Q19. Why is it easier to row the boat if there is wind coming from behind you?


Q20. What is the difference between a Cyclone, Typhoon, and Hurricane?


Q21. What is a tornado?


Q22. Which regions of India are vulnerable to cyclones?


Q23. How does air move?


Q24. Explain why smoke always rises up?


Q25. Hold a strip of paper, 20 cm long and 3 cm wide, between your thumb and forefinger. Now blow over the paper. What do you think will happen to the paper? Give reason.


Q26. List some effective safety measures for cyclone.


Q27. Explain why holes are made in hanging banners and hoardings.


Q28. Why is it difficult to force the paper ball into the bottle?


Q29. What are monsoon winds?


Q30. Suggest two methods to find out wind direction at a given place.


Q31. ‘A bicycle tube overfilled with air may burst’. Give reason.


Q32. What is thunderstorm?


Last modified: Sunday, 6 January 2019, 5:11 PM