Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 103 · 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.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is kept the same. (a) True (b) False
2. 2.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it travels farther (c) it goes backward first (d) it travels less far
3. 3.True or false: a mirror is not needed for the balloon rocket. (a) False (b) True
4. 4.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a drinking straw (c) sticky tape (d) yeast
5. 5.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
6. 6.⚖️ 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 keep it the same (c) we measure it
7. 7.⚖️ 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
8. 8.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) how big we blow it (b) the same straw (c) the same tape (d) distance it travels
9. 9.⚖️ 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
10. 10.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) a balloon (c) a battery cell (d) a mirror
11. 11.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) it goes faster (b) more friction, less far (c) no change at all (d) less friction
12. 12.True or false: sticky tape is not needed for the balloon rocket. (a) False (b) True
13. 13.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes backward (b) goes forward
14. 14.🔮 Predict: you blow the balloon up only a little. What happens? (a) it flies off the string (b) it turns into a kite (c) it goes much farther (d) it goes less far
15. 15.⚖️ 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
16. 16.🛟 Which is a safe rule for the balloon rocket? (a) blow it till it bursts (b) put string round a neck (c) aim it at your friend (d) keep it away from faces
17. 17.🚀 Which of these goes backward? (a) the rocket (b) gas from the rocket (c) the balloon (d) the rowing boat
18. 18.🎈 Why does the balloon rocket move along the string? (a) the string pulls it (b) escaping air pushes it (c) the straw is heavy (d) a magnet pulls it
19. 19.🎈 What is the job of the straw on the string? (a) it holds water (b) it blows air in (c) it guides the balloon (d) it makes it heavier
20. 20.True or false: a magnet is needed for the balloon rocket. (a) False (b) True
21. 21.🚀 Which of these goes forward? (a) water a swimmer pushes (b) gas from the rocket (c) air from the balloon (d) the rocket
22. 22.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) how big we blow it (b) the same string (c) the same tape (d) the same straw
23. 23.🚀 Which of these goes backward? (a) the swimmer (b) the rocket (c) the balloon (d) water from the oars
24. 24.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) forward (b) straight down (c) it stays still (d) backward
25. 25.⚖️ 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
26. 26.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) turmeric powder (c) two chairs (d) a long string
27. 27.True or false: the swimmer goes backward. (a) True (b) False
28. 28.True or false: vinegar is not needed for the balloon rocket. (a) False (b) True
29. 29.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) two chairs (c) a mirror (d) a magnet
30. 30.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we keep it the same (b) we change it (c) we measure it
31. 31.True or false: air from the balloon goes forward. (a) False (b) True
32. 32.🧺 Which of these is needed for the balloon rocket? (a) a long string (b) yeast (c) a battery cell (d) a magnet
33. 33.True or false: the balloon goes backward. (a) True (b) False
34. 34.🧺 Do we need a drinking straw for the balloon rocket? (a) needed (b) not needed
35. 35.⚖️ 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
36. 36.🚀 Which of these goes backward? (a) air from the balloon (b) the rowing boat (c) the swimmer (d) the balloon
37. 37.🚀 Which of these goes forward? (a) water a swimmer pushes (b) gas from the rocket (c) the rowing boat (d) air from the balloon
38. 38.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
39. 39.🚀 Which of these goes forward? (a) the balloon (b) gas from the rocket (c) water from the oars (d) air from the balloon
40. 40.🧺 Do we need a battery cell for the balloon rocket? (a) needed (b) not needed

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