Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 990 · 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 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
2. 2.True or false: yeast is needed for the balloon rocket. (a) False (b) True
3. 3.🚀 Which of these goes backward? (a) the balloon (b) the rowing boat (c) the rocket (d) water a swimmer pushes
4. 4.True or false: the balloon goes backward. (a) False (b) True
5. 5.True or false: water a swimmer pushes goes forward. (a) False (b) True
6. 6.⚖️ 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 straw (c) distance it travels (d) the same tape
7. 7.True or false: water from the oars goes backward. (a) False (b) True
8. 8.🔮 Predict: you blow the balloon up only a little. What happens? (a) it turns into a kite (b) it goes less far (c) it flies off the string (d) it goes much farther
9. 9.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) yeast (c) a long string (d) a magnet
10. 10.⚖️ 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 string (c) distance it travels
11. 11.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a drinking straw (c) sticky tape (d) a mirror
12. 12.🎈 Why does the balloon rocket move along the string? (a) escaping air pushes it (b) the string pulls it (c) the straw is heavy (d) a magnet pulls it
13. 13.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
14. 14.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it goes backward first (c) it travels less far (d) it travels farther
15. 15.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we change it (b) we measure it (c) we keep it the same
16. 16.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) backward (b) straight down (c) it stays still (d) forward
17. 17.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it gets too heavy (c) it can pop loudly (d) it changes colour
18. 18.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes backward (b) goes forward
19. 19.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is what we measure. (a) False (b) True
20. 20.🚀 Which of these goes backward? (a) the balloon (b) the swimmer (c) gas from the rocket (d) the rocket
21. 21.True or false: vinegar is needed for the balloon rocket. (a) True (b) False
22. 22.🎈 What is the job of the straw on the string? (a) it makes it heavier (b) it guides the balloon (c) it holds water (d) it blows air in
23. 23.True or false: a drinking straw is needed for the balloon rocket. (a) False (b) True
24. 24.⚖️ 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 string (d) the slope of the string
25. 25.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
26. 26.🧺 Do we need a long string for the balloon rocket? (a) not needed (b) needed
27. 27.🛟 Which is a safe rule for the balloon rocket? (a) blow it till it bursts (b) put string round a neck (c) keep it away from faces (d) aim it at your friend
28. 28.⚖️ 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
29. 29.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) yeast (c) a balloon (d) sticky tape
30. 30.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes backward (b) goes forward
31. 31.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) sticky tape (c) turmeric powder (d) a drinking straw
32. 32.⚖️ 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
33. 33.True or false: a long string is needed for the balloon rocket. (a) True (b) False
34. 34.🧺 Do we need two chairs for the balloon rocket? (a) not needed (b) needed
35. 35.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is what we measure. (a) True (b) False
36. 36.True or false: a mirror is not needed for the balloon rocket. (a) True (b) False
37. 37.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a magnet (b) a balloon (c) a drinking straw (d) a long string
38. 38.True or false: yeast is not needed for the balloon rocket. (a) True (b) False
39. 39.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) vinegar (c) turmeric powder (d) two chairs
40. 40.🚀 Which of these goes forward? (a) air from the balloon (b) gas from the rocket (c) water a swimmer pushes (d) the balloon

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