Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 788 · 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.True or false: the balloon goes forward. (a) True (b) False
2. 2.🧺 Do we need a magnet for the balloon rocket? (a) not needed (b) needed
3. 3.🚀 Which of these goes backward? (a) water from the oars (b) the balloon (c) the swimmer (d) the rowing boat
4. 4.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it travels less far (c) it speeds up (d) it goes backward first
5. 5.🛟 Why should you not over-blow the balloon? (a) it changes colour (b) it gets too heavy (c) it turns into a kite (d) it can pop loudly
6. 6.🧺 Which of these is not needed for the balloon rocket? (a) yeast (b) a balloon (c) a long string (d) two chairs
7. 7.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is what we measure. (a) False (b) True
8. 8.⚖️ 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 keep it the same (c) we change it
9. 9.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a balloon (c) a magnet (d) a drinking straw
10. 10.🧺 Do we need a drinking straw for the balloon rocket? (a) needed (b) not needed
11. 11.🎈 When does the balloon rocket stop? (a) when it gets cold (b) when the air runs out (c) it never stops (d) when it turns blue
12. 12.🧺 Which of these is needed for the balloon rocket? (a) a long string (b) turmeric powder (c) yeast (d) a battery cell
13. 13.True or false: gas from the rocket goes forward. (a) True (b) False
14. 14.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it flies off the string (c) it goes less far (d) it turns into a kite
15. 15.True or false: a battery cell is needed for the balloon rocket. (a) True (b) False
16. 16.True or false: air from the balloon goes backward. (a) True (b) False
17. 17.⚖️ 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
18. 18.True or false: water from the oars goes backward. (a) False (b) True
19. 19.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) True (b) False
20. 20.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
21. 21.🎈 What is the job of the straw on the string? (a) it makes it heavier (b) it blows air in (c) it guides the balloon (d) it holds water
22. 22.🔮 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
23. 23.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we keep it the same (b) we measure it (c) we change it
24. 24.🧺 Do we need a mirror for the balloon rocket? (a) needed (b) not needed
25. 25.⚖️ 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) distance it travels (d) the slope of the string
26. 26.🎈 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
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.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes forward (b) goes backward
29. 29.🚀 In “push back, move forward”, which way does the balloon go? (a) goes forward (b) goes backward
30. 30.🧺 Do we need two chairs for the balloon rocket? (a) not needed (b) needed
31. 31.⚖️ 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
32. 32.True or false: a drinking straw is needed for the balloon rocket. (a) True (b) False
33. 33.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) two chairs (c) yeast (d) a long string
34. 34.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) turmeric powder (c) a drinking straw (d) a balloon
35. 35.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) vinegar (c) two chairs (d) a long string
36. 36.🚀 Which of these goes forward? (a) water from the oars (b) the rowing boat (c) water a swimmer pushes (d) gas from the rocket
37. 37.True or false: turmeric powder is needed for the balloon rocket. (a) False (b) True
38. 38.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we keep it the same (b) we measure it (c) we change it
39. 39.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a fridge magnet (b) a sundial (c) a mirror (d) a balloon rocket
40. 40.True or false: vinegar is needed for the balloon rocket. (a) False (b) True

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