Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 960 · 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.🛟 Which is a safe rule for the balloon rocket? (a) aim it at your friend (b) put string round a neck (c) keep it away from faces (d) blow it till it bursts
2. 2.🚀 Which of these goes backward? (a) the rocket (b) the balloon (c) the rowing boat (d) water a swimmer pushes
3. 3.🛟 Why should you not over-blow the balloon? (a) it changes colour (b) it can pop loudly (c) it turns into a kite (d) it gets too heavy
4. 4.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes forward (b) goes backward
5. 5.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes forward (b) goes backward
6. 6.True or false: a magnet is not needed for the balloon rocket. (a) False (b) True
7. 7.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a balloon (c) a long string (d) turmeric powder
8. 8.🧺 Do we need a long string for the balloon rocket? (a) needed (b) not needed
9. 9.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it goes backward first (c) it travels farther (d) it travels less far
10. 10.🔮 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
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.True or false: a balloon is not needed for the balloon rocket. (a) False (b) True
13. 13.True or false: sticky tape is needed for the balloon rocket. (a) False (b) True
14. 14.True or false: water from the oars goes forward. (a) True (b) False
15. 15.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) it stays still (b) backward (c) straight down (d) forward
16. 16.🚀 Which of these goes backward? (a) water from the oars (b) the swimmer (c) the balloon (d) the rocket
17. 17.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a balloon (c) vinegar (d) two chairs
18. 18.🧺 Do we need sticky tape for the balloon rocket? (a) not needed (b) needed
19. 19.🧺 Do we need a battery cell for the balloon rocket? (a) not needed (b) needed
20. 20.🔮 Predict: you blow the balloon up only a little. What happens? (a) it turns into a kite (b) it flies off the string (c) it goes much farther (d) it goes less far
21. 21.🧺 Do we need yeast for the balloon rocket? (a) needed (b) not needed
22. 22.🚀 Which of these goes forward? (a) water from the oars (b) the rocket (c) air from the balloon (d) water a swimmer pushes
23. 23.🚀 Which of these goes forward? (a) the rowing boat (b) water a swimmer pushes (c) gas from the rocket (d) water from the oars
24. 24.⚖️ 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
25. 25.True or false: the balloon goes backward. (a) True (b) False
26. 26.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a sundial (b) a mirror (c) a fridge magnet (d) a balloon rocket
27. 27.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes backward (b) goes forward
28. 28.True or false: a mirror is needed for the balloon rocket. (a) True (b) False
29. 29.🧺 Do we need a mirror for the balloon rocket? (a) needed (b) not needed
30. 30.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) distance it travels (b) the slope of the string (c) how big we blow it (d) the same string
31. 31.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is kept the same. (a) False (b) True
32. 32.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a drinking straw (c) a balloon (d) yeast
33. 33.True or false: vinegar is needed for the balloon rocket. (a) False (b) True
34. 34.🎈 What is the job of the straw on the string? (a) it makes it heavier (b) it blows air in (c) it holds water (d) it guides the balloon
35. 35.🚀 In “push back, move forward”, which way does the rocket go? (a) goes forward (b) goes backward
36. 36.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) a magnet (c) yeast (d) a balloon
37. 37.🧺 Do we need two chairs for the balloon rocket? (a) needed (b) not needed
38. 38.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
39. 39.⚖️ 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
40. 40.⚖️ 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

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