Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 200 · 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) no change at all (b) it goes faster (c) more friction, less far (d) less friction
2. 2.🧺 Which of these is needed for the balloon rocket? (a) a balloon (b) a magnet (c) turmeric powder (d) vinegar
3. 3.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we measure it (b) we change it (c) we keep it the same
4. 4.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a magnet (b) a balloon (c) a long string (d) a drinking straw
5. 5.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a mirror (b) a sundial (c) a balloon rocket (d) a fridge magnet
6. 6.True or false: the rowing boat goes backward. (a) False (b) True
7. 7.True or false: a long string is not needed for the balloon rocket. (a) True (b) False
8. 8.🧺 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) vinegar
9. 9.🧺 Do we need yeast for the balloon rocket? (a) not needed (b) needed
10. 10.🔮 Predict: the string slopes uphill. What happens? (a) it travels less far (b) it speeds up (c) it travels farther (d) it goes backward first
11. 11.🧺 Which of these is not needed for the balloon rocket? (a) yeast (b) a drinking straw (c) a balloon (d) sticky tape
12. 12.🧺 Do we need vinegar for the balloon rocket? (a) not needed (b) needed
13. 13.🎈 Why does the balloon rocket move along the string? (a) the string pulls it (b) escaping air pushes it (c) a magnet pulls it (d) the straw is heavy
14. 14.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
15. 15.🎈 What is the job of the straw on the string? (a) it holds water (b) it guides the balloon (c) it blows air in (d) it makes it heavier
16. 16.True or false: a battery cell is needed for the balloon rocket. (a) False (b) True
17. 17.🧺 Do we need a mirror for the balloon rocket? (a) needed (b) not needed
18. 18.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we measure it (b) we keep it the same (c) we change it
19. 19.🚀 Which of these goes forward? (a) water from the oars (b) air from the balloon (c) gas from the rocket (d) the rowing boat
20. 20.True or false: two chairs is not needed for the balloon rocket. (a) True (b) False
21. 21.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we change it (b) we measure it (c) we keep it the same
22. 22.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) False (b) True
23. 23.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it changes colour (c) it can pop loudly (d) it gets too heavy
24. 24.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) aim it at your friend (c) blow it till it bursts (d) put string round a neck
25. 25.True or false: yeast is needed for the balloon rocket. (a) True (b) False
26. 26.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is the one thing we change. (a) False (b) True
27. 27.🔮 Predict: you blow the balloon up only a little. What happens? (a) it turns into a kite (b) it goes less far (c) it flies off the string (d) it goes much farther
28. 28.🧺 Which of these is not needed for the balloon rocket? (a) sticky tape (b) a balloon (c) a long string (d) turmeric powder
29. 29.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) a magnet (c) yeast (d) two chairs
30. 30.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same tape (b) how big we blow it (c) the same straw (d) the same string
31. 31.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is kept the same. (a) True (b) False
32. 32.🚀 Which of these goes forward? (a) water from the oars (b) water a swimmer pushes (c) air from the balloon (d) the rocket
33. 33.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) sticky tape (c) two chairs (d) turmeric powder
34. 34.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a balloon (c) a mirror (d) a drinking straw
35. 35.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes forward (b) goes backward
36. 36.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) straight down (b) backward (c) it stays still (d) forward
37. 37.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) a magnet (c) a drinking straw (d) a mirror
38. 38.True or false: turmeric powder is needed for the balloon rocket. (a) True (b) False
39. 39.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) a magnet (c) a long string (d) sticky tape
40. 40.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the slope of the string (b) distance it travels (c) how big we blow it

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