Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 834 · 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.🧺 Do we need a long string for the balloon rocket? (a) not needed (b) needed
2. 2.🎈 What is the job of the straw on the string? (a) it blows air in (b) it holds water (c) it guides the balloon (d) it makes it heavier
3. 3.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it travels farther (c) it travels less far (d) it speeds up
4. 4.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we change it (b) we measure it (c) we keep it the same
5. 5.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we measure it (b) we change it (c) we keep it the same
6. 6.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) a magnet (c) two chairs (d) vinegar
7. 7.🎈 When does the balloon rocket stop? (a) when it gets cold (b) it never stops (c) when it turns blue (d) when the air runs out
8. 8.🔮 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
9. 9.True or false: the swimmer goes backward. (a) False (b) True
10. 10.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we keep it the same (b) we measure it (c) we change it
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same straw (b) the slope of the string (c) distance it travels (d) how big we blow it
12. 12.⚖️ 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) how big we blow it (c) distance it travels
13. 13.🧺 Which of these is needed for the balloon rocket? (a) sticky tape (b) a magnet (c) vinegar (d) yeast
14. 14.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a magnet (c) sticky tape (d) a long string
15. 15.🛟 Which is a safe rule for the balloon rocket? (a) aim it at your friend (b) keep it away from faces (c) put string round a neck (d) blow it till it bursts
16. 16.⚖️ 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
17. 17.🚀 Which of these goes backward? (a) air from the balloon (b) the rowing boat (c) the swimmer (d) the rocket
18. 18.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes forward (b) goes backward
19. 19.🔮 Predict: you blow the balloon up only a little. What happens? (a) it flies off the string (b) it goes less far (c) it turns into a kite (d) it goes much farther
20. 20.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) a balloon (c) turmeric powder (d) a magnet
21. 21.True or false: the rowing boat goes backward. (a) False (b) True
22. 22.⚖️ 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) the same tape (c) distance it travels
23. 23.⚖️ 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 slope of the string (c) the same string (d) the same tape
24. 24.🚀 Which of these goes forward? (a) gas from the rocket (b) air from the balloon (c) water a swimmer pushes (d) the swimmer
25. 25.🚀 Which of these goes forward? (a) the rowing boat (b) air from the balloon (c) water from the oars (d) water a swimmer pushes
26. 26.🚀 Which of these goes forward? (a) gas from the rocket (b) water from the oars (c) water a swimmer pushes (d) the rocket
27. 27.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) a drinking straw (c) a mirror (d) a battery cell
28. 28.⚖️ 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
29. 29.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a fridge magnet (b) a mirror (c) a sundial (d) a balloon rocket
30. 30.🎈 Why does the balloon rocket move along the string? (a) the straw is heavy (b) a magnet pulls it (c) the string pulls it (d) escaping air pushes it
31. 31.True or false: vinegar is needed for the balloon rocket. (a) False (b) True
32. 32.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes forward (b) goes backward
33. 33.🚀 In “push back, move forward”, which way does the balloon go? (a) goes forward (b) goes backward
34. 34.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a balloon (c) vinegar (d) a long string
35. 35.True or false: vinegar is not needed for the balloon rocket. (a) False (b) True
36. 36.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a mirror (b) sticky tape (c) two chairs (d) a long string
37. 37.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
38. 38.True or false: water from the oars goes backward. (a) False (b) True
39. 39.🚀 Which of these goes forward? (a) air from the balloon (b) water from the oars (c) the balloon (d) water a swimmer pushes
40. 40.True or false: sticky tape is needed for the balloon rocket. (a) True (b) False

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