1. Which of the following is a source of light?
Explanation: The Sun is a natural source of light, providing light and energy to Earth.
Report for correction2. What is the main part of a plant that absorbs water?
Explanation: Roots absorb water and nutrients from the soil to help the plant grow.
Report for correction3. What do we call the changing of water into vapor?
Explanation: Evaporation is the process where water turns into vapor due to heat.
Report for correction4. Which of the following materials can float in water?
Explanation: A wooden stick is less dense than water, which allows it to float.
Report for correction5. What is the basic unit of life?
Explanation: The cell is the smallest unit of life and is found in all living things.
Report for correction6. Which force pulls objects toward the Earth?
Explanation: Gravity is the force that pulls objects toward the center of the Earth.
Report for correction7. Which of the following animals is a herbivore?
Explanation: A cow is a herbivore because it eats only plants.
Report for correction8. What form of energy is used to run a fan?
Explanation: A fan runs on electrical energy, which powers its motor to move the blades.
Report for correction9. Which planet is known as the Earth's twin?
Explanation: Venus is called Earth's twin because its size and structure are similar to Earth's.
Report for correction10. Which part of the human body helps in breathing?
Explanation: The lungs help in breathing by taking in oxygen and releasing carbon dioxide.
Report for correction11. Which of these objects is a good conductor of electricity?
Explanation: Copper is a good conductor of electricity because it allows electric current to pass through it easily.
Report for correction12. What is the boiling point of water?
Explanation: Water boils at 100 degrees Celsius at sea level.
Report for correction13. Which of these is a renewable source of energy?
Explanation: Wind is a renewable source of energy because it can be replenished naturally.
Report for correction14. Which of these is the hottest planet in our solar system?
Explanation: Venus is the hottest planet because of its thick atmosphere, which traps heat.
Report for correction15. What do plants produce during photosynthesis?
Explanation: Plants produce oxygen as a byproduct of photosynthesis.
Report for correction16. What is the state of matter of air?
Explanation: Air is a mixture of gases, primarily nitrogen and oxygen.
Report for correction17. What type of simple machine is a seesaw?
Explanation: A seesaw is a type of lever because it pivots around a fulcrum in the middle.
Report for correction18. What is the natural satellite of the Earth?
Explanation: The Moon is the Earth's natural satellite, orbiting the Earth.
Report for correction19. What is the function of the heart?
Explanation: The heart pumps blood throughout the body, supplying oxygen and nutrients.
Report for correction20. What type of energy is stored in food?
Explanation: Food contains chemical energy that is released when our body digests it.
Report for correction21. Which part of a plant helps it make food?
Explanation: The leaf contains chlorophyll, which helps in photosynthesis to make food for the plant.
Report for correction22. What is the main source of energy for all living things on Earth?
Explanation: The Sun is the primary source of energy for all living organisms on Earth.
Report for correction23. What do we call animals that eat both plants and meat?
Explanation: Omnivores are animals that eat both plants and animals.
Report for correction24. Which of the following is a man-made material?
Explanation: Plastic is a man-made material created through chemical processes.
Report for correction25. Which part of the plant produces seeds?
Explanation: Flowers produce seeds through pollination and fertilization.
Report for correction