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1. What is a mirage?
2. What is Doppler effect?
3. When is the Sun nearest to the Earth?
4. Why is Einstein famous?
5. What is the greatest distance one can see?
6. When will man land on the another planet?
7. Why is Newton famous?
8. Why oil and water not mix?
9. What is a star?
10. What is the Milky Way?
11. What makes mirror reflect?
12. Where was the world before it was made?
13. Where do shadows go?
14. Why do objects appear reversed in the mirror?
15. Why does an astronaut need space suit?
16. When is Halley's comet next expected?
17. What are meteorites?
18. Why does a pencil "bend" when it is put in water?
19. Where does candle wax go when a candle burns?
20. What are sunspots?
21. Why is Uranium important?
22. Why do some liquids burn?
23. What is liquid air?
24. When does an atom split?
25. Why does a satellite remain in orbit?
26. What are rings of Saturn?
27. Why is radioactive dangerous?
28. What makes energy?
29. What is fire?
30. What is light year?
31. When is man in the moon?