Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 765 · 40 questions

What you do (Push back, move forward): 1. Thread the string through the straw and tie it tightly between two chairs. 2. Blow up the balloon (not too much) and pinch its neck shut. 3. Tape the balloon to the straw, neck pointing backward. 4. Let go, measure how far it goes, and keep it away from faces.

1. 1.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) more friction, less far (b) it goes faster (c) no change at all (d) less friction
2. 2.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we change it (b) we measure it (c) we keep it the same
3. 3.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) vinegar (b) a drinking straw (c) two chairs (d) a long string
4. 4.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we change it (b) we keep it the same (c) we measure it
5. 5.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is what we measure. (a) True (b) False
6. 6.True or false: the rowing boat goes backward. (a) True (b) False
7. 7.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) a mirror (c) sticky tape (d) a magnet
8. 8.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) backward (b) straight down (c) forward (d) it stays still
9. 9.🔮 Predict: you blow the balloon up only a little. What happens? (a) it turns into a kite (b) it goes much farther (c) it goes less far (d) it flies off the string
10. 10.🎈 Why does the balloon rocket move along the string? (a) escaping air pushes it (b) the straw is heavy (c) a magnet pulls it (d) the string pulls it
11. 11.True or false: vinegar is not needed for the balloon rocket. (a) False (b) True
12. 12.🛟 Which is a safe rule for the balloon rocket? (a) blow it till it bursts (b) aim it at your friend (c) keep it away from faces (d) put string round a neck
13. 13.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) sticky tape (c) a long string (d) a magnet
14. 14.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) distance it travels (b) how big we blow it (c) the same tape (d) the slope of the string
15. 15.🧺 Which of these is not needed for the balloon rocket? (a) a battery cell (b) a long string (c) sticky tape (d) a drinking straw
16. 16.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes forward (b) goes backward
17. 17.🚀 Which of these goes backward? (a) the rowing boat (b) the swimmer (c) the rocket (d) water a swimmer pushes
18. 18.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) distance it travels (b) the same tape (c) the same straw (d) how big we blow it
19. 19.🚀 Which of these goes forward? (a) air from the balloon (b) the swimmer (c) gas from the rocket (d) water a swimmer pushes
20. 20.🧺 Do we need sticky tape for the balloon rocket? (a) needed (b) not needed
21. 21.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it goes backward first (c) it travels less far (d) it speeds up
22. 22.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we change it (b) we keep it the same (c) we measure it
23. 23.True or false: the balloon goes backward. (a) True (b) False
24. 24.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) how big we blow it (c) the same straw
25. 25.🚀 Which of these goes forward? (a) gas from the rocket (b) the balloon (c) air from the balloon (d) water from the oars
26. 26.🧺 Do we need a magnet for the balloon rocket? (a) not needed (b) needed
27. 27.True or false: a balloon is needed for the balloon rocket. (a) True (b) False
28. 28.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the same tape (b) how big we blow it (c) distance it travels
29. 29.🛟 Why should you not over-blow the balloon? (a) it can pop loudly (b) it turns into a kite (c) it changes colour (d) it gets too heavy
30. 30.True or false: a battery cell is needed for the balloon rocket. (a) False (b) True
31. 31.🧺 Do we need a long string for the balloon rocket? (a) not needed (b) needed
32. 32.🧺 Do we need turmeric powder for the balloon rocket? (a) not needed (b) needed
33. 33.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is what we measure. (a) False (b) True
34. 34.True or false: air from the balloon goes backward. (a) False (b) True
35. 35.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we change it (b) we measure it (c) we keep it the same
36. 36.True or false: a magnet is not needed for the balloon rocket. (a) False (b) True
37. 37.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) sticky tape (c) a long string (d) a magnet
38. 38.True or false: a drinking straw is not needed for the balloon rocket. (a) False (b) True
39. 39.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is the one thing we change. (a) False (b) True
40. 40.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a long string (c) a drinking straw (d) a mirror

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