Science Olympiad Practice Test 1 — NSO-style (Class 4)

Q4. Meera walks 5 m towards the north. She turns right and walks 3 m. She turns right again and walks 5 m. Where is she now from her starting point?

Q5. How many triangles are there in this figure?

Q6. Look at this food chain. Which living thing in it eats only plants?

Q7. Which part of a plant carries water from the roots to the leaves?

Q8. Plants take in air and give out water vapour through tiny openings on their leaves. What are these openings called?

Q9. Which of these things is biodegradable (can be broken down by tiny living things in the soil)?

Q10. Which of these plants catches and digests insects?

Q11. The seeds of which plant are light and hairy, so that they are carried far away by the wind?

Q12. Rahul kept some bean seeds on wet cotton wool in a warm room. The seeds sprouted in a few days. Which of these was not needed for the seeds to sprout?

Q13. Which teeth are mainly used for tearing food?

Q14. How many milk teeth does a child usually have?

Q15. In which part of the body is most of the digested food absorbed into the blood?

Q16. Sameer's gums often bleed. His doctor tells him to eat more oranges, lemons and amlas. Which disease is caused by too little vitamin C?

Q17. Which of these foods is rich in proteins (body-building food)?

Q18. Which part of the skeleton protects the heart and the lungs?

Q19. Which of these animals breathes through gills?

Q20. Which of these animals eats both plants and animals (is an omnivore)?

Q21. Which bird has a strong, hooked beak for tearing meat?

Q22. Which of these animals lays eggs?

Q23. Why can we see the Moon shining at night?

Q24. The diagram shows how water changes its state. Which arrow shows condensation?

Q25. Alum is often added to a bucket of muddy water. Why is it added?

Q26. Which gas is present in the largest amount in the air around us?

Q27. Which instrument is used to measure the amount of rainfall?

Q28. Through which of these can we see things clearly (it is transparent)?

Q29. Priya touches a hot pan by mistake and gets a small burn on her finger. What is the best first thing to do?

Q30. What causes day and night on the Earth?

Q31. Anu places three pots with the same kind of seedling side by side.
Pot 1: kept in sunlight and watered every day.
Pot 2: kept in a dark cupboard and watered every day.
Pot 3: kept in sunlight but not watered.
After two weeks, which comparison is a fair test to find out whether plants need sunlight?

Q32. Two equal amounts of water are left in the same sunny place. One is poured into a wide plate and the other into a narrow open bottle. Which statement is correct?

Q33. In a forest, deer eat grass and tigers eat deer. If hunters kill most of the tigers, what is most likely to happen first?

Q34. A tap leaks 1 drop of water every second. 20 drops make 1 mL of water. How much water is wasted in one full day?

Q35. Cooking pans are usually made of metal, but their handles are often made of plastic or wood. What is the best reason?