Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 426 · 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.🎈 Why does the balloon rocket move along the string? (a) the straw is heavy (b) a magnet pulls it (c) escaping air pushes it (d) the string pulls it
2. 2.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we keep it the same (b) we measure it (c) we change it
3. 3.🚀 Which of these goes forward? (a) air from the balloon (b) gas from the rocket (c) the balloon (d) water a swimmer pushes
4. 4.🧺 Do we need a battery cell for the balloon rocket? (a) not needed (b) needed
5. 5.🛟 Which is a safe rule for the balloon rocket? (a) aim it at your friend (b) blow it till it bursts (c) keep it away from faces (d) put string round a neck
6. 6.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) a balloon (c) sticky tape (d) a magnet
7. 7.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we keep it the same (b) we measure it (c) we change it
8. 8.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a mirror (b) a long string (c) two chairs (d) a balloon
9. 9.🚀 Which of these goes backward? (a) the balloon (b) the rowing boat (c) water a swimmer pushes (d) the swimmer
10. 10.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is what we measure. (a) False (b) True
11. 11.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a long string (c) a drinking straw (d) a mirror
12. 12.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
13. 13.True or false: a balloon is not needed for the balloon rocket. (a) False (b) True
14. 14.🚀 Which of these goes backward? (a) the rowing boat (b) the balloon (c) water from the oars (d) the rocket
15. 15.True or false: the rowing boat goes backward. (a) False (b) True
16. 16.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) a drinking straw (c) yeast (d) a magnet
17. 17.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the slope of the string (b) distance it travels (c) the same straw (d) how big we blow it
18. 18.🧺 Do we need vinegar for the balloon rocket? (a) not needed (b) needed
19. 19.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) a mirror (c) a magnet (d) sticky tape
20. 20.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a drinking straw (c) yeast (d) a long string
21. 21.🔮 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
22. 22.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) backward (b) forward (c) straight down (d) it stays still
23. 23.🔮 Predict: you blow the balloon up only a little. What happens? (a) it flies off the string (b) it goes much farther (c) it turns into a kite (d) it goes less far
24. 24.🧺 Do we need a balloon for the balloon rocket? (a) needed (b) not needed
25. 25.🎈 When does the balloon rocket stop? (a) when it gets cold (b) when it turns blue (c) it never stops (d) when the air runs out
26. 26.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) vinegar (c) two chairs (d) yeast
27. 27.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward
28. 28.🧺 Do we need sticky tape for the balloon rocket? (a) not needed (b) needed
29. 29.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the slope of the string (b) the same tape (c) distance it travels (d) the same straw
30. 30.True or false: a balloon is needed for the balloon rocket. (a) False (b) True
31. 31.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is the one thing we change. (a) True (b) False
32. 32.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) chew them (c) throw them away safely (d) keep them in your mouth
33. 33.True or false: vinegar is needed for the balloon rocket. (a) False (b) True
34. 34.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) turmeric powder (c) a long string (d) a drinking straw
35. 35.⚖️ 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
36. 36.True or false: sticky tape is needed for the balloon rocket. (a) True (b) False
37. 37.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes forward (b) goes backward
38. 38.True or false: a magnet is needed for the balloon rocket. (a) True (b) False
39. 39.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes backward (b) goes forward
40. 40.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) how big we blow it (b) distance it travels (c) the same straw

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