Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 205 · 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: you blow the balloon up only a little. What happens? (a) it flies off the string (b) it goes much farther (c) it goes less far (d) it turns into a kite
2. 2.🛟 Why should you not over-blow the balloon? (a) it changes colour (b) it gets too heavy (c) it turns into a kite (d) it can pop loudly
3. 3.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same straw (b) how big we blow it (c) the same tape (d) the same string
4. 4.🧺 Do we need a drinking straw for the balloon rocket? (a) needed (b) not needed
5. 5.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) a mirror (c) a balloon (d) yeast
6. 6.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a drinking straw (c) vinegar (d) two chairs
7. 7.🎈 Why does the balloon rocket move along the string? (a) escaping air pushes it (b) the straw is heavy (c) a magnet pulls it (d) the string pulls it
8. 8.⚖️ 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
9. 9.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) a mirror (c) a balloon (d) two chairs
10. 10.🛟 Which is a safe rule for the balloon rocket? (a) blow it till it bursts (b) aim it at your friend (c) put string round a neck (d) keep it away from faces
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we keep it the same (b) we change it (c) we measure it
12. 12.🔮 Predict: the string slopes uphill. What happens? (a) it travels less far (b) it goes backward first (c) it speeds up (d) it travels farther
13. 13.🧺 Do we need turmeric powder for the balloon rocket? (a) not needed (b) needed
14. 14.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is what we measure. (a) True (b) False
15. 15.True or false: air from the balloon goes backward. (a) True (b) False
16. 16.True or false: sticky tape is needed for the balloon rocket. (a) False (b) True
17. 17.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes forward (b) goes backward
18. 18.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a long string (c) a balloon (d) turmeric powder
19. 19.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) less friction (b) it goes faster (c) no change at all (d) more friction, less far
20. 20.True or false: a long string is needed for the balloon rocket. (a) False (b) True
21. 21.⚖️ 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) True (b) False
22. 22.🧺 Do we need yeast for the balloon rocket? (a) not needed (b) needed
23. 23.🎈 What is the job of the straw on the string? (a) it holds water (b) it makes it heavier (c) it blows air in (d) it guides the balloon
24. 24.⚖️ 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 string
25. 25.True or false: the swimmer goes forward. (a) False (b) True
26. 26.🎈 When does the balloon rocket stop? (a) when it turns blue (b) when the air runs out (c) it never stops (d) when it gets cold
27. 27.True or false: the balloon goes backward. (a) True (b) False
28. 28.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
29. 29.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
30. 30.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) a balloon (c) a magnet (d) a long string
31. 31.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) keep them in your mouth (c) throw them away safely (d) chew them
32. 32.🧺 Do we need a mirror for the balloon rocket? (a) not needed (b) needed
33. 33.⚖️ 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 keep it the same (c) we measure it
34. 34.True or false: vinegar is needed for the balloon rocket. (a) True (b) False
35. 35.True or false: a magnet is needed for the balloon rocket. (a) True (b) False
36. 36.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) distance it travels (b) the slope of the string (c) the same tape (d) how big we blow it
37. 37.🚀 In “push back, move forward”, which way does the rocket go? (a) goes backward (b) goes forward
38. 38.🚀 Which of these goes backward? (a) the rocket (b) the swimmer (c) water a swimmer pushes (d) the balloon
39. 39.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the same tape (b) how big we blow it (c) distance it travels
40. 40.True or false: water from the oars goes forward. (a) True (b) False

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