Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 415 · 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 what we measure? (a) the same string (b) distance it travels (c) the same tape (d) how big we blow it
2. 2.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a long string (c) a drinking straw (d) a magnet
3. 3.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) keep them in your mouth (c) chew them (d) throw them away safely
4. 4.🚀 Which of these goes backward? (a) the rowing boat (b) the rocket (c) the swimmer (d) water from the oars
5. 5.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it turns into a kite (c) it changes colour (d) it can pop loudly
6. 6.True or false: the swimmer goes backward. (a) True (b) False
7. 7.True or false: air from the balloon goes backward. (a) False (b) True
8. 8.🧺 Which of these is needed for the balloon rocket? (a) a long string (b) turmeric powder (c) yeast (d) a mirror
9. 9.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it travels less far (c) it goes backward first (d) it travels farther
10. 10.🧺 Do we need yeast for the balloon rocket? (a) needed (b) not needed
11. 11.🎈 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
12. 12.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) it goes faster (b) less friction (c) no change at all (d) more friction, less far
13. 13.True or false: the rocket goes backward. (a) True (b) False
14. 14.🎈 What is the job of the straw on the string? (a) it makes it heavier (b) it blows air in (c) it holds water (d) it guides the balloon
15. 15.🚀 Which of these goes forward? (a) water from the oars (b) gas from the rocket (c) water a swimmer pushes (d) the swimmer
16. 16.🚀 Which of these goes backward? (a) gas from the rocket (b) the swimmer (c) the rocket (d) the rowing boat
17. 17.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes forward (b) goes backward
18. 18.True or false: yeast is not needed for the balloon rocket. (a) True (b) False
19. 19.True or false: water from the oars goes backward. (a) False (b) True
20. 20.True or false: the balloon goes backward. (a) True (b) False
21. 21.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) distance it travels (b) the same string (c) the same straw (d) how big we blow it
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) distance it travels (c) the slope of the string
23. 23.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is what we measure. (a) True (b) False
24. 24.True or false: gas from the rocket goes forward. (a) False (b) True
25. 25.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
26. 26.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a long string (c) a drinking straw (d) yeast
27. 27.🚀 In “push back, move forward”, which way does the rocket go? (a) goes backward (b) goes forward
28. 28.🎈 When does the balloon rocket stop? (a) when it turns blue (b) it never stops (c) when it gets cold (d) when the air runs out
29. 29.True or false: a magnet is not needed for the balloon rocket. (a) False (b) True
30. 30.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the same string (b) how big we blow it (c) distance it travels
31. 31.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes forward (b) goes backward
32. 32.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) turmeric powder (c) a balloon (d) a long string
33. 33.🧺 Do we need sticky tape for the balloon rocket? (a) needed (b) not needed
34. 34.True or false: the swimmer goes forward. (a) True (b) False
35. 35.True or false: vinegar is needed for the balloon rocket. (a) True (b) False
36. 36.🔮 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
37. 37.⚖️ 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
38. 38.True or false: gas from the rocket goes backward. (a) True (b) False
39. 39.⚖️ 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
40. 40.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) a mirror (c) two chairs (d) yeast

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