Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 294 · 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) it goes faster (b) more friction, less far (c) no change at all (d) less friction
2. 2.🧺 Do we need a battery cell for the balloon rocket? (a) needed (b) not needed
3. 3.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) it stays still (b) straight down (c) backward (d) forward
4. 4.🔮 Predict: you blow the balloon up only a little. What happens? (a) it flies off the string (b) it goes less far (c) it turns into a kite (d) it goes much farther
5. 5.⚖️ 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
6. 6.🛟 Why should you not over-blow the balloon? (a) it changes colour (b) it turns into a kite (c) it gets too heavy (d) it can pop loudly
7. 7.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is the one thing we change. (a) True (b) False
8. 8.🎈 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
9. 9.🧺 Which of these is not needed for the balloon rocket? (a) a mirror (b) a balloon (c) a drinking straw (d) sticky tape
10. 10.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is what we measure. (a) True (b) False
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we keep it the same (b) we change it (c) we measure it
12. 12.⚖️ 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) distance it travels (c) the same string (d) the same straw
13. 13.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we change it (b) we measure it (c) we keep it the same
14. 14.True or false: the rowing boat goes backward. (a) False (b) True
15. 15.🛟 Which is a safe rule for the balloon rocket? (a) put string round a neck (b) keep it away from faces (c) blow it till it bursts (d) aim it at your friend
16. 16.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes backward (b) goes forward
17. 17.🚀 Which of these goes forward? (a) the swimmer (b) air from the balloon (c) water a swimmer pushes (d) gas from the rocket
18. 18.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it speeds up (c) it travels farther (d) it travels less far
19. 19.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes forward (b) goes backward
20. 20.True or false: a magnet is needed for the balloon rocket. (a) False (b) True
21. 21.True or false: a drinking straw is needed for the balloon rocket. (a) False (b) True
22. 22.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes backward (b) goes forward
23. 23.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a drinking straw (c) sticky tape (d) a magnet
24. 24.🚀 Which of these goes backward? (a) gas from the rocket (b) the swimmer (c) the balloon (d) the rowing boat
25. 25.🚀 Which of these goes backward? (a) water a swimmer pushes (b) the balloon (c) the swimmer (d) the rowing boat
26. 26.⚖️ 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
27. 27.⚖️ 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
28. 28.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) a balloon (c) a mirror (d) a magnet
29. 29.🧺 Which of these is needed for the balloon rocket? (a) a long string (b) turmeric powder (c) a magnet (d) a battery cell
30. 30.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) a long string (c) a balloon (d) vinegar
31. 31.True or false: water a swimmer pushes goes backward. (a) False (b) True
32. 32.🚀 Which of these goes forward? (a) water a swimmer pushes (b) the balloon (c) air from the balloon (d) gas from the rocket
33. 33.🎈 What is the job of the straw on the string? (a) it guides the balloon (b) it holds water (c) it makes it heavier (d) it blows air in
34. 34.⚖️ 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) distance it travels (c) how big we blow it (d) the slope of the string
35. 35.🚀 In “push back, move forward”, which way does the balloon go? (a) goes forward (b) goes backward
36. 36.True or false: water from the oars goes forward. (a) True (b) False
37. 37.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
38. 38.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a drinking straw (c) a battery cell (d) two chairs
39. 39.🧺 Do we need turmeric powder for the balloon rocket? (a) needed (b) not needed
40. 40.⚖️ 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) True (b) False

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