Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 428 · 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? Which of these is the one thing we change? (a) the same string (b) the same straw (c) how big we blow it (d) distance it travels
2. 2.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes backward (b) goes forward
3. 3.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a balloon (c) turmeric powder (d) two chairs
4. 4.⚖️ 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
5. 5.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a fridge magnet (b) a sundial (c) a balloon rocket (d) a mirror
6. 6.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a mirror (c) a balloon (d) a drinking straw
7. 7.🎈 What is the job of the straw on the string? (a) it blows air in (b) it makes it heavier (c) it holds water (d) it guides the balloon
8. 8.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
9. 9.🚀 In “push back, move forward”, which way does the rocket go? (a) goes backward (b) goes forward
10. 10.True or false: the rocket goes backward. (a) False (b) True
11. 11.🧺 Do we need a long string for the balloon rocket? (a) not needed (b) needed
12. 12.⚖️ 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 straw (c) distance it travels
13. 13.🚀 Which of these goes backward? (a) the balloon (b) the swimmer (c) the rocket (d) water a swimmer pushes
14. 14.🛟 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
15. 15.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it speeds up (c) it travels less far (d) it travels farther
16. 16.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a long string (c) yeast (d) a drinking straw
17. 17.⚖️ 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
18. 18.🧺 Do we need yeast for the balloon rocket? (a) not needed (b) needed
19. 19.True or false: water a swimmer pushes goes backward. (a) False (b) True
20. 20.True or false: a long string is not needed for the balloon rocket. (a) True (b) False
21. 21.True or false: gas from the rocket goes forward. (a) False (b) True
22. 22.🛟 Which is a safe rule for the balloon rocket? (a) put string round a neck (b) blow it till it bursts (c) keep it away from faces (d) aim it at your friend
23. 23.⚖️ 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
24. 24.True or false: air from the balloon goes forward. (a) False (b) True
25. 25.🚀 Which of these goes backward? (a) the swimmer (b) the rowing boat (c) the balloon (d) air from the balloon
26. 26.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) less friction (b) no change at all (c) more friction, less far (d) it goes faster
27. 27.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it turns into a kite (c) it flies off the string (d) it goes less far
28. 28.True or false: a balloon is needed for the balloon rocket. (a) False (b) True
29. 29.🧺 Which of these is not needed for the balloon rocket? (a) a magnet (b) a long string (c) a balloon (d) a drinking straw
30. 30.🎈 Why does the balloon rocket move along the string? (a) the string pulls it (b) the straw is heavy (c) a magnet pulls it (d) escaping air pushes it
31. 31.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is what we measure. (a) True (b) False
32. 32.True or false: two chairs is not needed for the balloon rocket. (a) True (b) False
33. 33.True or false: the swimmer goes backward. (a) False (b) True
34. 34.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes forward (b) goes backward
35. 35.True or false: the rowing boat goes forward. (a) True (b) False
36. 36.True or false: water a swimmer pushes goes forward. (a) True (b) False
37. 37.True or false: vinegar is needed for the balloon rocket. (a) True (b) False
38. 38.⚖️ 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
39. 39.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
40. 40.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) a balloon (c) a long string (d) vinegar

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