Balloon Rocket STEM Worksheet

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

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