Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 459 · 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.🎈 Why does the balloon rocket move along the string? (a) the string pulls it (b) the straw is heavy (c) escaping air pushes it (d) a magnet pulls it
2. 2.⚖️ 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
3. 3.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a balloon (c) a battery cell (d) a drinking straw
4. 4.🚀 Which of these goes backward? (a) the rocket (b) the balloon (c) the rowing boat (d) air from the balloon
5. 5.🛟 Why should you not over-blow the balloon? (a) it can pop loudly (b) it turns into a kite (c) it gets too heavy (d) it changes colour
6. 6.🧺 Do we need a mirror for the balloon rocket? (a) not needed (b) needed
7. 7.True or false: a drinking straw is not needed for the balloon rocket. (a) True (b) False
8. 8.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we measure it (b) we keep it the same (c) we change it
9. 9.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) less friction (b) no change at all (c) more friction, less far (d) it goes faster
10. 10.🚀 Which of these goes backward? (a) the balloon (b) the rowing boat (c) water a swimmer pushes (d) the swimmer
11. 11.True or false: air from the balloon goes forward. (a) True (b) False
12. 12.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it travels less far (c) it travels farther (d) it speeds up
13. 13.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a balloon (c) a battery cell (d) a long string
14. 14.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is kept the same. (a) True (b) False
15. 15.🚀 Which of these goes forward? (a) gas from the rocket (b) water from the oars (c) water a swimmer pushes (d) the rowing boat
16. 16.⚖️ 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
17. 17.🚀 Which of these goes forward? (a) water a swimmer pushes (b) water from the oars (c) the swimmer (d) air from the balloon
18. 18.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) straight down (b) it stays still (c) forward (d) backward
19. 19.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
20. 20.True or false: vinegar is not needed for the balloon rocket. (a) False (b) True
21. 21.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a balloon (c) a magnet (d) a drinking straw
22. 22.True or false: the rocket goes backward. (a) True (b) False
23. 23.🧺 Do we need a battery cell for the balloon rocket? (a) not needed (b) needed
24. 24.True or false: yeast is not needed for the balloon rocket. (a) False (b) True
25. 25.⚖️ 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) False (b) True
26. 26.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) vinegar (b) two chairs (c) a long string (d) sticky tape
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) a magnet (b) two chairs (c) yeast (d) vinegar
29. 29.🛟 Which is a safe rule for the balloon rocket? (a) put string round a neck (b) aim it at your friend (c) keep it away from faces (d) blow it till it bursts
30. 30.True or false: two chairs is not needed for the balloon rocket. (a) False (b) True
31. 31.🚀 Which of these goes backward? (a) gas from the rocket (b) the rocket (c) the swimmer (d) the rowing boat
32. 32.⚖️ 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
33. 33.🎈 When does the balloon rocket stop? (a) when the air runs out (b) when it turns blue (c) it never stops (d) when it gets cold
34. 34.⚖️ 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
35. 35.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a mirror (b) a drinking straw (c) two chairs (d) sticky tape
36. 36.True or false: sticky tape is needed for the balloon rocket. (a) True (b) False
37. 37.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a balloon rocket (b) a fridge magnet (c) a mirror (d) a sundial
38. 38.True or false: a mirror is not needed for the balloon rocket. (a) False (b) True
39. 39.🚀 Which of these goes forward? (a) water a swimmer pushes (b) air from the balloon (c) the balloon (d) water from the oars
40. 40.🔮 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

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