Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 466 · 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.🎈 What is the job of the straw on the string? (a) it holds water (b) it blows air in (c) it makes it heavier (d) it guides the balloon
2. 2.🔮 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
3. 3.🧺 Do we need two chairs for the balloon rocket? (a) not needed (b) needed
4. 4.🚀 Which of these goes backward? (a) the rowing boat (b) water from the oars (c) the balloon (d) the rocket
5. 5.🛟 Which is a safe rule for the balloon rocket? (a) blow it till it bursts (b) put string round a neck (c) aim it at your friend (d) keep it away from faces
6. 6.🧺 Do we need a mirror for the balloon rocket? (a) not needed (b) needed
7. 7.⚖️ 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 slope of the string (c) distance it travels (d) the same straw
8. 8.🚀 Which of these goes forward? (a) air from the balloon (b) water from the oars (c) the rowing boat (d) water a swimmer pushes
9. 9.🎈 When does the balloon rocket stop? (a) when it gets cold (b) it never stops (c) when it turns blue (d) when the air runs out
10. 10.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) backward (b) straight down (c) forward (d) it stays still
11. 11.🔮 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
12. 12.🎈 Why does the balloon rocket move along the string? (a) the string pulls it (b) a magnet pulls it (c) escaping air pushes it (d) the straw is heavy
13. 13.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we measure it (b) we change it (c) we keep it the same
14. 14.🧺 Do we need a battery cell for the balloon rocket? (a) needed (b) not needed
15. 15.⚖️ 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 change it (c) we measure it
16. 16.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a drinking straw (c) vinegar (d) sticky tape
17. 17.🚀 Which of these goes backward? (a) the swimmer (b) air from the balloon (c) the rowing boat (d) the rocket
18. 18.🚀 Which of these goes forward? (a) water from the oars (b) gas from the rocket (c) the balloon (d) air from the balloon
19. 19.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) no change at all (b) less friction (c) it goes faster (d) more friction, less far
20. 20.True or false: yeast is not needed for the balloon rocket. (a) True (b) False
21. 21.True or false: a long string is not needed for the balloon rocket. (a) False (b) True
22. 22.True or false: water from the oars goes forward. (a) True (b) False
23. 23.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) a battery cell (c) a magnet (d) a drinking straw
24. 24.True or false: vinegar is needed for the balloon rocket. (a) False (b) True
25. 25.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) a long string (c) a magnet (d) vinegar
26. 26.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward
27. 27.⚖️ 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
28. 28.🧺 Do we need turmeric powder for the balloon rocket? (a) needed (b) not needed
29. 29.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) sticky tape (c) a battery cell (d) two chairs
30. 30.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a magnet (b) sticky tape (c) a drinking straw (d) a long string
31. 31.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a battery cell (c) a drinking straw (d) two chairs
32. 32.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) yeast (c) a drinking straw (d) a balloon
33. 33.🚀 Which of these goes forward? (a) gas from the rocket (b) water from the oars (c) water a swimmer pushes (d) the swimmer
34. 34.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) two chairs (c) a mirror (d) turmeric powder
35. 35.True or false: sticky tape is not needed for the balloon rocket. (a) True (b) False
36. 36.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes backward (b) goes forward
37. 37.True or false: the rowing boat goes forward. (a) True (b) False
38. 38.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is kept the same. (a) True (b) False
39. 39.True or false: air from the balloon goes backward. (a) True (b) False
40. 40.True or false: water from the oars goes backward. (a) False (b) True

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