Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 435 · 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) more friction, less far (d) no change at all
2. 2.🛟 What should you do with popped balloon pieces? (a) chew them (b) keep them in your mouth (c) throw them away safely (d) give them to a baby
3. 3.🚀 Which of these goes backward? (a) the swimmer (b) the balloon (c) water a swimmer pushes (d) the rocket
4. 4.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a balloon (c) yeast (d) a drinking straw
5. 5.True or false: air from the balloon goes backward. (a) True (b) False
6. 6.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes backward (b) goes forward
7. 7.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we keep it the same (b) we measure it (c) we change it
8. 8.⚖️ 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
9. 9.🎈 When does the balloon rocket stop? (a) when it gets cold (b) it never stops (c) when the air runs out (d) when it turns blue
10. 10.True or false: the swimmer goes backward. (a) True (b) False
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we change it (b) we keep it the same (c) we measure it
12. 12.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) turmeric powder (c) a long string (d) a magnet
13. 13.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it travels farther (c) it goes backward first (d) it travels less far
14. 14.True or false: gas from the rocket goes forward. (a) False (b) True
15. 15.🧺 Do we need turmeric powder for the balloon rocket? (a) needed (b) not needed
16. 16.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes forward (b) goes backward
17. 17.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) how big we blow it (b) the same string (c) the slope of the string (d) distance it travels
18. 18.⚖️ 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) the slope of the string (d) distance it travels
19. 19.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) a mirror (c) turmeric powder (d) a drinking straw
20. 20.🚀 Which of these goes forward? (a) water a swimmer pushes (b) air from the balloon (c) gas from the rocket (d) the rowing boat
21. 21.🚀 Which of these goes forward? (a) the swimmer (b) air from the balloon (c) gas from the rocket (d) water from the oars
22. 22.🧺 Do we need a mirror for the balloon rocket? (a) not needed (b) needed
23. 23.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) forward (b) straight down (c) backward (d) it stays still
24. 24.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we change it (b) we keep it the same (c) we measure it
25. 25.🔮 Predict: you blow the balloon up only a little. What happens? (a) it flies off the string (b) it turns into a kite (c) it goes much farther (d) it goes less far
26. 26.🎈 Why does the balloon rocket move along the string? (a) the straw is heavy (b) the string pulls it (c) a magnet pulls it (d) escaping air pushes it
27. 27.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) yeast (c) a drinking straw (d) a balloon
28. 28.🛟 Which is a safe rule for the balloon rocket? (a) aim it at your friend (b) blow it till it bursts (c) put string round a neck (d) keep it away from faces
29. 29.🎈 What is the job of the straw on the string? (a) it guides the balloon (b) it blows air in (c) it holds water (d) it makes it heavier
30. 30.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes forward (b) goes backward
31. 31.True or false: water from the oars goes backward. (a) True (b) False
32. 32.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) two chairs (c) sticky tape (d) vinegar
33. 33.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
34. 34.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a magnet (b) sticky tape (c) a balloon (d) two chairs
35. 35.True or false: the balloon goes forward. (a) True (b) False
36. 36.True or false: the rocket goes backward. (a) False (b) True
37. 37.True or false: sticky tape is not needed for the balloon rocket. (a) False (b) True
38. 38.True or false: water a swimmer pushes goes forward. (a) False (b) True
39. 39.⚖️ 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 measure it (c) we change it
40. 40.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we measure it (b) we change it (c) we keep it the same

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