earth's gravity keeps us on the ground.
6. How many legs does an insect have?
💡 All insects have exactly 6 legs. Spiders have 8 legs making them arachnids not insects.
7. What do we call the process by which a caterpillar becomes a butterfly?
💡 Metamorphosis is the transformation from caterpillar to butterfly through a chrysalis stage.
8. What is the center of an atom called?
💡 The nucleus is the dense center of an atom containing protons and neutrons. Electrons orbit around it.
9. What do plants need from the sun to make food?
💡 Plants use sunlight to make their own food through photosynthesis using chlorophyll in their leaves.
10. What do we call animals that are active at night?
💡 Nocturnal animals are active at night and sleep during the day. Examples include owls bats and foxes.