Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 475 · 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 blow the balloon up only a little. What happens? (a) it goes much farther (b) it goes less far (c) it flies off the string (d) it turns into a kite
2. 2.🚀 Which of these goes forward? (a) gas from the rocket (b) air from the balloon (c) the balloon (d) water from the oars
3. 3.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) a balloon (c) two chairs (d) vinegar
4. 4.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) how big we blow it (c) the same tape
5. 5.🧺 Do we need a long string for the balloon rocket? (a) not needed (b) needed
6. 6.🧺 Do we need a mirror for the balloon rocket? (a) needed (b) not needed
7. 7.True or false: water a swimmer pushes goes forward. (a) True (b) False
8. 8.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it changes colour (c) it can pop loudly (d) it turns into a kite
9. 9.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes forward (b) goes backward
10. 10.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it travels less far (c) it speeds up (d) it travels farther
11. 11.⚖️ 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
12. 12.🚀 Which of these goes forward? (a) the rocket (b) gas from the rocket (c) water a swimmer pushes (d) air from the balloon
13. 13.🚀 In “push back, move forward”, which way does the rocket go? (a) goes forward (b) goes backward
14. 14.True or false: the rowing boat goes forward. (a) True (b) False
15. 15.True or false: air from the balloon goes backward. (a) False (b) True
16. 16.True or false: air from the balloon goes forward. (a) False (b) True
17. 17.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same string (b) the same straw (c) how big we blow it (d) distance it travels
18. 18.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a long string (c) a balloon (d) vinegar
19. 19.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we measure it (b) we change it (c) we keep it the same
20. 20.🎈 Why does the balloon rocket move along the string? (a) a magnet pulls it (b) the straw is heavy (c) escaping air pushes it (d) the string pulls it
21. 21.🧺 Do we need a battery cell for the balloon rocket? (a) not needed (b) needed
22. 22.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
23. 23.🎈 What is the job of the straw on the string? (a) it guides the balloon (b) it holds water (c) it blows air in (d) it makes it heavier
24. 24.True or false: the rocket goes backward. (a) False (b) True
25. 25.True or false: the balloon goes forward. (a) False (b) True
26. 26.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a fridge magnet (b) a mirror (c) a balloon rocket (d) a sundial
27. 27.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) put string round a neck (c) aim it at your friend (d) blow it till it bursts
28. 28.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we change it (b) we keep it the same (c) we measure it
29. 29.True or false: gas from the rocket goes forward. (a) True (b) False
30. 30.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) it goes faster (b) less friction (c) more friction, less far (d) no change at all
31. 31.🎈 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
32. 32.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) a mirror (c) a battery cell (d) a long string
33. 33.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) turmeric powder (c) a drinking straw (d) a balloon
34. 34.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is kept the same. (a) True (b) False
35. 35.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes forward (b) goes backward
36. 36.True or false: a balloon is 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 battery cell (b) a drinking straw (c) two chairs (d) sticky tape
38. 38.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is kept the same. (a) False (b) True
39. 39.True or false: the rowing boat goes backward. (a) False (b) True
40. 40.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) two chairs (c) vinegar (d) a battery cell

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